Patents Assigned to Umicore Shokubai Japan Co., Ltd.
  • Publication number: 20190291083
    Abstract: The present invention provides exhaust gas purification catalyst for an internal combustion engine, and exhaust gas purification method using the catalyst. The present invention provides the exhaust gas purification catalyst including a support, a first catalyst layer on an upstream side, a second catalyst layer on a downstream side, and a third catalyst layer. In the exhaust gas purification catalyst, the upstream portion of the third catalyst layer is present on the first catalyst layer, the downstream portion of the third catalyst layer is present on the second catalyst layer, and in the middle portion between the upstream portion and the downstream portion of the third catalyst layer is present between the first catalyst layer and the second catalyst layer.
    Type: Application
    Filed: July 20, 2017
    Publication date: September 26, 2019
    Applicant: Umicore Shokubai Japan Co., Ltd.
    Inventors: Kazuyoshi KOMATA, Hirotaka KUNO, Yuzo HAMADA, Masashi NAKASHIMA, Yuji OGINO, Masanori IKEDA
  • Patent number: 10376839
    Abstract: It is an object to provide an exhaust gas purification catalyst for a lean burn engine having sufficient NOx purification performance. The exhaust gas purification catalyst for a lean burn engine according to the present invention has a catalyst component including noble metal and ceria supported on a three-dimensional structure. In the whole catalyst, the supported amount of ceria per 1 L of catalyst is 140 to 300 g/L, and in the whole catalyst, is 50 to 98% by mass with respect to the whole coated amount. Furthermore, it is characterized that 50% by mass or more of ceria is included in the same catalyst layer in which noble metal is included, and the amount of noble metal included in the catalyst layer is 0.1% by mass or more with respect to the amount of ceria included in the catalyst layer.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: August 13, 2019
    Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Takahiro Umeno, Masaya Hanzawa, Yoshiyuki Hayashi
  • Publication number: 20190232258
    Abstract: A catalyst for purification of exhaust gas containing a phosphorus compound includes: a lower catalyst layer containing at least one of noble metal provided on a refractory three-dimensional structure; and an upper catalyst layer at an inflow side of exhaust gas and an upper catalyst layer at an outflow side of exhaust gas provided on a surface of the lower catalyst layer. The upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side have different concentrations of noble metal. The catalyst has an intermediate zone with a length of 3 to 23% of the overall length of the refractory three-dimensional structure provided between the upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side. The intermediate zone starts from a position 10 to 38% from an end face of the catalyst at the inflow side of exhaust gas.
    Type: Application
    Filed: July 20, 2017
    Publication date: August 1, 2019
    Applicant: Umicore Shokubai Japan Co., Ltd.
    Inventors: Hirotaka KUNO, Masashi NAKASHIMA, Yuzo HAMADA, Masanori IKEDA
  • Patent number: 10226755
    Abstract: The present invention is to provide a NOx storage reduction catalyst for purifying exhaust gas capable of efficiently removing carbon monoxide (CO), a hydrocarbon (HC), and a nitrogen oxide (NOx), in particular NOx, which are harmful components contained in exhaust gas. The NOx storage reduction catalyst for purifying exhaust gas of the present invention is characterized by being obtained by using a complex oxide of strontium and cerium as a catalytic active component, in which the complex oxide of strontium and cerium adsorbs 1.0 mL or less of oxygen per gram in a 400° C. atmosphere, and sinters a precursor at 300° C. or more.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: March 12, 2019
    Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Takahiro Umeno, Masaya Hanzawa, Yoshiyuki Hayashi
  • Patent number: 10150082
    Abstract: A catalyst and system for an internal combustion engine exhaust gas purification includes a first catalyst component region (a) having a catalyst component layer containing Rh at a concentration of 0.1 to 3.0 g/L at a length of 3 to 30 mm on an upstream side, a second catalyst component region (b) having a catalyst component layer containing Pd at a concentration of 1.0 to 20.0 g/L at a length of 10 to 100 mm on a downstream side, and a third catalyst region (c) containing rhodium at a concentration of 0.05 to 1.0 g/L and an oxygen storage material at a concentration of 30 to 150 g/L at a length of 25 to 150 mm on a monolithic support. The catalyst suppresses the formation and discharge of N2O from the exhaust gas with a small amount of a noble metal from the time of cold starting.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: December 11, 2018
    Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventor: Tatsuya Yoshikawa
  • Patent number: 9861961
