Patents Examined by Cam N. Nguyen
  • Patent number: 11648537
    Abstract: A supported catalyst for decomposing an organic substance that includes a carrier and catalyst particles supported on the carrier. The catalyst particles contain a perovskite-type composite oxide represented by AxByMzOw, where A contains at least one of Ba and Sr, B contains Zr, M is at least one of Mn, Co, Ni, and Fe, y+z=1, x>1, z<0.4, and w is a positive value that satisfies electrical neutrality. An organic substance decomposition rate after the supported catalyst is subjected to a heat treatment at 950° C. for 48 hours is greater than 0.97 when the organic substance decomposition rate before the heat treatment is regarded as 1, and an amount of the catalyst particles peeled off when the supported catalyst is ultrasonicated in water at 28 kHz and 220 W for 15 minutes is less than 1 wt % of the catalyst particles before untrasonication.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: May 16, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Satoshi Kuretake, Nario Sugahara, Kentaro Ishihara
  • Patent number: 11642655
    Abstract: A catalytic article for treating exhaust gas comprising: a first catalytic region beginning at the inlet end and extending for less than the axial length L, wherein the first catalytic region comprises a first palladium component and a first oxygen storage capacity (OSC) material comprising ceria; a second catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the second catalytic region comprises a second palladium component and a second OSC material comprising ceria; a third catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the third catalytic region comprises a third rhodium component and a third OSC material comprising ceria; wherein at least a portion of the first catalytic region is not covered by the second catalytic region and/or the third catalytic region; and wherein (a) the ceria amount in the first catalytic region is less than 50% of the total ceria amount in the first, second, and third catalytic reg
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: May 9, 2023
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Takeshi Kadono, Kenji Tanikawa
  • Patent number: 11642659
    Abstract: The invention discloses a catalyst for removing volatile organic compounds and a preparation method therefor. In the catalyst, aluminum oxide modified by iron, cobalt and nickel is used as a carrier, cordierite honeycomb ceramic is used as a matrix, and an extremely low content of a mixture of platinum and palladium is used as an active component; a molar ratio of platinum to palladium is 0-1:0-9, and an amount of the mixture of platinum and palladium accounts for 0.01% to 0.05% of a mass of the matrix; and an amount of the carrier accounts for 3% to 5% of the mass of the matrix.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: May 9, 2023
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Mingli Fu, Qi Gan, Hui He, Junliang Wu, Daiqi Ye
  • Patent number: 11643954
    Abstract: Disclosed herein are monolith oxidation catalysts for the destruction of CO and volatile organic compounds (VOC) chemical emissions, in particular, the destruction of light alkane organic compounds. The catalysts contain high surface area refractory oxides of silica- and hafnia-doped zirconia and silica, or tin oxide or stabilized alumina; and at least one platinum group metals, in particular platinum metal, or a combination of platinum and palladium.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: May 9, 2023
    Assignee: CLARIANT INTERNATIONAL LTD
    Inventors: Zhongyuan Dang, Karen Buckman, Gregory Cullen, Seyma Ortatatli
  • Patent number: 11642658
    Abstract: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate; and a first catalytic region on the substrate; wherein the first catalytic region comprises a first platinum group metal (PGM) component, wherein the first PGM component comprises PGM nanoparticles, wherein the PGM nanoparticles have an average particle size of about 1 to about 20 nm with a standard deviation (SD) no more than 1 nm.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: May 9, 2023
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Kyoji Kitamoto, Shuhei Nagaoka, Daisuke Yokota
  • Patent number: 11633724
    Abstract: Methods for exhaust gas purification, including the steps of: attaching an exhaust gas purification catalyst to an exhaust system of an internal combustion engine, and supplying an exhaust gas to the exhaust gas purification catalyst, where the exhaust gas purification catalyst includes an upper layer containing first carrier particles which are particles of an inorganic oxide and rhodium, and a lower layer containing second carrier particles which are particles of an inorganic oxide, the upper layer includes a rhodium-rich portion near the surface of the upper layer on the upstream side of the exhaust gas flow, and the existence range of the rhodium-rich portion is in a range of greater than 50% to 80% of the length of the upper layer from a downstream side end of an exhaust gas flow and of less than 20 ?m in the depth direction from an outermost surface of the upper layer.
