Patents Examined by Christina Ildebrando
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Patent number: 6710004Abstract: This invention relates to a process for the preparation of anionic clay and boehmite-containing compositions. These compositions may also contain unreacted trivalent metal source and/or divalent metal source. The process involves subjecting a precursor mixture comprising a divalent metal source and a trivalent metal source to at least two aging steps, wherein at least once between two aging steps an aluminum source is added. An advantage of the invention is that the crystallinity of the boehmite in the composition can be tuned.Type: GrantFiled: February 7, 2002Date of Patent: March 23, 2004Assignee: Akzo Nobel nvInventors: Dennis Stamires, William Jones, Paul O'Connor
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Patent number: 6706902Abstract: The present invention relates to the continuous production of nano-scale precious metal particles on SiH-containing support materials, the compositions themselves, and the use of these precious metal-containing compositions as catalyst. The continuous process according to the invention includes impregnating support materials and, after thermal activation, drying the support materials by spraying or by fluidized bed technology leads to form precious metal-containing support compositions that are active in the catalysis of oxidation reactions. The catalytically active precious metal-containing support compositions exhibit high selectivities and productivities and have very long catalyst service lives without deactivation. The invention also relates to a process for the oxidation of hydrocarbons in the presence of oxygen, a reducing agent and the precious-metal containing support compositions of the present invention.Type: GrantFiled: February 12, 2002Date of Patent: March 16, 2004Assignee: Bayer AktiengesellschaftInventors: Martin Stürmann, Markus Weisbeck, Gerhard Wegener, Frank Zbrozek
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Patent number: 6699811Abstract: There is provided a zeolite bound zeolite catalyst which does not contain significant amount of non-zeolitic binder and can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises core crystals containing first crystals of a first zeolite and optionally second crystals of a second zeolite having a composition, structure type, or both that is different from said first zeolite and binder crystals containing third crystals of a third zeolite and optionally fourth crystals of a fourth zeolite having a composition, structure type, or both that is different from said third zeolite. If the core crystals do not contain the second crystals of the second zeolite, then the binder crystals must contain the fourth crystals of the fourth zeolite. The zeolite bound zeolite finds application in hydrocarbon conversion processes, e.g.Type: GrantFiled: May 5, 2000Date of Patent: March 2, 2004Assignee: Exxon Mobil Chemical Patents Inc.Inventors: Gary David Mohr, Kenneth Ray Clem, Wilfried Jozef Mortier, Machteld Maria Mertens, Xiaobing Feng, Marc H. Anthonis, Bart Schoofs
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Patent number: 6699812Abstract: Epoxidation catalyst based on titanium zeolite in the form of extruded granules. Use of this catalyst in the synthesis of epoxides, preferably 1,2-epoxy-3-chloropropane or 1,2-epoxypropane, by reacting an olefinic compound, preferably allyl chloride or propylene, with a peroxide compound, preferably hydrogen peroxide. Process for the preparation of an epoxide, preferably 1,2-epoxy-3-chloropropane or 1,2-epoxypropane, by reacting an olefinic compound, preferably allyl chloride or propylene, with a peroxide compound, preferably hydrogen peroxide, in the presence of the aforementioned catalyst.Type: GrantFiled: January 25, 2002Date of Patent: March 2, 2004Assignee: Solvay SAInventors: Michel Strebelle, Jean-Pierre Catinat
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Patent number: 6696389Abstract: 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: GrantFiled: September 9, 1999Date of Patent: February 24, 2004Assignee: DaimlerChrysler AGInventors: Walter Boegner, Rolf-Dirc Roitzheim, Martin Hartweg, Andrea Seibold, Thomas Fetzer, Bernd Morsbach