    Abstract: An exhaust gas purification method by which carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxide (NOx), particularly NOx, which are hazardous components contained in an exhaust gas can be removed efficiently. The disclosure relates to a catalyst for exhaust gas purification including: a three-dimensional structure; and a catalyst component layer composed of one or more constituting layers on the three-dimensional structure, wherein the catalyst component layer contains (a) a noble metal-unsupported alumina having mesopores, (b) NOx storage material-supported cerium, (c) a refractory inorganic oxide, and (d) a noble metal, and the constituting layer of the uppermost surface among the one or more constituting layers contains (a) the noble metal-unsupported alumina and (b) the NOx storage material-supported cerium, a method for producing the same, and an exhaust gas purification method using the catalyst.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: January 9, 2018
    Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Takahiro Umeno, Masaya Hanzawa, Yoshiyuki Hayashi
  • Patent number: 9561494
    Abstract: The purpose of the present invention is to provide a catalyst for exhaust gas purification, which is capable of effectively processing an exhaust gas, particularly carbon monoxide (CO) and hydrocarbon (HC) in the exhaust gas at a low temperature, and a method for producing the catalyst for exhaust gas purification. The purpose is achieved by a catalyst for exhaust gas purification, which is obtained by having a carrier that contains Al2O3 and one or more metal oxides selected from the group consisting of zirconium oxide (ZrO2), cerium oxide (CeO2), yttrium oxide (Y2O3), neodymium oxide (Nd2O3), silicon oxide (SiO2) and titanium oxide (TiO2) support one or more catalyst components selected from the group consisting of gold (Au), silver (Ag), platinum (Pt), palladium (Pd), rhodium (Rh), iridium (Ir), ruthenium (Ru) and osmium (Os). The metal oxides have particle diameters of less than 10 nm.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: February 7, 2017
    Assignees: UMICORE SHOKUBAI JAPAN CO., LTD., UMICORE SHOKUBAI USA INC.
    Inventors: Naohiro Kato, Yuta Akasaka, Yuji Ogino, Yosuke Goto
  • Patent number: 9539542
    Abstract: Provided is a catalyst for purifying an exhaust gas, the catalyst excelling in catalytic performance and oxygen storage capacity. The catalyst for purifying an exhaust gas is a catalyst for purifying an exhaust gas which includes a ceria-zirconia composite oxide having a pyrochlore structure and a ceria-zirconia composite oxide having a cubic crystal structure, wherein at least a part of the ceria-zirconia composite oxide is composited with the ceria-zirconia composite oxide.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: January 10, 2017
    Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Kosuke Mikita, Masanori Ikeda, Shinji Sugihara, Hideki Goto, Takahiro Ikegami
  • Patent number: 9433927
    Abstract: As a way to suppress deterioration of catalytic performance in an exhaust gas purification catalyst even after being exposed to an exhaust gas containing a phosphorus compound, an exhaust gas purification catalyst is provided. The catalyst purifies an exhaust gas containing a phosphorus compound, and the catalyst includes a catalyst layer containing rhodium (Rh), palladium (Pd), and either a ceria-zirconia-lanthana complex oxide or a ceria-zirconia-lanthana-yttria complex oxide as catalyst active components. Further, an average value of distances between Rh particles and the nearest Pd particles of the Rh and the Pd is within 4000 nm, a weight ratio of the Pd to the Rh is from 0.2 to 4.9, and a content rate of yttria in the ceria-zirconia-lanthana-yttria complex oxide is 19% by weight or less.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: September 6, 2016
    Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Masanori Ikeda, Kazuyoshi Komata, Shigekazu Minami, Yuji Ogino, Hideki Goto
  • Patent number: 9429055
    Abstract: Provided is a method for extending a temperature range enabling combustion of high concentration hydrocarbon, or for rapidly supplying high temperature gas to a later stage catalyst. Provided is a method for purification of exhaust gas from an internal-combustion engine comprised by: providing a temperature-raising catalyst for exhaust gas from an internal-combustion engine in an exhaust gas passage of the internal-combustion engine, along flow of said exhaust gas, at the upstream side of a purification catalyst for said exhaust gas; and introducing hydrocarbon in an amount of 1,000 to 40,000 ppm, as converted to methane, from the upstream side of the temperature-raising catalyst, wherein said temperature-raising catalyst has catalytically active components supported onto a refractory three-dimensional structure, wherein concentration of said components has a gradient such that said concentration gradually becomes lower from the inflow side toward the outflow side of said exhaust gas.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: August 30, 2016
    Assignees: UMICORE SHOKUBAI USA INC., UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventor: Masanori Ikeda
  • Patent number: 9421528