    Type: Grant
    Filed: July 11, 2022
    Date of Patent: April 25, 2023
    Assignees: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shunsuke Oishi, Takaya Ota, Yoshinori Saito, Seiji Nakahigashi, Isao Chinzei, Hiromasa Suzuki
  • Patent number: 11631865
    Abstract: The present invention relates to a transition metal nitride support, a method of manufacturing the same, a metal catalyst and a platinum-alloy catalyst including the transition metal nitride support, and manufacturing methods thereof. The manufactured transition metal support prevents corrosion of the support and aggregation of the platinum catalyst, thereby exhibiting high oxygen reduction catalytic activity. Also, strong metal-support interaction (SMSI) can be stabilized, thus improving the durability of the catalyst. The transition metal support includes large pores uniformly distributed therein, thereby increasing the amount of the catalyst supported and minimizing mass-transfer resistance in a membrane- electrode assembly, increasing the performance of a polymer electrolyte membrane fuel cell. The metal catalyst includes platinum particles loaded on the transition metal nitride support, thus exhibiting superior durability and activity.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: April 18, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Korea Advanced Institute of Science and Technology
    Inventors: Jee Youn Hwang, Eun Jik Lee, Ji Hoon Jang, Song I Oh, Jin Woo Lee, Sol Youk, Dong Yoon Woo
  • Patent number: 11623179
    Abstract: The present invention relates to a particulate filter which comprises a wall-flow filter of length L and two different catalytically active coatings Y and Z, wherein the wall-flow filter comprises channels E and A that extend in parallel between a first and a second end of the wall-flow filter and are separated by porous walls which form the surfaces OE and OA, respectively, and wherein the channels E are closed at the second end and the channels A are closed at the first end, and wherein the coatings Y and Z have the same oxygen storage components and the same carrier materials for noble metals. The invention is characterized in that the coating Y is located in the channels E on the surfaces OE and the coating Z is located in the channels A on the surfaces OA.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: April 11, 2023
    Assignee: UMICORE AG & CO. KG
    Inventors: Jan Schoenhaber, Naina Deibel, Martin Roesch, Stephanie Spiess
  • Patent number: 11618009
    Abstract: The present invention relates to a honeycomb catalytic converter, including: a honeycomb structured body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween; and Pd and Rh supported on the partition walls of the honeycomb structured body, wherein the honeycomb structured body is an extrudate containing a ceria-zirconia complex oxide and alumina, a Pd-carrying region where only Pd is supported is formed on the partition walls within a predetermined width from one end of the honeycomb structured body, and a Rh-carrying region where only Rh is supported is formed on the partition walls within a predetermined width from the other end of the honeycomb structured body, and the Pd-carrying region extends to at least 50% of the length of the honeycomb structured body, and the Rh-carrying region extends to at least 20% of the length of the honeycomb structured body.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: April 4, 2023
    Assignees: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinnosuke Goto, Takumi Tojo, Takeru Yoshida, Hiromasa Suzuki
  • Patent number: 11618008
    Abstract: Methods for preparing ceria-zirconia (CZO) materials calcined with precious group metals (PGM) include calcining a CZO material with PGM. The calcined CZO/PGM catalyst is reduced at a temperature of ?1000° C. to ?1100° C. for a time of ?0.5 hour to 1 hour to form a (CZO/PGM)-pyrochlore catalyst. The (CZO/PGM)-pyrochlore catalyst exhibits superior oxygen storage capacity characteristics as a three-way catalyst in vehicle exhaust gas systems.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: April 4, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Jason Wu, Giovanni Cavataio, Ann O'Neill, Natalie Roxas
  • Patent number: 11614013
