Patents by Inventor Yuejin Li

Yuejin Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210178380
    Abstract: A selective catalytic reduction (SCR) catalyst composition effective in the abatement of nitrogen oxides (NOx) is provided. The SCR catalyst composition significantly increases the conversion of NOx relative to a Cu-chabazite reference catalyst composition at any temperature, and especially at low temperatures. A catalyst article, an exhaust gas treatment system, and a method of treating an exhaust gas stream, each including the SCR catalyst composition of the invention, are also provided. The SCR catalyst composition is particularly useful for treatment of exhaust from a lean-burn engine.
    Type: Application
    Filed: July 30, 2019
    Publication date: June 17, 2021
    Applicant: BASF CORPORATION
    Inventor: Yuejin Li
  • Publication number: 20210114007
    Abstract: The present disclosure generally provides selective catalytic reduction (SCR) catalyst compositions, catalyst articles and catalyst systems including such catalyst articles for treating engine exhaust gas. In particular, the SCR catalyst composition includes a first zeolite and a second zeolite and has not been subjected to temperatures above 650° C. The first zeolite includes a promoter metal and has a first framework structure and at least a portion of the second zeolite is in a form selected from H+ form, NH4+ form, alkali metal form, alkaline earth metal form, and combinations thereof and has a second framework structure. The first framework structure and the second framework structure are different.
    Type: Application
    Filed: April 10, 2019
    Publication date: April 22, 2021
    Applicant: BASF Corporation
    Inventor: Yuejin LI
  • Patent number: 10961890
    Abstract: An on-board vehicle reservoir containing an ammonia/organic solvent solution may be associated with a phase separator configured to isolate ammonia from the solution. The ammonia may be introduced into an exhaust gas stream of an internal combustion engine to function as a catalytic reductant. Ammonia may be employed to generate hydrogen via catalytic decomposition of ammonia, and the hydrogen may be introduced into an exhaust gas stream to aid catalytic reactions such as catalytic oxidation of carbon monoxide (CO) and/or hydrocarbon (HC) and/or reduction of nitrogen oxides (NO); for instance during a cold-start period.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: March 30, 2021
    Assignee: BASF Corporation
    Inventors: Shiang Sung, Michael Locascio, Yuejin Li
  • Patent number: 10919025
    Abstract: A nitrous oxide (N2O) removal catalyst composition for treating an exhaust stream of an internal combustion engine is provided, containing a platinum group metal (PGM) component on a metal oxide-based support, wherein the N2O removal catalyst composition is in a substantially reduced form, such that it has an oxygen deficiency of about 0.05 mmol oxygen atoms/g or greater, and wherein the N2O removal catalyst composition provides effective removal of at least a portion of N2O from the exhaust stream under lean conditions at a temperature of about 350° C. or lower. N2O removal catalytic articles, systems, and methods are also provided for removing at least a portion of N2O from an exhaust stream under lean, low temperature conditions.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: February 16, 2021
    Assignee: BASF Corporation
    Inventors: Yuejin Li, Shiang Sung, Stanley D. Roth, Torsten Neubauer, Susanne Stiebels
  • Patent number: 10792615
    Abstract: Provided are catalyst articles, methods of manufacturing catalyst articles, and methods for controlling emissions in diesel engine exhaust streams with catalyst articles, where the emission treatment system of various embodiments effectively treats diesel engine exhaust with a catalyst article. In one or more embodiments, the catalyst articles have a platinum group metal end coating covering an outlet end surface of the catalytic article. In one or more embodiments, a method is provided where an applicator transfers a platinum group metal coating to an outlet end face of a catalytic article.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: October 6, 2020
    Assignee: BASF Corporation
    Inventors: Yuejin Li, Stanley A. Roth
  • Publication number: 20200263586
    Abstract: The present disclosure is directed to a system for treating an exhaust gas stream from an engine, which includes a diesel oxidation catalyst (DOC) located downstream of the engine and adapted for oxidation of hydrocarbons and carbon monoxide, an injector adapted for the addition of a reductant to the exhaust gas stream located downstream of the DOC, a catalyzed soot filter (CSF) located downstream of the injector, and a selective catalytic reduction component adapted for the oxidation of nitrogen oxides located downstream of the CSF. The CSF is adapted for oxidizing hydrocarbons and includes a selective oxidation catalyst composition on a filter with high selectivity ratio for hydrocarbon oxidation: ammonia oxidation (e.g., at least 0.6).
    Type: Application
    Filed: May 8, 2020
    Publication date: August 20, 2020
    Inventors: Kevin Hallstrom, David Youngren, Yuejin Li
  • Publication number: 20200232366
    Abstract: A nitrous oxide (N2O) removal catalyst composite is provided, comprising a N2O removal catalytic material on a substrate, the catalytic material comprising a rhodium (Rh) component supported on a ceria-based support, wherein the catalyst composite has a H2-consumption peak of about 100° C. or less as measured by hydrogen temperature-programmed reduction (H2-TPR). Methods of making and using the same are also provided.