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Patent number: 6696378Abstract: An in situ process for making improved zeolitic fluid cracking catalysts by spray drying a mixture of (i) hydrous kaolin and/or metakaolin, and (ii) calcined aluminum source, said calcined aluminum source being derived from a pulverized, ultrafine kaolin, calcining the resulting microspheres to convert hydrous kaolin to metakaolin, and reacting microspheres composed of a mixture of metakaolin and calcined aluminum source with an alkaline sodium silicate solution. The weight percent of metakaolin in the calcined microspheres is greater than the calcined aluminum source content.Type: GrantFiled: August 31, 2001Date of Patent: February 24, 2004Assignee: Engelhard CorporationInventors: Clark W. Gibson, Mitchell J. Willis, George E. Gantt, Robert E. Barnes, David M. Stockwell
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Patent number: 6693057Abstract: A low temperature copper/zinc/aluminum water gas shift catalyst is described. The catalyst is formed from a precursor, wherein the precursor includes aluminum in the form of hydrotalcite and aluminum separate from the hydrotalcite. A method of making the catalyst and a process for using the catalyst are also described.Type: GrantFiled: March 22, 2002Date of Patent: February 17, 2004Assignee: Sud-Chemie Inc.Inventors: Yeping Cai, Sally L. Davies, Jon P. Wagner
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Patent number: 6693055Abstract: The present invention relates to a method for the preparation of a zeolite-substrate composite comprising a patterned zeolite monolayer or multilayer on a substrate, which comprises forming a pattern of a linking compound on the substrate by a selective irradiation with a UV ray, a selective application of a linking compound or a blocking compound, or a selective deposition of a metal, and combining zeolite particles on the portion whereon the linking compound is patterned. The substrate is selected from a group consisting of a substrate having surface hydroxyl groups, a metal capable of being reacted with thiol or amino groups, and a polymeric material having various surface functional groups. The present invention also relates to a zeolite-substrate composite comprising a patterned zeolite monolayer or multilayer on a substrate prepared by said method.Type: GrantFiled: June 28, 2002Date of Patent: February 17, 2004Assignee: Sogang University CorporationInventors: Kyung-Byung Yoon, Goo-Soo Lee, Kwang Ha, Yun-Jo Lee, Yu-Sung Chun, Yong-Soo Park
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Patent number: 6689709Abstract: The present invention is directed to a metal-promoted zeolite beta catalyst useful in the selective catalytic reduction of nitrogen oxides with ammonia in which the zeolite beta is pre-treated so as to provide the zeolite with improved hydrothermal stability. The stabilized beta zeolite is provided by incorporating into the zeolite structure non-framework aluminum oxide chains. The aluminum oxide chains can be incorporated into the zeolite structure by a unique steaming regimen or by treatment with rare earth metals, such as cerium. The treatment process is unlike well-known methods of dealuminizing zeolites for the purpose of increasing the silica to alumina ratio. In the present invention, the non-framework aluminum oxide is characterized by FT-IR by a peak at 3781±2 cm−1, which when present, stabilizes the zeolite against further dealumination such as under oxidizing and harsh hydrothermal conditions.Type: GrantFiled: November 15, 2000Date of Patent: February 10, 2004Assignee: Engelhard CorporationInventors: Pascaline H. Tran, Xinsheng Liu, James M. Chen, Gerard D. Lapadula, Howard Furbeck
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Patent number: 6689195Abstract: A process is described for the manufacture of crystalline molecular sieve layers with good para-xylene over meta-xylene selectivity's good para-xylene permeances and selectivities. The process requires impregnation of the support prior to hydrothermal synthesis using the seeded method and may be undertaken with pre-impregnation masking. The crystalline molecular sieve layer has a selectivity (&agr;x) for para-xylene over meta-xylene of 2 or greater and a permeance (Qx) for para-xylene of 3.27×10−8 mole(px)/m2.s.Pa(px) or greater measured at a temperature of ≧250° C. and an aromatic hydrocarbon partial pressure of ≧10×103 Pa.Type: GrantFiled: June 20, 2002Date of Patent: February 10, 2004Inventors: Marc Henri Carolina Anthonis, Anton-Jan Bons, Harry William Deckman, Jonas Hedlund, Wenyih F. Lai, Jacobus Anna Josephus Peters
