Patents Examined by Sheng H Davis
  • Method and apparatus for removing NOx and N2O from a gas
    Patent number: 11325069
    Abstract: Method for reducing the content of nitrogen oxides NOx and nitrous oxide N2O in an input gas, comprising the steps of: treating said gas with a first amount of a NOx reducing agent in a first de-NOx catalytic bed; treating the effluent of said first de-NOx catalytic bed in at least one de-N2O catalytic bed for removal of N2O; treating the effluent of said at least one de-N2O catalytic bed with a second amount of a NOx reducing agent in a second de-NOx catalytic bed.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: May 10, 2022
    Assignee: Casale SA
    Inventor: Jean François Granger
  • Zeolite after treatment method
    Patent number: 11325835
    Abstract: This invention relates generally to a process to perform controlled alkaline and acid treatments on inorganic porous solids, yielding superior physico-chemical and catalytic properties, whereas the particle and crystal size is not negatively influenced. Accordingly, the solids obtained in this fashion can be easily recovered from the alkaline solution. The latter being problematic in the state of the art.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: May 10, 2022
    Assignee: Katholieke Universiteit Leuven
    Inventors: Danny Verboekend, Bert F. Sels, Martin A. D'Halluin
  • Process for the preparation of flocculated filler particles
    Patent number: 11326307
    Abstract: The present invention concerns a process for the preparation of flocculated filler particles, wherein at least two aqueous suspensions of at least one filler material and at least one flocculating additive are combined.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: May 10, 2022
    Assignee: OMYA INTERNATIONAL AG
    Inventors: Michel Schenker, Matthias Buri, Lars Andersson, Daniel Gantenbein, Patrick A. C. Gane
  • Copper and iron co-exchanged chabazite catalyst
    Patent number: 11311867
    Abstract: The present disclosure generally provides catalysts, catalytic articles and catalyst systems including such catalytic articles. In particular, the catalyst composition includes a zeolite having a chabazite (CHA) crystal structure ion-exchanged with iron and copper. Methods of making and using the catalyst composition are also provided, as well as emission treatment systems containing a catalyst article coated with the catalyst composition. The catalyst article present in such emission treatment systems is useful to catalyze the reduction of nitrogen oxides in gas exhaust in the presence of a reductant.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: April 26, 2022
    Assignee: BASF CORPORATION
    Inventor: Ivan Petrovic
  • Exhaust gas purification catalyst and method for manufacturing exhaust gas purification catalyst
    Patent number: 11311859
    Abstract: The exhaust gas purification catalyst disclosed here is an exhaust gas purification catalyst disposed in the exhaust pipe of an internal combustion engine to purify nitrogen oxides contained in exhaust gas discharged from the internal combustion engine, provided with a silver alumina catalyst comprising at least alumina as a catalyst and silver supported on this alumina, wherein, in the silver alumina catalyst, the ratio of the peak intensity at a wave number of 1595 cm?1 to the peak intensity at a wave number of 1613 cm?1 by the pyridine IR method is at least 0.3, and the carried amount of the silver is 1.0 wt % to 6.0 wt % given 100 wt % as the total amount of the silver alumina catalyst.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: April 26, 2022
    Assignee: Cataler Corporation
    Inventors: Keigo Hori, Norihiko Aono, Daisuke Oki, Yuya Kawano
  • Systems and method for SOmitigation at high temperature injection locations
    Patent number: 11311839
    Abstract: Systems and methods for the use of highly reactive hydrated lime (HRH) in high temperature flue gas streams, namely those at greater than 400° F., such as are present before an air preheater (APH) to remove sulfur trioxide (SO3) from the flue gas.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: April 26, 2022
    Assignee: Mississippi Lime Company
    Inventors: Curt Biehn, Randy Griffard, Mark DeGenova, Eric Van Rens, Pat Mongoven
  • Polycrystalline silicon rod and method for producing same
    Patent number: 11306001
    Abstract: The present invention provides a polycrystalline silicon rod whose rod surface portion has a phosphorus concentration of 0.015 ppba or less, in which the ratio (P2/P1) of the phosphorus concentration (P2) of the rod center portion to the phosphorus concentration (P1) of the rod surface portion is within the range of 2 or lower. The present invention also provides a method for producing a polycrystalline silicon rod by the Siemens method that assembles a polycrystalline silicon seed rod in a reactor, then heats the seed rod up to a temperature of 1000° C. or more and less than the melting point of silicon by energization heating, and supplies a raw material gas including trichlorosilane gas and hydrogen gas as the main components to the reactor at the heating temperature to deposit and grow silicon on the seed rod surface.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: April 19, 2022
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventor: Kazuyuki Ito
