Spinel Patents (Class 502/524)
  • Patent number: 9034286
    Abstract: An exhaust system for a compression ignition engine comprising an oxidation catalyst for treating carbon monoxide (CO) and hydrocarbons (HCs) in exhaust gas from the compression ignition engine, wherein the oxidation catalyst comprises: a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component, a palladium (Pd) component and a combination thereof; an alkaline earth metal component; a support material comprising a modified alumina incorporating a heteroatom component; and a substrate, wherein the platinum group metal (PGM) component, the alkaline earth metal component and the support material are disposed on the substrate.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: May 19, 2015
    Assignee: Johnson Matthey Public Limited Company
    Inventors: David Bergeal, Andrew Francis Chiffey, John Benjamin Goodwin, Daniel Hatcher, Francois Moreau, Agnes Raj, Raj Rao Rajaram, Paul Richard Phillips, Cathal Prendergast
  • Patent number: 9034786
    Abstract: A catalyst which comprises nickel and/or cobalt supported on a support that includes a mixed oxide containing metals, such as aluminum, zirconium, lanthanum, magnesium, cerium, calcium, and yttrium. Such catalysts are useful for converting carbon dioxide to carbon monoxide, and for converting methane to hydrogen.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 19, 2015
    Assignee: Enerkem, Inc.
    Inventors: Prashant Kumar, David Lynch
  • Patent number: 8992870
    Abstract: The present invention relates to a catalyst comprising 0.1-10 mol % Co3-xMxO4, where M is Fe or Al and x=0-2, on a cerium oxide support for decomposition of N2O in gases containing NO. The catalyst may also contain 0.01-2 weight % ZrO2. The invention further comprises a method for performing a process comprising formation of N2O. The N2O containing gas is brought in contact with a catalyst comprising 0.1-10 mol % Co3-xMxO4, where M is Fe or Al and x=0-2, on a cerium oxide support, at 250-1000° C. The method may comprise that ammonia is oxidized in presence of an oxidation catalyst and that the thereby formed gas mixture is brought in contact with the catalyst comprising the cobalt component on cerium oxide support at a temperature of 500-1000° C.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: March 31, 2015
    Assignee: Yara International ASA
    Inventors: Øystein Nirisen, Klaus Schöffel, David Waller, Dag Øvrebø
  • Patent number: 8969231
    Abstract: A method of producing an alumina-supported cobalt catalyst for use in a Fischer-Tropsch synthesis reaction, which comprises: calcining an initial ?-alumina support material at a temperature to produce a modified alumina support material; impregnating the modified alumina support material with a source of cobalt; calcining the impregnated support material, activating the catalyst with a reducing gas, steam treating the activated catalyst, and activating the steam treated catalyst with a reducing gas.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: March 3, 2015
    Assignee: GTL.FI AG
    Inventors: Erling Rytter, Sigrid Eri, Rune Myrstad, Odd Asbjørn Lindvåg
  • Patent number: 8968601
    Abstract: Disclosed is a catalyst used for steam carbon dioxide reforming of natural gas, wherein an alkaline earth metal alone or an alkaline earth metal and a group 8B metal are supported on a hydrotalcite-like catalyst containing nickel, magnesium and aluminum. The disclosed catalyst is useful as a steam carbon dioxide reforming (SCR) catalyst of natural gas at high temperature and high pressure, while minimizing deactivation of the catalyst due to sintering of the active component nickel and deactivation of the catalyst due to coke generation at the same time. A synthesis gas prepared using the catalyst has a H2/CO molar ratio maintained at 1-2.2. A synthesis gas having a H2/CO molar ratio of 1.8-2.2 may be used as a raw material for Fischer-Tropsch synthesis or methanol synthesis and a synthesis gas having a H2/CO molar ratio of may be used as a raw material for dimethyl ether synthesis.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: March 3, 2015
    Assignee: Korea Institute of Science and Technology
    Inventors: Dong Ju Moon, Yun Ju Lee, Jae Sun Jung, Jin Hee Lee, Seung Hwan Lee, Bang Hee Kim, Hyun Jin Kim, Eun Hyeok Yang
  • Patent number: 8932977
    Abstract: A catalyst for the electrolysis of water molecules and hydrocarbons, the catalyst including catalytic groups comprising A1-xB2-yB?yO4 spinels having a cubical M4O4 core, wherein A is Li or Na, B and B? are independently any transition metal or main group metal, M is B, B?, or both, x is a number from 0 to 1, and y is a number from 0 to 2. In photo-electrolytic applications, a plurality of catalytic groups are supported on a conductive support substrate capable of incorporating water molecules. At least some of the catalytic groups, supported by the support substrate, are able to catalytically interact with water molecules incorporated into the support substrate. The catalyst can also be used as part of a photo-electrochemical cell for the generation of electrical energy.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: January 13, 2015