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Patent number: 6682650Abstract: A catalyst support including a zeolite having an Al/Si atomic ratio of 0.01-0.1 and mesopores having a pore diameter in the range of 5-30 nm, and ultrafine particles composited to inside walls of the mesopores. The superfine particles are those of an oxide of a metal selected from Ti, Zr and Hf.Type: GrantFiled: June 5, 2001Date of Patent: January 27, 2004Assignees: Japan Cooperation Center, Petroleum, National Institute of Advanced Industrial Science and TechnologyInventors: Kosaku Honna, Yasuhiro Araki, Yasuo Miki, Hiromichi Shimada
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Patent number: 6680278Abstract: The invention is directed to a method of synthesising silicoaluminophosphate molecular sieves using synthesis templates that contain at least one dimethylamino moiety. The use of dimethylamino moiety containing templates results in good quality SAPO molecular sieves of CHA framework type.Type: GrantFiled: June 12, 2002Date of Patent: January 20, 2004Assignee: ExxonMobil Chemical Patents, Inc.Inventors: Guang Cao, Matu J. Shah
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Patent number: 6677411Abstract: A catalyst component for olefin polymerization, which comprises an ion-exchange layered silicate having the following features 1 and 2: feature 1: in a pore size distribution curve calculated from desorption isotherm by nitrogen adsorption-desorption method, a pore diameter Dm showing a maximum peak intensity DVM is from 60 to 200 Å; and feature 2: in a pore size distribution curve calculated from desorption isotherm by nitrogen adsorption-desorption method, a pore diameter Dm1/2 (Å) on the smaller pore size side corresponding to a ½ peak intensity of the maximum peak intensity DVM has a relation of Dm1/2/Dm of at least 0.65 and less than 1, provided that the largest value is employed when there are a plurality of Dm1/2 values.Type: GrantFiled: May 6, 2002Date of Patent: January 13, 2004Assignee: Japan Polychem CorporationInventors: Hideshi Uchino, Hiroshi Nakano, Shuuichi Toriu, Takao Tayano, Hirotugu Niwa, Yoshiyuki Ishihama, Toshihiko Sugano
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Patent number: 6677271Abstract: The invention relates to a catalyst, in particular for the hydrogenation of functional groups of organic compounds in the presence of water, comprising nickel on a support, the catalyst being reduced and stabilized.Type: GrantFiled: November 30, 2001Date of Patent: January 13, 2004Assignee: Kataleuna GmbH CatalystsInventors: Peter Birke, Reinhard Geyer, Peter Kraak, Rainer Schodel
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Patent number: 6673734Abstract: A catalyst component, a catalyst, and a process for making the component and catalyst are disclosed herein. Also disclosed herein is a fluid catalytic cracking process for converting petroleum feedstocks to lower boiling products wherein the feedstock is contacted with the catalyst. The catalyst component is a crystalline microporous oxide catalyst to which a compound for promoting dehydrogenation and increasing Lewis acidity is effectively added. This catalyst component can be included in an inorganic oxide matrix material and used as a catalyst. Preferably, the compound for promoting dehydrogenation and increasing Lewis acidity is effectively added to a non-framework portion of the crystalline microporous oxide.Type: GrantFiled: August 31, 2000Date of Patent: January 6, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: William L. Schuette, Albert E. Schweizer
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Patent number: 6673235Abstract: A fluid catalytic cracking catalyst made from microspheres that initially contain kaolin, a dispersible boehmite alumina and a sodium silicate or silica sol binder. The kaolin portion contains hydrous kaolin and a particular kaolin which has been calcined through its characteristic exotherm and which produces a catalyst having a novel morphology comprising a macroporous matrix and crystallized zeolite freely coating the walls of the pores of the matrix. Calcination of the hydrous kaolin to metakaolin and formation of in-situ zeolite by treatment with sodium silicate yields a catalyst containing Y-faujasite and transforms the dispersible boehmite into a transitional alumina. The catalyst can be used to crack resid or resid-containing feeds as the alumina phase formed from the dispersible boehmite passivates nickel and vanadium contaminants.Type: GrantFiled: June 6, 2002Date of Patent: January 6, 2004Assignee: Engelhard CorporationInventors: David H. Harris, Mingting Xu, David Stockwell, Rostam J. Madon