    Type: Application
    Filed: April 2, 2020
    Publication date: July 23, 2020
    Inventors: Yuejin Li, Xiaolai Zheng, Stanley Roth, Olga Gerlach, Andreas Sundermann
  • Patent number: 10634030
    Abstract: A nitrous oxide (N2O) removal catalyst composite is provided, comprising a N2O removal catalytic material on a substrate, the catalytic material comprising a rhodium (Rh) component supported on a ceria-based support, wherein the catalyst composite has a H2-consumption peak of about 100° C. or less as measured by hydrogen temperature-programmed reduction (H2-TPR). Methods of making and using the same are also provided.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: April 28, 2020
    Assignee: BASF Corporation
    Inventors: Yuejin Li, Xiaolai Zheng, Stanley Roth, Olga Gerlach, Andreas Sundermann
  • Publication number: 20200032689
    Abstract: An on-board vehicle reservoir containing an ammonia/organic solvent solution may be associated with a phase separator configured to isolate ammonia from the solution. The ammonia may be introduced into an exhaust gas stream of an internal combustion engine to function as a catalytic reductant. Ammonia may be employed to generate hydrogen via catalytic decomposition of ammonia, and the hydrogen may be introduced into an exhaust gas stream to aid catalytic reactions such as catalytic oxidation of carbon monoxide (CO) and/or hydrocarbon (HC) and/or reduction of nitrogen oxides (NO); for instance during a cold-start period.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Inventors: Shiang Sung, Michael Locascio, Yuejin Li
  • Patent number: 10493434
    Abstract: A lean burn engine exhaust treatment articles comprising a low temperature lean NOx trap (LT-LNT) composition and methods for their use is disclosed. A lean burn engine exhaust gas treatment system including the lean burn engine exhaust treatment articles is also disclosed. The low temperature lean NOx trap (LT-LNT) compositions can comprise a washcoat layer on a carrier substrate, the washcoat layer including a platinum group metal component impregnated on a first support material comprising at least 50% alumina. The washcoat layer may further include a low temperature NOx storage material comprising a bulk particulate reducible metal oxide. Methods of monitoring the aging state of a lean burn oxidation catalyst in a lean burn engine catalyst system are also disclosed.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: December 3, 2019
    Assignee: BASF Corporation
    Inventors: Gerd Grubert, Torsten Neubauer, Alfred Punke, Marcus Hilgendorff, Yuejin Li
  • Publication number: 20190242282
    Abstract: Disclosed herein are emission treatment systems, articles, and methods for selectively reducing NOx compounds. The systems include a hydrogen generator, a hydrogen selective catalytic reduction (H2-SCR) article, and one or more of a diesel oxidation catalyst (DOC) and/or a lean NOx trap (LNT) and/or a low temperature NOx adsorber (LTNA). Certain articles may comprise a zone coated substrate and/or a layered coated substrate and/or an intermingled coated substrate of one or more of the H2-SCR and/or DOC and/or LNT and/or LTNA catalytic compositions.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 8, 2019
    Inventor: Yuejin Li
  • Patent number: 10369548
    Abstract: A catalyzed soot filter, in particular for the treatment of Diesel engine exhaust, comprises a coating design which ensures soot particulates filtration, assists the oxidation of carbon monoxide (CO), and produces low H2S emissions during normal engine operations and regeneration events.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: August 6, 2019
    Assignees: BASF SE, BASF Corporation
    Inventors: Gerd Grubert, Alfred H. Punke, Torsten Neubauer, Marcus Hilgendorff, Chung-Zong Wan, Yuejin Li, Matthew Caudle
  • Patent number: 10260395
    Abstract: A nitrous oxide (N2O) removal catalyst composite is described, which includes: a N2O removal catalytic material on a carrier, wherein the catalytic material comprises a platinum group metal (PGM) component on a ceria-containing support having a single phase, cubic fluorite crystal structure. The catalytic material is effective to decompose nitrous oxide (N2O) to nitrogen (N2) and oxygen (O2) and/or to reduce N2O to N2 and water (H2O) and/or (CO2) under conditions of an exhaust stream of an internal combustion engine operating under conditions that are stoichiometric or lean with periodic rich transient excursions. Methods of making and using the same are also provided.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: April 16, 2019
    Assignee: BASF Corporation
    Inventors: Yuejin Li, Xiaolai Zheng, Stanley A. Roth, Olga Gerlach, Andreas Sundermann
  • Patent number: 10253667
    Abstract: Described are exhaust gas treatment systems for treatment of a gasoline engine exhaust gas stream containing NOx, particulate matter, and sulfur. The exhaust gas treatment system comprises: one or more catalytic articles selected from a three-way conversion catalyst (TWC), a lean NOx trap (LNT), and an integrated LNT-TWC; a platinum-containing catalytic article downstream from the one or more catalytic articles; and one or more selective catalytic reduction (SCR) catalytic articles immediately downstream from the platinum-containing catalytic article, the one or more SCR catalytic articles including a molecular sieve. The system stabilizes the SCR catalytic article from poisoning by sulfur.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: April 9, 2019