    Assignee: Rutgers, The State University of New Jersey
    Inventors: G. Charles Dismukes, Martha Greenblatt
  • Patent number: 8883118
    Abstract: A process for producing the porous catalyst body for decomposing hydrocarbons, the body containing at least magnesium, aluminum and nickel, and has a pore volume of 0.01 to 0.5 cm3/g, an average pore diameter of not more than 3006 ? and an average crushing strength of not less than 3 kgf. The process includes molding hydrotalcite containing at least magnesium, aluminum and nickel, and calcining the resulting molded product at a temperature of 700 to 1500° C.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: November 11, 2014
    Assignee: Toda Kogyo Corporation
    Inventors: Shinji Takahashi, Naoya Kobayashi
  • Patent number: 8853121
    Abstract: The effect of aging temperature on oxygen storage materials (OSM) substantially free from platinum group (PGM) and rare earth (RE) metals is disclosed. Samples of ZPGM-ZRE metals OSM, hydrothermally aged at a plurality of high temperatures are found to have significantly high oxygen storage capacity (OSC) and phase stability than conventional PGM catalysts with Ce-based OSM. ZPGM-ZRE metals OSM includes a formulation of Cu—Mn stoichiometric spinel structure deposited on Nb—Zr oxide support and may be converted into powder to be used as OSM application or coated onto catalyst substrate. ZPGM-ZRE metals OSM, after aging condition, presents enhanced level of thermal stability and OSC property which shows improved catalytic activity than conventional PGM catalysts including Ce-based OSM. ZPGM-ZRE metals OSM may be suitable for a vast number of applications, and more particularly in underfloor catalyst systems.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: October 7, 2014
    Assignee: Clean Diesel Technology Inc.
    Inventors: Zahra Nazarpoor, Stephen J. Golden
  • Patent number: 8853123
    Abstract: Disclosed is a lean NOx trap (LNT) catalyst with enhanced NOx storage capacity at low temperature. More particularly, an LNT catalyst with enhanced NOx storage capacity at low temperature and significantly inhibited thermal desorption is prepared by coating a washcoat on a honeycomb-type carrier and drying and baking the same. The washcoat contains a first catalyst powder in which barium (Ba) and a precious metal are supported on a ceria support, and a second catalyst powder in which a precious metal is supported on a magnesium (Mg)-substituted alumina support The LNT catalyst of the present invention is useful as a NOx reducing catalyst for a passenger diesel vehicle.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: October 7, 2014
    Assignee: Hyundai Motor Company
    Inventor: Chang Ho Jung
  • Patent number: 8834835
    Abstract: A catalytic water gas shift process at temperatures above about 450° C. up to about 900° C. or so wherein the catalyst includes rhenium deposited on a support, preferably without a precious metal, wherein the support is prepared from a high surface area material, such as a mixed metal oxide, particularly a mixture of zirconia and ceria, to which may be added one or more of a high surface area transitional alumina, an alkali or alkaline earth metal dopant and/or an additional dopant selected from Ga, Nd, Pr, W, Ge, Fe, oxides thereof and mixtures thereof.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: September 16, 2014
    Assignees: Clariant Corporation, L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
    Inventors: Jon P. Wagner, Michael W. Balakos, Chandra Ratnasamy
  • Patent number: 8633130
    Abstract: The invention relates to chemical compositions that can be used for hydrocarbon catalytic cracking processes with vanadium as a contaminant, including an active phase formed by different pyrophosphates M2P2O7 (M=Ba or Ca) supported on a mixture of magnesium and aluminum oxide, preferably magnesium aluminate in the spinel phase. The composition captures the metals originating from the charge, particularly vanadium, and thus protects the catalyst. Said composition is preferably used in the form of a separated particle in order to the control the addition thereof to the unit according to the metal content of the charge. The invention also relates to the method for preparing said composition, including synthesis of pyrophosphates, formation of a suspension of boehmite alumina, magnesium oxide or magnesium hydroxide, together with oxides M2P2O7, spray drying and calcination of the microspheres without generating any loss in the crystalline structure of oxides M2P2O7.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: January 21, 2014
    Assignee: Ecopetrol S.A.