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Patent number: 6670295Abstract: The present invention relates to a highly active midbarrel hydrocracking catalyst and a process for the preparation thereof. The support of the catalyst comprises a modified zeolite-Y, a modified zeolite-&bgr;, alumina, etc. The composite of the modified zeolite-Y and zeolite-&bgr; exhibits a good synergistically catalytic effect. The catalyst prepared by supporting Group VIB and/or Group VIII metal components is useful in the hydrocacking of heavy oils with high content of sulfur and nitrogen to produce high quality middle distillates with maximum output. The activity of and selectivity to middle distillates of the catalyst are remarkably raised simultaneously. Moreover, the solidifying point of the produced diesel is remarkably lowered.Type: GrantFiled: October 25, 2001Date of Patent: December 30, 2003Assignees: China Petroleum and Chemical Corporation, Fushun Research Institute of Petroleum and Petrochemicals Sinopec Corp.Inventors: Fenglai Wang, Zhengnan Yu, Minghua Guan, Liting Dong
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Patent number: 6667267Abstract: The invention concerns a hydrocracking process using a catalyst comprising at least one matrix, an IM-5 zeolite, at least one metal selected from the group formed by metals from group VIB and group VIII of the periodic table, optionally at least one element selected from the group formed by phosphorous, boron and silicon, and optionally at least one group VIIA and/or at least one group VIIB and/or at least one group VB element (in particular niobium). The invention also concerns a catalyst containing at least one matrix, an IM-5 zeolite, at least one metal from groups VIII and/or VIB and at least one promoter element which is boron and/or silicon. The catalyst can also contain at least one group VIIA element and/or at least one group VIIB element and/or at least one group VB element.Type: GrantFiled: December 21, 2001Date of Patent: December 23, 2003Assignee: Institute Francais du PetroleInventors: Eric Benazzi, Slavik Kasztelan
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Patent number: 6667265Abstract: A method for producing a zeolite composite membrane in which a zeolite membrane is formed on a porous substrate includes the steps of: coating a zeolite membrane on a porous substrate made of zeolite having the same or a similar composition as the zeolite membrane and containing the same template as the zeolite membrane; and calcining the porous substrate having the zeolite membrane thereon to remove the template from the zeolite membrane and the porous substrate at once. A zeolite composite membrane that does not have cracks can be obtained by almost equalizing thermal expansion coefficients of the porous substrate and the zeolite membrane.Type: GrantFiled: April 3, 2001Date of Patent: December 23, 2003Assignee: NGK Insulators, Ltd.Inventors: Toshihiro Tomita, Kunio Nakayama
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Patent number: 6660684Abstract: An organic halogen compound-decomposing catalyst is provided, which affords excellent decomposing percentages even at low temperatures, and reduces the possibility of re-synthesizing dioxins and brominated dioxins. An organic halogen compound-decomposing catalyst is obtained by reacting a Pt salt and/or a Pd salt, an alkoxide derivative of Ti compound and an amino acid as an organic binder in a solvent, thereby synthesizing an organic metal precursor containing Pt and/or Pd and Ti in molecules thereof, and heating the organic metal precursor. This catalyst may be carried on a surface of a clean side of a ceramic filter. Since active points can be increased by uniformly dispersing the Pt and/or Pd particles in Ti particles, the catalyst has higher activity as compared with conventional catalysts, and exhibits excellent decomposing effects even at temperatures lower than 200° C.Type: GrantFiled: December 14, 2001Date of Patent: December 9, 2003Assignee: NGK Insulators, Ltd.Inventors: Katsuhiro Tokura, Kazuyuki Oshita