    Assignee: BASF Corporation
    Inventors: Xiaofan Yang, Wen-Mei Xue, John K. Hochmuth, Matthew J. Schladt, Yuejin Li
  • Patent number: 10215073
    Abstract: The present invention relates to catalyzed soot filter comprising a porous wall flow substrate, a catalyst for selective catalytic reduction (SCR), a palladium component, and a platinum component, the wall flow substrate comprising an inlet end, an outlet end, a substrate axial length extending between the inlet end and the outlet end, and a plurality of channels defined by internal walls of the wall flow substrate, wherein the plurality of channels comprise inlet channels having an open inlet end and a closed outlet end, and outlet channels having a closed inlet end and an open outlet end, and the SCR catalyst is provided on the entire surface of the inlet channel walls and on at least a portion of the surface of the pores within the channel walls underneath the surface of the channel walls coated with the SCR catalyst.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: February 26, 2019
    Assignee: BASF Corporation
    Inventors: Alfred Punke, Gerd Grubert, Marcus Hilgendorff, Torsten Neubauer, Matthew Caudle, Yuejin Li
  • Patent number: 10188987
    Abstract: Provided are multi-zone catalyst articles, methods of manufacturing multi-zone catalyst articles, and methods for controlling emissions in diesel engine exhaust streams with multi-zone catalyst articles, where the emission treatment system of various embodiments effectively treats diesel engine exhaust with a single multi-zone catalyst article.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: January 29, 2019
    Assignee: BASF Corporation
    Inventors: Yuejin Li, Stanley A. Roth
  • Publication number: 20180353905
    Abstract: Provided are catalyst articles, methods of manufacturing catalyst articles, and methods for controlling emissions in diesel engine exhaust streams with catalyst articles, where the emission treatment system of various embodiments effectively treats diesel engine exhaust with a catalyst article. In one or more embodiments, the catalyst articles have a platinum group metal end coating covering an outlet end surface of the catalytic article. In one or more embodiments, a method is provided where an applicator transfers a platinum group metal coating to an outlet end face of a catalytic article.
    Type: Application
    Filed: March 30, 2016
    Publication date: December 13, 2018
    Inventors: Yuejin Li, Stanley A. Roth
  • Publication number: 20180195425
    Abstract: A nitrous oxide (N2O) removal catalyst composite is described, which includes: a N2O removal catalytic material on a carrier, wherein the catalytic material comprises a platinum group metal (PGM) component on a ceria-containing support having a single phase, cubic fluorite crystal structure. The catalytic material is effective to decompose nitrous oxide (N2O) to nitrogen (N2) and oxygen (O2) and/or to reduce N2O to N2 and water (H2O) and/or (CO2) under conditions of an exhaust stream of an internal combustion engine operating under conditions that are stoichiometric or lean with periodic rich transient excursions. Methods of making and using the same are also provided.
    Type: Application
    Filed: June 30, 2016
    Publication date: July 12, 2018
    Inventors: Yuejin Li, Xiaolai Zheng, Stanley A. Roth, Olga Gerlach, Andreas Sundermann
  • Publication number: 20180163596
    Abstract: The present invention relates to catalyzed soot filter comprising a porous wall flow substrate, a catalyst for selective catalytic reduction (SCR), a palladium component, and a platinum component, the wall flow substrate comprising an inlet end, an outlet end, a substrate axial length extending between the inlet end and the outlet end, and a plurality of channels defined by internal walls of the wall flow substrate, wherein the plurality of channels comprise inlet channels having an open inlet end and a closed outlet end, and outlet channels having a closed inlet end and an open outlet end, and the SCR catalyst is provided on the entire surface of the inlet channel walls and on at least a portion of the surface of the pores within the channel walls underneath the surface of the channel walls coated with the SCR catalyst.
    Type: Application
    Filed: May 18, 2016
    Publication date: June 14, 2018
    Applicant: BASF Corporation
    Inventors: Alfred PUNKE, Gerd GRUBERT, Marcus HILGENDORFF, Torsten NEUBAUER, Matthew CAUDLE, Yuejin LI
  • Publication number: 20180111088
    Abstract: Provided are multi-zone catalyst articles, methods of manufacturing multi-zone catalyst articles, and methods for controlling emissions in diesel engine exhaust streams with multi-zone catalyst articles, where the emission treatment system of various embodiments effectively treats diesel engine exhaust with a single multi-zone catalyst article.
    Type: Application
    Filed: March 30, 2016
    Publication date: April 26, 2018
    Inventors: Yuejin Li, Stanley A. Roth