  • Chalcogen-containing compound, its preparation method and thermoelectric element comprising the same
    Patent number: 11306004
    Abstract: A chalcogen-containing compound of the following Chemical Formula 1 which exhibits excellent phase stability at a temperature corresponding to the driving temperature of a thermoelectric element, and also exhibits an excellent thermoelectric performance index (ZT) through an increase in a power factor and a decrease in thermal conductivity, a method for preparing the same, and a thermoelectric element including the same: V1-xMxSn4-yPbyBi2Se7-zTez??[Chemical Formula 1] In the above Formula 1, V is a vacancy, M is an alkali metal, x is greater than 0 and less than 1, y is greater than 0 and less than 4, and z is greater than 0 and less than or equal to 1.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: April 19, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Min Kyoung Kim, Yu Ho Min, Cheol Hee Park, Kyung Moon Ko, Chee Sung Park, Jae Hyun Kim, Myung Jin Jung
  • Nitrogen oxide storage material and exhaust gas purification method
    Patent number: 11298674
    Abstract: An object of the present disclosure is to provide an NOx storage material having sufficient NOx storage capacity even in a low temperature region and a production method thereof. An NOx storage material including a composite oxide of silver and gallium. The composite oxide of silver and gallium is preferably a delafossite-type composite oxide. The composite oxide is produced by dissolving a silver salt and a gallium salt in a solvent and baking the solution, wherein the molar ratio of silver:gallium is preferably from 2:8 to 7:3.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: April 12, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoto Nagata, Daisuke Shimoyama
  • SCR catalyst device containing vanadium oxide and molecular sieve containing iron
    Patent number: 11300029
    Abstract: The invention relates to a catalyst device for purifying exhaust gases containing nitrogen oxide by using selective catalytic reduction (SCR), the catalyst device comprising at least two catalytic layers, the first layer containing vanadium oxide and a mixed oxide comprising titanium oxide and silicon oxide and the second layer containing a molecular sieve containing iron, wherein the first layer is applied onto the second layer. The invention also relates to uses of the catalyst device and a method for purifying exhaust gases.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 12, 2022
    Assignee: UMICORE AG & CO, KG
    Inventors: Stephan Malmberg, Nicola Soeger
  • Combined treatment method of petroleum-contaminated soil
    Patent number: 11292038
    Abstract: A combined remediation method of petroleum-contaminated soil includes: impurity removal pretreatment, photocatalytic pre-oxidation, stepwise thermal desorption of petroleum from soil, and high-temperature oxidation; with iron-titanium composite metal oxide (ITCMO) as a catalyst, conducting oxidation pretreatment under light conditions so that some cross-linked structures in macromolecular petroleum contaminants are broken and degraded; and conducting stepwise pyrolysis to achieve a removal rate of more than 98.00%. The new method adopts a combined remediation technology of photocatalytic pre-oxidation-stepwise pyrolysis, which realizes a relatively-high removal rate of petroleum hydrocarbons and the efficient and harmless remediation of high-concentration petroleum-contaminated soil, and remedied soil can be reused.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: April 5, 2022
    Assignee: CHINA UNIVERSITY OF PETROLEUM
    Inventors: Dong Liu, Shuhai Guo, Wei Zhu, Fushan Wen, Nan Shi, Yu Qiu, Xiaoning Feng, Bo Wu, Gang Li, Changlong Yin, Xiujie Yang, Dehui Kong, Hongbo Dai, Mengfei Li, Sa Wang
  • Complexation and removal of mercury from flue gas desulfurization systems
    Patent number: 11285439
    Abstract: A method for the reduction and prevention of mercury emissions into the environment from combusted fossil fuels or other off-gases with the use of peracetic acid is disclosed. The peracetic acid is used for the capture of mercury from the resulting flue gases using a flue gas desulfurization system or scrubber. The method uses peracetic acid in conjunction with a scrubber to capture mercury and lower its emission and/or re-emission with stack gases. The method allows the use of coal as a cleaner and environmentally friendlier fuel source as well as capturing mercury from other processing systems.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: March 29, 2022
    Assignee: ECOLAB USA INC.
    Inventors: Nicholas R. Denny, Bruce A. Keiser, David M. Dotzauer, Wayne M. Carlson
  • Metal-molybdate and method for making the same
    Patent number: 11286172
    Abstract: A process for producing a metal-molybdate material is provided. The process includes a step of reacting a metal molybdenum (Mo) material in a liquid medium with a first acid to provide a Mo composition and combining the Mo composition with a metal source to provide a metal-Mo composition. The metal-Mo composition can be pH adjusted with a base to precipitate a plurality of metal-Mo particulates.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 29, 2022
    Assignee: BWXT Isotope Technology Group, Inc.