    Inventors: Luis Oswaldo Almanza Rubiano, Luis Javier Hoyos Marin, Cesar Augusto Vergel Hernández
  • Patent number: 8614164
    Abstract: Iron- and copper-containing heterogeneous catalyst, and a process for producing it, including the following steps: thermal decomposition of gaseous iron pentacarbonyl to give carbonyl iron powder having spherical primary particles; treatment of carbonyl iron powder with hydrogen, resulting in the metallic spherical primary particles at least partly agglomerating; surface oxidation of the iron particles to form iron oxide; contacting the particles with an aqueous solution of a copper compound; drying in the presence of oxygen and subsequent calcination in the absence of oxygen, resulting in oxygen-comprising copper compounds on the particles; and finally reaction of these with the iron oxide to form a mixed oxide of the formula CuxFe3-xO4, where 0<x?1. Process for preparing olefins by reacting carbon monoxide with hydrogen in the presence of a catalyst, wherein the abovementioned iron- and copper-comprising heterogeneous catalyst is used as catalyst.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: December 24, 2013
    Assignee: BASF SE
    Inventors: Jochen Steiner, Kerem Bay, Vera Werner, Jürgen Amann, Stefan Bunzel, Claudia Moβbacher, Joachim Müller, Ekkehard Schwab, Markus Weber
  • Patent number: 8613899
    Abstract: An apparatus includes a manifold with a chamber for mixing multiple reactants. Gases are jetted into the manifold by a plurality of inlet injectors. The inlet injectors are arranged such that the gases passing into the manifold impinge on each other at a common point to form a mixture. The mixture passes through a plurality of holes in one side of the manifold into a deposition chamber where the mixture of gases impinges on additional gases at a common point to provide a reaction resulting in deposition of solid materials in the deposition chamber. The solid materials are free-standing.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: December 24, 2013
    Assignees: Rohm and Haas Electronic Materials LLC, Dow Global Technologies LLC
    Inventors: Heather A. G. Stern, Vincent DiFilippo, Jitendra S. Goela, Michael A. Pickering, Hua Bai, Debashis Chakraborty, Hangyao Wang
  • Patent number: 8486368
    Abstract: A process for producing the porous catalyst body for decomposing hydrocarbons, the body containing at least magnesium, aluminum and nickel, and has a pore volume of 0.01 to 0.5 cm3/g, an average pore diameter of not more than 300 ? and an average crushing strength of not less than 3 kgf. The process includes molding hydrotalcite containing at least magnesium, aluminum and nickel, and calcining the resulting molded product at a temperature of 700 to 1500° C.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: July 16, 2013
    Assignee: Toda Kogyo Corporation
    Inventors: Shinji Takahashi, Naoya Kobayashi
  • Patent number: 8481451
    Abstract: The present invention relates to a catalyst for hydrocarbon steam cracking, a method of preparing the same, and a method of preparing olefin by the hydrocarbon steam cracking by using the catalyst, and more specifically, to a catalyst for hydrocarbon steam cracking for preparing light olefin including an oxide catalyst (0.5?j?120, 1?k?50, A is transition metal, and x is a number corresponding to the atomic values of Cr, Zr, and A and values of j and k) represented by CrZrjAkOx, wherein the composite catalyst is a type that has an outer radius r2 of 0.5R to 0.96R (where R is a radius of a cracking reaction tube), a thickness (t; r2?r1) of 2 to 6 mm, and a length h of 0.5r2 to 10r2, a method of preparing the same, and a method of preparing light olefins by using the same.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: July 9, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Jun-Han Kang, Jonghun Song, Junseon Choi
  • Patent number: 8361925
    Abstract: The exhaust gas-purifying catalyst includes at least one of a first composite oxide represented by a formula A(Al2-xBx)O4 and a second composite oxide represented by a formula (Al2-yCy)O3, wherein element A is a divalent transition metal other than platinum-group elements, each of elements B and C is a transition metal other than platinum-group elements, x satisfies 0<x<2, and y satisfies 0<y<2.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: January 29, 2013
    Assignees: Cataler Corporation, Daihatsu Motor Co., Ltd.
    Inventors: Satoshi Matsueda, Mareo Kimura, Hiroto Yoshida, Keiichi Narita, Hirohisa Tanaka, Mari Uenisha, Masashi Taniguchi
  • Patent number: 8304367
    Abstract: The present invention aims at providing a catalyst as a porous catalyst body for decomposing hydrocarbons which comprises at least magnesium, aluminum and nickel, wherein the catalyst has an excellent catalytic activity for decomposition and removal of hydrocarbons, an excellent anti-sulfur poisoning property, an excellent anti-coking property even under a low-steam condition, a sufficient strength capable of withstanding crushing and breakage even when coking occurs within the catalyst, and an excellent durability.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: November 6, 2012
    Assignee: Toda Kogyo Corporation
    Inventors: Shinji Takahashi, Naoya Kobayashi
  • Patent number: 8143186
    Abstract: A catalyst composition comprising cobalt as an active catalytic element and a lesser amount of nickel as a promoter supported on a metal oxide support. The support may comprise alumina, silica, silica-alumina, zeolite, zirconia, magnesia or titania. The amount of nickel is preferably less than 50 wt %, relative to the amount of cobalt.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: March 27, 2012
    Assignees: Statoil ASA, Petro SA
    Inventor: Erling Rytter
  • Patent number: 8119554
    Abstract: Shaped bodies having catalytic properties which can be obtained by a process comprising the steps: a) production of a shaped body by means of a powder-based rapid prototyping process, b) if appropriate, a heat treatment of the shaped body, c) if appropriate, application of at least one catalytically active component to the shaped body, d) if appropriate, a further heat treatment, where steps b), c) and/or d) can be carried out a number of times, are used as reactor internals in heterogeneously catalyzed chemical reactions.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: February 21, 2012
    Assignee: BASF SE
    Inventors: Nawid Kashani-Shirazi, Veronika Wloka, Wolfgang Gerlinger, Andrea Schmidt, Kerstin Heinen, Wolfgang Kollenberg
  • Patent number: 8119558
    Abstract: A water gas shift catalyst for use at temperatures above about 450° C. up to about 900° C. or so comprising rhenium deposited on a support, preferably without a precious metal, wherein the support is prepared from a high surface area material, such as a mixed metal oxide, particularly a mixture of zirconia and ceria, to which may be added one or more of a high surface area transitional alumina, an alkali or alkaline earth metal dopant and/or an additional dopant selected from Ga, Nd, Pr, W, Ge, Fe, oxides thereof and mixtures thereof.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: February 21, 2012
    Assignees: Süd-Chemie Inc., L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jon P. Wagner, Michael W. Balakos, Chandra Ratnasamy
  • Patent number: 8071655
    Abstract: A catalyst applicable to the synthesis gas conversions especially E-T slurry processes, said catalyst comprising: a) a support containing at least a first aluminate element of mixed spinel structure of formula MxM?(1?x)Al2O4/Al2O3.SiO2, x ranging between and excluding 0 and 1, or of simple spinel structure of formula MAl2O4/Al2O3.SiO2, said support being calcined in an at least partly oxidizing atmosphere, at a temperature ranging between 850° C. and 900° C., and b) an active phase deposited on said support, which contains one or more group VIII metals, selected from among cobalt, nickel, ruthenium or iron. Said catalyst is used in a fixed bed or suspended in a three-phase reactor for hydrocarbon synthesis from a CO, H2 mixture.