    Abstract: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a first oxygen storage capacity (OSC) material, wherein the first OSC material has a fresh specific surface area (SSA) of at least 10 m2/g; and wherein the first OSC material has an SSA difference of no more than 30 m2/g between the fresh first OSC material and the aged first OSC material.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: March 28, 2023
    Assignees: Johnson Matthey Public Limited Company, Johnson Matthey (Shanghai) Chemicals Limited
    Inventors: Hai-Ying Chen, Hongyu Ji, Dongsheng Qiao, Eric Tyo, Takashi Yamada, Xiang Zheng
  • Patent number: 11607672
    Abstract: Methods for exhaust gas purification, including the steps of: attaching an exhaust gas purification catalyst to an exhaust system of an internal combustion engine, and supplying an exhaust gas to the exhaust gas purification catalyst, where the exhaust gas purification catalyst includes an upper layer containing first carrier particles which are particles of an inorganic oxide and rhodium, and a lower layer containing second carrier particles which are particles of an inorganic oxide, the upper layer includes a rhodium-rich portion near the surface of the upper layer on the upstream side of the exhaust gas flow, and the existence range of the rhodium-rich portion is in a range of greater than 50% to 80% of the length of the upper layer from a downstream side end of an exhaust gas flow and of less than 20 ?m in the depth direction from an outermost surface of the upper layer.
    Type: Grant
    Filed: July 11, 2022
    Date of Patent: March 21, 2023
    Assignees: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shunsuke Oishi, Takaya Ota, Yoshinori Saito, Seiji Nakahigashi, Isao Chinzei, Hiromasa Suzuki
  • Patent number: 11602742
    Abstract: Provided is an exhaust gas purification device that ensures an improved purification performance and a suppressed pressure loss. An exhaust gas purification device of the present disclosure includes a honeycomb substrate and an inflow cell side catalyst layer. disposed on a surface on the inflow cell side in an inflow side region of the partition wall. When a gas permeability coefficient of an inflow side partition wall portion including the inflow side region of the partition wall and the inflow cell side catalyst layer is Ka and a gas permeability coefficient of an outflow side partition wall portion including an outflow side region at least from the predetermined position to an outflow side end of the partition wall is Kb, a ratio Ka/Kb of the gas permeability coefficients is within a range of 0.4 or more and 0.8 or less.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: March 14, 2023
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CATALER CORPORATION
    Inventors: Koji Sugiura, Hiromasa Nishioka, Naoto Miyoshi, Akemi Sato, Ryota Nakashima, Masatoshi Ikebe, Keisuke Murawaki, Hirotaka Ori
  • Patent number: 11590483
    Abstract: Aspects of the present application provides for enhanced catalytic materials, which can feature multiple functional and/or catalytic species, and methods of their formation. The materials can include catalytic nanoparticles (NPs) partially embedded within a supporting matrix. Treatment of the material, e.g., thermal, optical, microwave, plasma, and/or chemical treatment, can lead to the formation of functionally, e.g., catalytic or co-catalytic, relevant chemical and structural/morphological species or features at the NP-matrix, NP-pore, and matrix-pore interfaces. The treated material is characterized by enhanced properties, e.g., greater mechanical stability.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: February 28, 2023
    Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Elijah Shirman, Tanya Shirman, Joanna Aizenberg, Michael Aizenberg
  • Patent number: 11583834
    Abstract: An automotive catalytic converter includes a three-way catalyst having Rh as the only precious metal configured as a front zone and a three-way catalyst having a mixture of Rh and Pd, Pt, or both configured as a rear zone, such that an exhaust gas from an internal combustion engine passes through the front zone before passing through the rear zone to minimize sulfur poisoning of the catalytic converter.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: February 21, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Yisun Cheng, Giovanni Cavataio, Jeffrey Scott Hepburn, Mira Bumbaroska, Carolyn Parks Hubbard