    Abstract: A catalyst that is not only capable of efficiently treating CO even at a low exhaust gas temperature, but also capable of exerting favorable CO purification efficiency in a low-temperature exhaust gas even in a case of being exposed for a long time to an engine exhaust gas that is a high temperature and contains HC, CO, NOx, water vapor and the like; and an exhaust gas treatment technique are described. The catalyst for purifying exhaust gas contains: a noble metal; an oxide containing as a base material A at least two kinds of elements selected from the group consisting of aluminum, zirconium and titanium; and an oxide containing as a base material B at least one kind of element selected from the group consisting of silicon, cerium, praseodymium and lanthanum; in which the base material A and the base material B satisfy a specific formula.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: August 23, 2016
    Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Yosuke Goto, Naohiro Kato, Yuta Akasaka, Shota Kawashima
  • Patent number: 9404406
    Abstract: A catalyst for use in a process for purifying exhaust gas from a gasoline engine of the fuel-direct-injection type that varies, in response to changes in the air-fuel ratio, between a first exhaust-gas state featured by an air-fuel ratio in the vicinity of the stoichiometrical air-fuel ratio, and a second exhaust-gas state that forms a more oxidizing, low-temperature atmosphere and that is featured by an air-fuel ratio greater than the stoichiometrical air-fuel ratio, the catalyst being obtained by causing a noble metal and a rare-earth oxide and/or a transition metal to be carried by or to be mixed with a fire-resistant inorganic oxide.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: August 2, 2016
    Assignees: UMICORE SHOKUBAI JAPAN CO., LTD., UMICORE SHOKUBAI USA INC.
    Inventors: Masao Hori, Akihisa Okumura, Makoto Horiuchi
  • Publication number: 20160184803
    Abstract: An exhaust gas purification method by which carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxide (NOx), particularly NOx, which are hazardous components contained in an exhaust gas can be removed efficiently. The disclosure relates to a catalyst for exhaust gas purification including: a three-dimensional structure; and a catalyst component layer composed of one or more constituting layers on the three-dimensional structure, wherein the catalyst component layer contains (a) a noble metal-unsupported alumina having mesopores, (b) NOx storage material-supported cerium, (c) a refractory inorganic oxide, and (d) a noble metal, and the constituting layer of the uppermost surface among the one or more constituting layers contains (a) the noble metal-unsupported alumina and (b) the NOx storage material-supported cerium, a method for producing the same, and an exhaust gas purification method using the catalyst.
    Type: Application
    Filed: July 8, 2014
    Publication date: June 30, 2016
    Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Takahiro UMENO, Masaya HANZAWA, Yoshiyuki HAYASHI
  • Publication number: 20160129430
    Abstract: The purpose of the present invention is to provide an oxidation catalyst for exhaust gas purification having high durability and a method for producing the catalyst. The purpose is achieved by an oxidation catalyst for exhaust gas purification containing a refractory inorganic oxide, and a catalyst component and a metal component, which are supported on the refractory inorganic oxide, wherein the catalyst component is platinum, or platinum and palladium, and the metal component is one or more selected from the group consisting of magnesium, calcium, strontium and barium.
    Type: Application
    Filed: December 29, 2015
    Publication date: May 12, 2016
    Applicants: UMICORE SHOKUBAI JAPAN CO., LTD., UMICORE SHOKUBAI USA INC.
    Inventors: Naohiro KATO, Yosuke GOTO, Yuta AKASAKA
  • Patent number: 9254480
    Abstract: The purpose of the present invention is to provide an oxidation catalyst for exhaust gas purification having high durability and a method for producing the catalyst. The purpose is achieved by an oxidation catalyst for exhaust gas purification containing a refractory inorganic oxide, and a catalyst component and a metal component, which are supported on the refractory inorganic oxide, wherein the catalyst component is platinum, or platinum and palladium, and the metal component is one or more selected from the group consisting of magnesium, calcium, strontium and barium.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: February 9, 2016
    Assignees: Umicore Shokubai Japan Co., Ltd., Umicore Shokubai USA Inc.
    Inventors: Naohiro Kato, Yosuke Goto, Yuta Akasaka
  • Publication number: 20160001275
    Abstract: A catalyst that is not only capable of efficiently treating CO even at a low exhaust gas temperature, but also capable of exerting favorable CO purification efficiency in a low-temperature exhaust gas even in a case of being exposed for a long time to an engine exhaust gas that is a high temperature and contains HC, CO, NOx, water vapor and the like; and an exhaust gas treatment technique are described. The catalyst for purifying exhaust gas contains: a noble metal; an oxide containing as a base material A at least two kinds of elements selected from the group consisting of aluminum, zirconium and titanium; and an oxide containing as a base material B at least one kind of element selected from the group consisting of silicon, cerium, praseodymium and lanthanum; in which the base material A and the base material B satisfy a specific formula.