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: December 6, 2011
    Assignees: IFP Energies Nouvelles, ENI S.p.A.
    Inventors: Fabrice Diehl, François Hugues, Marie-Claire Marion, Denis Uzio
  • Patent number: 8034738
    Abstract: It is intended to highly efficiently produce a high-density brush-shaped carbon nanostructure useful in the production of CNT assembly, such as rope-shaped CNTs, and provide a catalyst body for production of brush-shaped carbon nanostructure that enables the production. The catalyst body for production of brush-shaped carbon nanostructure is one comprising a substrate (32), an aggregation suppressive layer (34) superimposed on a surface thereof and a catalyst layer superimposed on the aggregation suppressive layer (34). The catalyst layer is a catalyst particle layer (44) consisting of metallic catalyst particles (42) composed mainly of a catalytic metal. The metallic catalyst particles (42) have an average particle diameter, D, satisfying the relationship 0.5 nm?D?80 nm, and individual particles of the metallic catalyst particles (42) have a diameter, d, falling within the range of the above average particle diameter (D).
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: October 11, 2011
    Assignee: Taiyo Nippon Sanso Corporation
    Inventors: Yoshikazu Nakayama, Toru Sakai, Takeshi Nagasaka
  • Patent number: 8017545
    Abstract: The present invention relates to a method of making a chemical compound comprising nickel, aluminum, oxygen and sulfur having a general formula Ni2xAl2O2x+3?zSz, wherein 0.5?x?3 and 0?z?2x. The material is effective for the removal of S-compounds from gaseous streams, effective for catalyzing a water gas shift reaction and suppresses the formation of carbon monoxide and hydrogen under conditions where a water gas shift reaction is catalyzed.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: September 13, 2011
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Manuela Serban, Kurt M. Vanden Bussche, Lisa M. King
  • Patent number: 7754650
    Abstract: The present invention relates to a trifunctional catalyst used in catalytic cracking device in petroleum refining industry and a method for preparing the same. The trifunctional catalyst of the invention comprises absorbent, cerium dioxide and vanadium pentoxide acting as oxidative catalyst and cerium oxyfluoride acting as structural promoter. The oxidative catalyst and structural promoter are dispersed over the absorbent. The absorbent is spinel-based composite oxides having a general formula of MgAl2-xFexO4.yMgO, where the x is 0.01-0.5 and y is 0.2-1.2. In the trifunctional catalyst, the raw material for forming the chemical compound containing rare-earth cerium is hamartite powder. The method for preparing the trifunctional catalyst of the invention is shown as follows: the components relating to the preparation of the finished product are dissolved or dispersed into liquid materials; then the trifunctional catalyst is obtained after the mixing, drying and calcining of such liquid materials.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: July 13, 2010
    Assignee: Beijing SJ Environmental Protection and New Material Co., Ltd.
    Inventors: Zhenyi Liu, Xiaowei Li, Hua Chen, Youcheng Liu
  • Patent number: 7700519
    Abstract: The present invention relates to a catalyst comprising 0.1-10 mol % Co3-xMxO4, where M is Fe or Al and x=0-2, on a cerium oxide support for decomposition of N2O in gases containing NO. The catalyst may also contain 0.01-2 weight % ZrO2. The invention further comprises a method for performing a process comprising formation of N2O. The N2O containing gas is brought in contact with a catalyst comprising 0.1-10 mol % CO3-xMxO4, where M is Fe or Al and x=0-2, on a cerium oxide support, at 250-1000° C. The method may comprise that ammonia is oxidized in presence of an oxidation catalyst and that the thereby formed gas mixture is brought in contact with the catalyst comprising the cobalt component on cerium oxide support at a temperature of 500-1000° C.