    Inventors: William Earl Russell, II, Earl Brian Barger, Benjamin I. Bishop, Barbara B. Bohannon, Christopher Sean Fewox, James B. Inman, Erik T. Nygaard, Timothy A. Policke, Stephen D. Preite, Roger D. Ridgeway, Steve W. Schilthelm, Bryan Blake Wiggins
  • Preparation method of amphoteric two-dimensional nanosheet
    Patent number: 11279621
    Abstract: An amphoteric two-dimensional nanosheet and a preparation method thereof are provided. The amphoteric two-dimensional nanosheet is prepared by the following steps: uniformly dispersing few-layered graphene oxide into toluene and then adding alkylamine coupling agent to a mixture of the few-layered graphite oxide and the toluene for reaction; amine terminated graphite oxide dispersion that has been prepared is fully dispersed in toluene-dimethylformamide mixed solvent, and then, alkyl glycidyl ether is added into the above solution for reaction, so as to obtain the amphoteric two-dimensional nanosheet.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: March 22, 2022
    Assignee: Southwest Petroleum University
    Inventors: Rui Liu, Shi Gao, Wanfen Pu, Xing Zhao, Lin Sun, Daijun Du, Yingxue Xu
  • Catalyst for the oxidative esterification of aldehydes to carboxylic esters
    Patent number: 11279667
    Abstract: The present invention relates to a novel process for oxidative esterification, generally for reaction of aldehydes with alcohols in the presence of oxygenous gases directly to give the corresponding ester in the presence of a heterogeneous catalyst, by means of which, for example, (meth)acrolein can be converted to methyl (meth)acrylate. The new catalyst has titanium dioxide as the main component of the support material. The catalysts are especially notable for high mechanical and chemical stability and for good catalytic performance even over very long periods. The process is an improvement in the catalyst service life, activity and selectivity over prior art catalysts which lose activity and/or selectivity relatively quickly in continuous operation in media having even a small water content.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: March 22, 2022
    Assignee: Roehm GmbH
    Inventors: Steffen Krill, Marcel Treskow
  • Direct synthesis of metal-containing CHA zeolites
    Patent number: 11278875
    Abstract: A metal-containing chabazite zeolite, which has an FTIR peak area ratio between the peak at 900-1300 cm?1 (Si—O—Si asymmetric stretch) and the peak at 765-845 cm?1 (˜805 cm?1 is Si—O—Si symmetric stretch) of at least 55. A method for preparing metal-containing CHA zeolites with high SCR activity at low reaction temperatures from alkali cation-free reaction mixtures that contain the three OSDA structures: metal-polyamine, N,N,N-trimethyl-1-adamantyl ammonium (TMAda+) and TMAOH. The metal-containing CHA zeolites produced by the disclosed method can be identified by XRD, FTIR spectroscopy, FT-VIS spectroscopy, and scanning electron microscopy. A method of selective catalytic reduction of NOx in exhaust gas using the material described herein is also disclosed.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: March 22, 2022
    Assignee: Ecovyst, Inc
    Inventors: Lifeng Wang, Bjorn Moden, James Thomas Hughes, Hong-Xin Li
  • Mixed template synthesis of low silica CHA zeolite
    Patent number: 11266981
    Abstract: A transition-metal-CHA molecular sieve catalyst and mixed-template synthesis procedure are disclosed.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: March 8, 2022
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alejandra Rivas-Cardona, Joseph Michael Fedeyko, Hai-Ying Chen, Raul Francisco Lobo, Eric Burkholder, Qingling Liu
  • Oxidation of water using layered double hydroxide catalysts
    Patent number: 11258071
    Abstract: A method for oxidizing water including fabricating a working electrode using an electrocatalyst, preparing an electrochemical cell by putting the working electrode, a counter electrode, and a reference electrode in an electrolyte, and performing an oxygen evolution reaction (OER) by applying an electrical potential between the working electrode and the counter electrode. The electrocatalyst includes a nickel-calcium-iron layered double hydroxide (NiCaFe-LDH) nanoparticle, the NiCaFe-LDH nanoparticle has a formula of [Fex)NiCa(1-x](OH)2(NO3)x.nH2O, where: 0.2?x?0.4 and 0?n?2.5.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: February 22, 2022
    Assignee: Azarbaijan Shahid Madani University
    Inventors: Zolfaghar Rezvani, Leila Jafari Foruzin, Biuck Habibi
  • Exfoliating layered transition metal dichalcogenides
    Patent number: 11247915
    Abstract: A technique for exfoliating a transition metal dichalcogenide material to produce separated nano-scale platelets includes combining the transition metal dichalcogenide material with a liquid to form a slurry, wherein the transition metal dichalcogenide material includes layers of nano-scale platelets and has a general chemical formula MX2, and wherein M is a transition metal and X is sulfur, selenium, or tellurium. The slurry of the transition metal dichalcogenide material is treated with an oxidant to form peroxo-metalate intermediates on an edge region of the layers of nano-scale platelets of the transition metal dichalcogenide material. The peroxo-metalate intermediates is treated with a reducing agent to form negatively charged poly-oxo-metalates to induce separation of the transition metal dichalcogenide material into the separated nano-scale platelets of the transition metal dichalcogenide material.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: February 15, 2022
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Richard A. Vaia, Ali M. Jawaid
  • Colloidal ternary group III-V nanocrystals synthesized in molten salts
    Patent number: 11247914
    Abstract: Methods of synthesizing colloidal ternary Group III-V nanocrystals are provided. Also provided are the colloidal ternary Group III-V nanocrystals made using the methods. In the methods, molten inorganic salts are used as high temperature solvents to carry out cation exchange reactions that convert binary nanocrystals into ternary nanocrystals.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: February 15, 2022
    Assignee: The University of Chicago
    Inventors: Dmitri V. Talapin, Vishwas Srivastava