    Type: Application
    Filed: February 24, 2014
    Publication date: January 7, 2016
    Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Yosuke GOTO, Naohiro KATO, Yuta AKASAKA, Shota KAWASHIMA
  • Publication number: 20150375205
    Abstract: The present invention is to provide a NOx storage reduction catalyst for purifying exhaust gas capable of efficiently removing carbon monoxide (CO), a hydrocarbon (HC), and a nitrogen oxide (NOx), in particular NOx, which are harmful components contained in exhaust gas. The NOx storage reduction catalyst for purifying exhaust gas of the present invention is characterized by being obtained by using a complex oxide of strontium and cerium as a catalytic active component, in which the complex oxide of strontium and cerium adsorbs 1.0 mL or less of oxygen per gram in a 400° C. atmosphere, and sinters a precursor at 300° C. or more.
    Type: Application
    Filed: February 7, 2014
    Publication date: December 31, 2015
    Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Takahiro UMENO, Masaya HANZAWA, Yoshiyuki HAYASHI
  • Publication number: 20150367328
    Abstract: As a way to suppress deterioration of catalytic performance in an exhaust gas purification catalyst even after being exposed to an exhaust gas containing a phosphorus compound, an exhaust gas purification catalyst is provided. The catalyst purifies an exhaust gas containing a phosphorus compound, and the catalyst includes a catalyst layer containing rhodium (Rh), palladium (Pd), and either a ceria-zirconia-lanthana complex oxide or a ceria-zirconia-lanthana-yttria complex oxide as catalyst active components. Further, an average value of distances between Rh particles and the nearest Pd particles of the Rh and the Pd is within 4000 nm, a weight ratio of the Pd to the Rh is from 0.2 to 4.9, and a content rate of yttria in the ceria-zirconia-lanthana-yttria complex oxide is 19% by weight or less.
    Type: Application
    Filed: January 31, 2014
    Publication date: December 24, 2015
    Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Masanori IKEDA, Kazuyoshi KOMATA, Shigekazu MINAMI, Yuji OGINO, Hideki GOTO
  • Patent number: 8938953
    Abstract: A method of purifying an exhaust gas, includes: disposing a NOx trapping catalyst in an exhaust pipe of an internal combustion engine, the NOx trapping catalyst including: a metal substrate including cells, a corner portion of each of cells having an acute angle; and a catalyst layer supported in the metal substrate and including a noble metal, a heat-resistant inorganic oxide and a NOx trapping material, the catalyst layer having pores formed by addition of a pore formation promoting material, and the NOx trapping catalyst: adsorbing NOx in the exhaust gas when an exhaust air-fuel ratio is in a lean state; and desorbing and reducing the adsorbed NOx when the exhaust air-fuel ratio is in a stoichiometric state or a rich state; and removing the NOx by the exhaust air-fuel ratio being shifted between the lean state and the rich state.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: January 27, 2015
    Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, ICT Co., Ltd., Umicore Shokubai Japan Co., Ltd.
    Inventors: Kinichi Iwachido, Ken Tanabe, Takayuki Onodera, Masanori Ide, Hiroaki Ohhara, Mariko Ono, Akihisa Okumura, Masao Hori
  • Patent number: 8808653
    Abstract: PROBLEM The present invention is directed to provide a catalyst for purifying exhaust gas capable of maintaining a superior catalytic performance even when the catalyst is exposed to an exhaust gas at a high temperature of 800° C. or higher. SOLUTION The catalyst for purifying exhaust gas of the present invention comprises a catalytically active component containing a noble metal and a promoter containing an oxygen storage material both being supported on a carrier. The oxygen storage material comprises cerium, zirconium, and iron, and content of iron in the oxygen storage material is 0.01% by mass or more and less than 0.70% by mass (Fe2O3 conversion) relative to the total mass of the oxygen storage material. And the oxygen storage material is (a) a complex oxide or a solid solution of iron and a metal comprising cerium and zirconium; or (b) an iron is supported on a complex oxide or a solid solution of a metal comprising cerium and zirconium.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: August 19, 2014
    Assignees: Umicore Shokubai Japan Co., Ltd., Umicore Shokubai USA Inc.
    Inventors: Kosuke Mikita, Takahiro Ikegami, Masanori Ikeda, Hideki Goto