    Type: Grant
    Filed: July 4, 2001
    Date of Patent: April 20, 2010
    Assignee: Yara International ASA
    Inventors: Øystein Nirisen, Klaus Schöffel, David Waller, Dag Øvrebø
  • Patent number: 7700816
    Abstract: An oxygenate conversion catalyst useful in the conversion of oxygenates such as methanol to olefinic products may be improved by the use of a catalyst combination based on a molecular sieve in combination with a co-catalyst comprising a mixed metal oxide composition which has oxidation/reduction functionality under the conditions of the conversion. This metal oxide co-catalyst component will comprise a mixed oxide of one or more, preferably at least two, transition metals, usually of Series 4, 5 or 6 of the Periodic Table, with the metals of Series 4 being preferred, as an essential component of the mixed oxide composition. The preferred transition metals are those of Groups 5, especially titanium and vanadium, Group 6, especially chromium or molybdenum, Group 7, especially manganese and Group 8, especially cobalt or nickel. Other metal oxides may also be present.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: April 20, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Teng Xu, Tan-Jen Chen, Neeraj Sangar, John Di Yi Ou
  • Patent number: 7438887
    Abstract: Nanowires, films, and membranes comprising ordered porous manganese oxide-based octahedral molecular sieves, and methods of making, are disclosed. A single crystal ultra-long nanowire includes an ordered porous manganese oxide-based octahedral molecular sieve, and has an average length greater than about 10 micrometers and an average diameter of about 5 nanometers to about 100 nanometers. A film comprises a microporous network comprising a plurality of single crystal nanowires in the form of a layer, wherein a plurality of layers is stacked on a surface of a substrate, wherein the nanowires of each layer are substantially axially aligned. A free standing membrane comprises a microporous network comprising a plurality of single crystal nanowires in the form of a layer, wherein a plurality of layers is aggregately stacked, and wherein the nanowires of each layer are substantially axially aligned.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: October 21, 2008
    Assignee: The University of Connecticut
    Inventors: Steven Lawrence Suib, Jikang Yuan
  • Patent number: 7427580
    Abstract: A method is described for producing a high temperature shift catalyst, not requiring a reduction step prior to use, by precipitating a composition containing divalent and trivalent iron compounds and a modifier metal selected from trivalent chromium and/or manganese compounds from an aqueous solution containing iron and modifier metal salts with a base, and forming the resultant precipitate into shaped catalyst units, without exposing said precipitate to an oxidizing atmosphere at temperatures above 200° C.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: September 23, 2008
    Assignee: Johnson Matthey PLC
    Inventors: Andrew Mark Ward, Sean Alexander Axon, Paul John Murray
  • Patent number: 7351382
    Abstract: The present invention is directed to a particle filter to remove soot from the exhaust gas of a diesel engine. The particle filter contains a catalytically active coating on a filter body to accelerate bum-off during a regeneration phase of the soot particles collected on the filter. The particle filter comprises a catalytic coating containing compounds of barium, compounds of magnesium, and at least one element of the platinum group metals. The invention is further directed to a process for accelerated combustion of soot particles collected on the filter from lean exhaust gas of a diesel engine in which the soot particles have a soot ignition temperature and the particle filter is actively regenerated from time to time by raising the temperature of the particle filter above the soot ignition temperature and burning off the soot particles.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: April 1, 2008
    Assignee: Umicore AG & Co. KG
    Inventors: Marcus Pfeifer, Barry van Stetten, Christian Kühn, Roger Staab, Lutz Marc Ruwisch, Peter Kattwinkel, Jürgen Geishoff, Egbert Lox, Thomas Kreuzer
  • Patent number: 7259124
    Abstract: The present invention discloses a hydrogen storage medium including a composite of an alloy and a catalyst/expandable graphite. The expandable graphite can be replaced by activated carbon. The catalyst content is 1-50% based on the weight of the medium, which can be Pd, Pt, Cu, Co or Ni. The alloy can be a Mg-based alloy, Ti-based alloy, La-based alloy, Mn-based alloy or Fe-based alloy. The present invention also discloses a process for preparing a hydrogen storage composite.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: August 21, 2007
    Assignee: Industrial Technology Research Institiute
    Inventors: Pei-Shan Yen, Ching-Sung Hsiao, Kong-Wei Cheng, Jau-Chyn Huang
  • Patent number: 7247598