  • Patent number: 11577235
    Abstract: A layered catalyst reactor system and process for hydrotreatment of hydrocarbon feedstocks. The layered catalyst system reactors comprise vertical bed layers including a demetallization catalyst layer, multiple layers of supported hydrotreating catalyst layer, and multiple alternating layers of supported hydrocracking catalysts and self-supported hydrotreating catalysts. The arrangement of the catalyst layers mitigates the risk of temperature run-aways, with improvements in hydrotreatment performance.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: February 14, 2023
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Axel Brait, Xiaoying Ouyang, Alexander Kuperman, Theodorus Ludovicus Michael Maesen
  • Patent number: 11571683
    Abstract: A honeycomb-structured catalyst for decomposing an organic substance, which includes a catalyst particle. The catalyst particle contains a perovskite-type composite oxide represented by AxByMzOw, where the A contains at least of Ba and Sr, the B contains Zr, the M is at least one of Mn, Co, Ni, and Fe, y+z=1, 1.001?x?1.05, 0.05?z?0.2, and w is a positive value that satisfies electrical neutrality. The toluene decomposition rate is greater than 90% when toluene is decomposed using the honeycomb-structured catalyst subjected to a heat treatment at 1200° C. for 48 hours and a gas that contains 50 ppm toluene, 80% nitrogen, and 20% oxygen as a volume concentration as a target at a space velocity of 30,000/h and a catalyst temperature of 400° C.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: February 7, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Naoya Mori, Satoshi Kuretake, Nario Sugahara, Kentaro Ishihara
  • Patent number: 11563219
    Abstract: A carrier powder is thermodynamically stable and conductivity can be easily provided thereto. A carrier powder includes an aggregate of carrier fine particles; wherein: the carrier fine particles include a chained portion structured by fusion bonding a plurality of crystallites into a chain; the carrier fine particles contain titanium oxide; and a ratio of anatase phase/rutile phase of the titanium oxide of the carrier powder is 0.2 or lower.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: January 24, 2023
    Assignee: UNIVERSITY OF YAMANASHI
    Inventors: Katsuyoshi Kakinuma, Makoto Uchida, Akihiro Iiyama
  • Patent number: 11559788
    Abstract: The problem to be solved by the present invention is to provide an oxygen storage and release material comprising a ceria-zirconia-based complex oxide improved in ability to remove HC and NOx and a three-way catalyst able to reduce an amount of NOx emission. Further, to solve this problem, an oxygen storage and release material comprising a ceria-zirconia-based complex oxide containing Gd2O3 in 0.1 mol % or more and less than 20 mol % and having an ion conductivity of 2×10?5 S/cm or more at 400° C. is provided. Further, in addition to the above, an oxygen storage and release material having a molar ratio of cerium and zirconium of 0.2 or more and 0.6 or less by cerium/(cerium+zirconium) and an speed of oxygen storage and release “?t50” of 20.0 seconds or more or amount of oxygen storage and release of 300 ?mol-O2/g or more etc. was obtained.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: January 24, 2023
    Assignees: NIPPON DENKO CO., LTD., JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Keigo Aihara, Tomoharu Itoh, Hirofumi Konno, Shuhei Nagaoka, Takashi Yamada
  • Patent number: 11534736
    Abstract: Emissions treatment systems of combustion engines are provided, which comprise a platinum-containing catalyst that is degreened during production, which is before exposure to operating conditions of a vehicle having a diesel engine. The platinum-containing catalyst, in the form of a platinum component on a high surface area refractory metal oxide support, exhibits a vibration frequency of about 2085 to about 2105 cm?1 as measured by CO-DRIFTS. Such catalytic material is essentially-free of platinum oxide species found at greater than about 2110 cm?1 as measured by CO-DRIFTS. Such catalysts can provide excellent and consistent conversion of nitrogen oxide (NO) to nitrogen dioxide (NO2).
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: December 27, 2022
    Assignee: BASF CORPORATION
    Inventors: Xinyi Wei, Stanley A. Roth, Haiyang Zhu