    Abstract: This invention describes a nano-scale magnetic solid base catalyst and its preparation method. The catalyst involves a magnetic core coated with a solid base active layer. The synthesis of the nano-scale magnetic cores was first carried out using a rapid nucleation method in a colloid mill reactor using a liquid-liquid reaction. The nano-scale magnetic cores were mixed with a mixed salt solution. The LDH-containing magnetic cores were prepared in a colloid mill reactor by a rapid nucleation method, and subsequently calcined to give a solid base mixed oxides coated on magnetic cores. The characteristics of this catalyst are: nano-scale, high surface area and high activity and selectivity in base-catalyzed reactions. The highly dispersed catalyst can be easily reclaimed using an external magnetic field because of its magnetism. The catalyst can be utilized in base catalysis in organic reactions such as glycol ether synthesis, ester exchange, aldol condensation, etc.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: July 24, 2007
    Assignee: Beijing University of Chemical Technology
    Inventors: Xue Duan, Hui Zhang, Rong Qi
  • Patent number: 7183236
    Abstract: An object of the present invention is to realize low pressure loss and high purification performance in a constitution in which a primary catalyst component and co-catalyst component are loaded onto a ceramic support that allows catalyst components to be loaded directly. According to the present invention, a primary catalyst component in the form of a catalyst precious metal and a co-catalyst component in the form of an oxygen occluding component are loaded on the surface of a honeycomb-shaped ceramic support, including the inner surfaces of pores. As a result of the large loaded amount of co-catalyst component entering inside the pores, the loaded amount of co-catalyst component on the cell wall surfaces is reduced, thereby making it possible to inhibit increases in pressure loss. In addition, since the primary catalyst component and co-catalyst component are in close proximity to each other, catalyst performance is improved.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: February 27, 2007
    Assignee: Denso Corporation
    Inventors: Tomomi Hase, Tomohiko Nakanishi, Hideaki Ueno, Takatoshi Shinyoshi
  • Patent number: 6696389
    Abstract: The invention relates to a method and a device for cleaning flowing gases. To reduce the total emissions, nitrogen oxides, especially NO and NOx, are extracted at least partially from the gas to be scrubbed, in the temperature range from 50 and 300° C., preferably between 50 and 150° C. To extract the nitrogen oxides, an intermediate storage medium is used that is composed of a storage material and a supporting material for the storage material. The intermediate storage medium having in particular a composition of the formal chemical formula Ag.CuAl2O4 in an Al2O3 matrix, with the composition being a spinel or being of the spinel type, and with the composition having characteristic spinel lines in the x-ray spectrum, where 0≦x<1.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: February 24, 2004
    Assignee: DaimlerChrysler AG
    Inventors: Walter Boegner, Rolf-Dirc Roitzheim, Martin Hartweg, Andrea Seibold, Thomas Fetzer, Bernd Morsbach
  • Patent number: 6641626
    Abstract: The invention relates to mixed phase materials for the preparation of catalytic membranes which exhibit ionic and electronic conduction and which exhibit improved mechanical strength compared to single phase ionic and electronic conducting materials. The mixed phase materials are useful for forming gas impermeable membranes either as dense ceramic membranes or as dense thin films coated onto porous substrates. The membranes and materials of this invention are useful in catalytic membrane reactors in a variety of applications including synthesis gas production. One or more crystalline second phases are present in the mixed phase material at a level sufficient to enhance the mechanical strength of the mixture to provide membranes for practical application in CMRs.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: November 4, 2003
    Assignee: Eltron Research, Inc.
    Inventors: Pamela Van Calcar, Richard Mackay, Anthony F. Sammells
  • Patent number: 6607704
    Abstract: An integrated lean NOx trap. The integrated lean NOx trap includes a lean NOx trap containing a composite metal oxide mixture consisting essentially of about 80-100 wt % stoichiometric spinel MgAl2O4 and between about 0-20 wt % of CeO2 or CeO2—ZrO2. A method for removing NOx and SOx impurities from exhaust gases using the integrated lean NOx trap is also described.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: August 19, 2003
    Assignee: Ford Global Technologies, LLC
    Inventors: Diane L. Guttridge, Jun (John) Li, Mohinder Singh Chattha, Robert J. Kudla, William Lewis Henderson Watkins
  • Patent number: 6607678
    Abstract: The present invention provides a method of steam reforming a hydrocarbon over a spinel-containing catalyst at short residence times or short contact times. The present invention also provides spinel-containing catalysts. Surprisingly superior results and properties obtained in methods and catalysts of the present invention are also described.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: August 19, 2003
    Assignee: Battelle Memorial Institute
    Inventors: Yong Wang, Anna Lee Y. Tonkovich, David P. Vanderwiel
  • Publication number: 20030040432
    Abstract: A ceramic support element for a NOx trap which includes a NOx storage component comprising an alkali metal, the ceramic support having a composition lying within a ternary system selected from the group consisting of Al2TiO5—MgTi2O5—MgAl2O4 and Al2TiO5—FeTiO5—Al2O3, a coefficient of thermal expansion (22-800° C.) of less than 20×10−7/° C. and a modulus of rupture as measured on a solid rod of circular cross section of greater than 1000 pounds per square inch.
    Type: Application
    Filed: August 15, 2001
    Publication date: February 27, 2003
    Inventors: Douglas M. Beall, Shahid G. Lakhwani
  • Patent number: 6524996
    Abstract: The spinel monolith catalyst is obtainable by a) preparing or coating a molding, especially a monolith, with an at least surfacial active composition comprising a spinel of the general formula (I) AxB(1−x)E2O4  (I)  where A is Cu, of which up to half may be replaced by Co, Fe, Ni, Mn or Cr, B is at least one element selected from the group consisting of Zn, Mg, Ca, Zr, Ce, Sn, Ti, V, Mo and W, E is Al, of which up to half may be replaced by Fe2O3, Cr2O3, Ga2O3, La2O3 or mixtures thereof, x is from 0 to 1, preferably 0 to 0.9, b) impregnating the monolith with a solution of at least one compound of elements of transition group 5 of the periodic table or adding these elements in step a) in the form of their oxides or salts, c) drying and optionally calcining.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: February 25, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Bender, Otto Kumberger, Michael Hesse
  • Patent number: 6416731
    Abstract: Process for catalytic steam reforming of a carbonaceous feedstock with improved resistance to sulphur poisoning and sintering characterized by contacting the feedstock with a nickel catalyst supported on magnesium aluminum spinel, MgO·xAl2O3, wherein the spinel support has a specific surface area Asp[m2/g] higher than 400·exp(−Tc/400° C.) obtained by calcination at a temperature Tc[° C.].
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: July 9, 2002
    Assignee: Haldor Topsoe A/S
    Inventors: Jesper Dohrup, Claus J. H. Jacobsen, Christian Olsen
  • Patent number: 6395244
    Abstract: A storage catalyst includes (1) a component that has a catalytic reducing action for nitrogen oxides at least in the presence of hydrocarbons, and (2) a component that stores NOx at least at temperatures of below 100° C. The catalytically active component is of the general chemical formula AaBbO4, where A is one or more divalent metals and B is one or more trivalent metals, and where a+b≦3 and a, b>0. The reaction enthalpy or the chemical activity between the catalytically active component and the NOx-storing component is low at least up to temperatures of 600° C.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: May 28, 2002
    Assignees: DaimlerChrysler AG, BASF Aktiengesellschaft
    Inventors: Martin Hartweg, Thomas Fetzer, Bernd Morsbach, Otto Kumberger
  • Patent number: 6372688
    Abstract: A catalyst for purifying an exhaust gas includes a composite oxide support and a platinum structural layer. The composite oxide support has a spinel structure expressed by M.Al2O4 in which M is an alkaline-earth metal. The platinum structural layer is formed on a surface of the composite oxide support and includes a matrix composed mainly of an alkaline-earth metal oxide in which platinum clusters are dispersed uniformly. A composite oxide layer can be interposed between the composite oxide support and the platinum structural layer. Also disclosed is an optimum process for producing the catalyst.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: April 16, 2002
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kouichi Yamashita, Shinji Tsuji
  • Patent number: 6369000
    Abstract: A process of making a metal aluminate catalyst support by incorporating, preferably impregnating, alumina, preferably gamma alumina, with a metal component to thereby provide a metal-incorporated alumina which is then calcined under a calcining condition to thereby provide a metal aluminate catalyst support. Such calcining condition includes a temperature in the range of from about 600° C. to about 1350° C. Preferably the metal component has been melted under a melting condition to thereby provide a melted metal component.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: April 9, 2002
    Assignee: Phillips Petroleum Company
    Inventors: Marvin M. Johnson, Tin-Tack Peter Cheung, Darin B. Tiedtke
  • Publication number: 20010032965
    Abstract: The present invention provides a method of steam reforming a hydrocarbon over a spinel-containing catalyst at short residence times or short contact times. The present invention also provides spinel-containing catalysts. Surprisingly superior results and properties obtained in methods and catalysts of the present invention are also described.
    Type: Application
    Filed: February 16, 2001
    Publication date: October 25, 2001
    Inventors: Young Wang, Anna Lee Y. Tonkovich, David P. Vanderwiel
  • Patent number: 6218335
    Abstract: A porous spinel type oxide shows a large surface area and a uniform micro-porous structure. The oxide is expressed by general formula MO—Al2O3 and shows a surface area per unit weight of not less than 80 m2/g. Such a porous spinel type compound oxide is obtained by impregnating a specific &ggr;-alumina carrier with a solution of a compound of metal element M capable of taking a valence of 2, drying the impregnated carrier and calcining it at a temperature of 600° C. or higher. The specific &ggr;-alumina carrier shows a surface area per unit weight of not less than 150 m2/g, a micro-pore volume per unit weight of not less than 0.55 cm3/g and an average micro-pore diameter between 90 and 200 angstroms. The micro-pores with a diameter between 90 and 200 angstroms occupy not less than 60% of the total micro-pore volume of the carrier.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: April 17, 2001
    Assignee: Chiyoda Corporation
    Inventors: Yoshimi Okada, Kenichi Imagawa, Susumu Yamamoto
  • Patent number: 6172000
    Abstract: The invention is a method for treating diesel exhaust gases, i.e., in an oxidizing atmosphere, with a catalyst which has a broadened operating temperature window at higher temperatures. It is a mixture of particles comprising platinum/alumina and a bi-metal oxide of manganese and zirconium.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: January 9, 2001
    Assignee: Ford Global Technologies, Inc.
    Inventors: Mohinder S. Chattha, Robert J. Kudia
  • Patent number: 6165932
    Abstract: The invention is a sol-gel processed metal-aluminum based oxide material useful as a catalyst including a NOx trapping catalyst. It is made from alkoxides comprising heterometallic alkoxides. The metal is transition metal, one or both of alkali metal and alkaline earth metal, and optionally also a lanthanide. Then invention is also a method of treating lean-burn internal combustion engine exhaust gas with this material, without any precious metal included with the material, in the exhaust gas system. The method comprises locating the NOx trap in the system where the NOx trap absorbs nitrogen oxides during lean cycle operation and desorbs the nitrogen oxides when the concentration of the oxygen in the exhaust gas is lowered as during a rich or stoichiometric cycle.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: December 26, 2000
    Assignee: Ford Global Technologies, Inc.
    Inventor: Chaitanya Kumar Narula
  • Patent number: 6153162
    Abstract: A process for the catalytic reduction of NO.sub.x, the reduction taking place in the presence of a catalyst which comprises(a) from 20 to 97 wt % of A.sub.2 O.sub.3,(b) from 1 to 40 wt % of CuO,(c) from 1 to 50 wt % of ZnO,(d) from 1 to 40 wt % of Ag,(e) from 0 to 2 wt % of Pt,(f) from 0 to 20 wt % of oxides of rare earth metals, elements of the 3rd subgroup of the Periodic Table of the Elements or mixtures thereof,based on the total weight of the components (a) to (e), which adds up to 100 wt %, wherein, in each case, up to half the weight of the component (a) may be replaced by Fe.sub.2 O.sub.3, Cr.sub.2 O.sub.3, Ga.sub.2 O.sub.3 or mixtures thereof, of the component (b) by CoO, of the component (c) by MgO, of the component (d) by Au and of the component (e) by Pd, Ru, Os, Ir, Rh, Re or mixtures thereof, is used for reducing NO.sub.x, especially in combustion off-gases, the components (a), (b) and (c) forming a spinel which is doped with the components (d), (e) and (f).
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: November 28, 2000
    Assignees: BASF Aktiengesellschaft, Daimler Benz Aktiengesellschaft
    Inventors: Thomas Fetzer, Bernd Morsbach, Otto Kumberger, Martin Hartweg, Rolf-Dirc Roitzheim, Andrea Seibold, Leonhard Walz
  • Patent number: 6153161
    Abstract: NO.sub.x, where x is 1 and 2, in exhaust gases is reduced over heterogeneous catalysts with hydrocarbons, carbon monoxide, hydrogen or mixtures thereof in the presence of oxygen from 100 to 650.degree. C. and an absolute pressure of from 0.5 to 50 bar by a process in which the heterogeneous catalysts used are bimodal or polymodal compounds of the general formula IA.sub.1-x M.sub.2 O.sub.4 (I),which, if required, are doped with rare earth metals, noble metal, titanium, vanadium, molybdenum, tungsten or mixtures thereof, and whereA is magnesium, calcium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tin or mixtures thereof,M is aluminum, gallium, indium, tin, chromium, manganese, iron, cobalt, nickel, copper, zinc or mixtures thereof andx is from 0 to 0.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: November 28, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Fetzer, Bernd Morsbach, Martin Hartweg, Ralf-Dirc Roitzheim, Andrea Seibold, Leonhard Walz
  • Patent number: 6153555
    Abstract: This invention is a single phase metal alumina material made by sol-gel techniques from certain heterometallic alkoxides which include aluminum and at least alkali metals, and optionally alkaline earth metals and lanthanide.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: November 28, 2000
    Assignee: Ford Global Technologies, Inc.
    Inventors: Chaitanya Kumar Narula, Sabine Rita Nakouzi-Phillips
  • Patent number: 6107239
    Abstract: The present invention discloses an exhaust gas catalyst for reducing the pollutant release containing in the exhaust gas. The catalyst includes a primary-core support carrier composed of gamma-phase aluminum oxide. The core-carrier is coated with Y.sub.2 O.sub.3 and ZrO.sub.2 such that the heat resistance is greatly improved. A two-layer active catalytic structure is formed over the core-carrier. An inner catalytic layer is formed with composition active catalytic elements with approximate weight ratios of La:Ce:Mn:Co:Pd:=10-15:10-15:6-10:6-10:0.1-0.3. An outer catalytic layer is then coated over the inner catalytic layer. The outer catalytic layer comprises catalytic active elements. The weight ratio of the active catalytic elements are Y:La:Zr:Cu:Cr:V:Pd:=1-3:2-6:2-6:6-10:10-15:2-6:0.1-0.3.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: August 22, 2000
    Assignee: LuChuang Environment Protection Science Co. Ltd.
    Inventors: Jianwu Qin, Pengming Jiang