Patents by Inventor Yukitaka Wada
Yukitaka Wada 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).
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Patent number: 10071370Abstract: Provided is a method of reactivating a used titania catalyst for hydrogenation treatment, capable of improving the catalytic activity of the used titania catalyst for hydrogenation treatment that is obtained by supporting a catalyst component on a titania support and exhibits reduced catalytic activity after having been used for hydrogenation treatment of a hydrocarbon oil, to a level comparable to that of a newly prepared fresh titania catalyst before use.Type: GrantFiled: May 16, 2013Date of Patent: September 11, 2018Assignee: CHIYODA CORPORATIONInventors: Shinichi Inoue, Yukitaka Wada, Akihiro Muto
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Patent number: 9776180Abstract: Provided are: a hydrotreating catalyst for hydrocarbon oil having a hydrodesulfurization activity additionally improved by: simultaneously and continuously adding an aqueous solution of an acidic compound containing titanium and an aqueous solution containing an alkaline compound to a hydrosol containing an alumina hydrate particle at a temperature of 10 to 100° C. and a pH of 4.5 to 6.5; washing the resultant to remove a contaminating ion; forming the washed product after dehydration so as to have a moisture content at which it is formable; drying the resultant; impregnating the dried product with a catalytic component aqueous solution containing at least one kind of periodic table group 6 metal compound, at least one kind of periodic table group 8-10 metal compound, at least one kind of phosphorus compound, and at least one kind of saccharide; and drying the resultant; a manufacturing method for the catalyst; and a hydrodesulfurization treatment method for hydrocarbon oil using the catalyst.Type: GrantFiled: March 22, 2011Date of Patent: October 3, 2017Assignee: CHIYODA CORPORATIONInventors: Shinichi Inoue, Yukitaka Wada, Akihiro Mutou, Takeo Ono
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Patent number: 9463452Abstract: A hydrotreating catalyst for hydrocarbon oil having a hydrodesulfurization activity additionally improved by: simultaneously and continuously adding an aqueous solution of an acidic compound containing titanium and an aqueous solution containing an alkaline compound to a hydrosol containing an alumina hydrate particle at a temperature of 10 to 100° C. and a pH of 4.5 to 6.5; washing the resultant to remove a contaminating ion; forming the washed product after dehydration so as to have a moisture content at which it is formable; drying the resultant; impregnating the dried product with a catalytic component aqueous solution containing periodic table group 6 metal compound, periodic table group 8-10 metal compound, phosphorus compound, and saccharide; and drying the resultant; a manufacturing method for the catalyst; and a hydrodesulfurization treatment method for hydrocarbon oil using the catalyst.Type: GrantFiled: April 16, 2014Date of Patent: October 11, 2016Assignee: CHIYODA CORPORATIONInventors: Shinichi Inoue, Yukitaka Wada, Akihiro Mutou, Takeo Ono
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Publication number: 20150202614Abstract: Provided is a method of reactivating a used titania catalyst for hydrogenation treatment, capable of improving the catalytic activity of the used titania catalyst for hydrogenation treatment that is obtained by supporting a catalyst component on a titania support and exhibits reduced catalytic activity after having been used for hydrogenation treatment of a hydrocarbon oil, to a level comparable to that of a newly prepared fresh titania catalyst before use.Type: ApplicationFiled: May 16, 2013Publication date: July 23, 2015Applicant: CHIYODA CORPORATIONInventors: Shinichi Inoue, Yukitaka Wada, Akihiro Mutou
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Publication number: 20140224708Abstract: A hydrotreating catalyst for hydrocarbon oil having a hydrodesulfurization activity additionally improved by: simultaneously and continuously adding an aqueous solution of an acidic compound containing titanium and an aqueous solution containing an alkaline compound to a hydrosol containing an alumina hydrate particle at a temperature of 10 to 100° C. and a pH of 4.5 to 6.5; washing the resultant to remove a contaminating ion; forming the washed product after dehydration so as to have a moisture content at which it is formable; drying the resultant; impregnating the dried product with a catalytic component aqueous solution containing periodic table group 6 metal compound, periodic table group 8-10 metal compound, phosphorus compound, and saccharide; and drying the resultant; a manufacturing method for the catalyst; and a hydrodesulfurization treatment method for hydrocarbon oil using the catalyst.Type: ApplicationFiled: April 16, 2014Publication date: August 14, 2014Applicant: CHIYODA CORPORATIONInventors: Shinichi INOUE, Yukitaka WADA, Akihiro MUTOU, Takeo ONO
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Publication number: 20120318717Abstract: Provided are: a hydrotreating catalyst for hydrocarbon oil having a hydrodesulfurization activity additionally improved by: simultaneously and continuously adding an aqueous solution of an acidic compound containing titanium and an aqueous solution containing an alkaline compound to a hydrosol containing an alumina hydrate particle at a temperature of 10 to 100° C. and a pH of 4.5 to 6.5; washing the resultant to remove a contaminating ion; forming the washed product after dehydration so as to have a moisture content at which it is formable; drying the resultant; impregnating the dried product with a catalytic component aqueous solution containing at least one kind of periodic table group 6 metal compound, at least one kind of periodic table group 8-10 metal compound, at least one kind of phosphorus compound, and at least one kind of saccharide; and drying the resultant; a manufacturing method for the catalyst; and a hydrodesulfurization treatment method for hydrocarbon oil using the catalyst.Type: ApplicationFiled: March 22, 2011Publication date: December 20, 2012Inventors: Shinichi Inoue, Yukitaka Wada, Akihiro Mutou, Takeo Ono
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Patent number: 7691781Abstract: This invention provides layered porous titanium oxide comprising an inorganic oxide as a core and titanium oxide deposited on the surface of the inorganic oxide, wherein the titanium localization index B/A represented by the ratio of the proportion of titanium (Ti) to the sum of the constituent metal (M) of the inorganic oxide and titanium (Ti) determined by X-ray photoelectron spectroscopy (XPS) [B=Ti XPS/(Ti XPS+M XPS)] to the bulk mixing molar ratio of titanium (Ti) to the sum of the constituent metal (M) of the inorganic oxide and titanium (Ti) [A=Ti/(Ti+M)] is 1.6 or more and the titanium oxide is deposited on the surface of the inorganic oxide so as to be chemically and/or microscopically united to the inorganic oxide and also provides a process for producing the same and a catalyst comprising the same. The layered porous titanium oxide of this invention has a regulated pore structure, a large specific surface area, and excellent mechanical strength and is useful as a catalyst or a catalyst carrier.Type: GrantFiled: December 25, 2003Date of Patent: April 6, 2010Assignee: Chiyoda CorporationInventors: Shinichi Inoue, Akihiro Mutou, Yukitaka Wada, Hidehiko Kudou, Tateo Ono, Hisashi Nomura
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Publication number: 20070140952Abstract: This invention provides layered porous titanium oxide comprising an inorganic oxide as a core and titanium oxide deposited on the surface of the inorganic oxide, wherein the titanium localization index B/A represented by the ratio of the proportion of titanium (Ti) to the sum of the constituent metal (M) of the inorganic oxide and titanium (Ti) determined by X-ray photoelectron spectroscopy (XPS) [B=TiXPS/(TiXPS+MXPS)] to the bulk mixing molar ratio of titanium (Ti) to the sum of the constituent metal (M) of the inorganic oxide and titanium (Ti) [A=Ti/(Ti+M)] is 1.6 or more and the titanium oxide is deposited on the surface of the inorganic oxide so as to be chemically and/or microscopically united to the inorganic oxide and also provides a process for producing the same and a catalyst comprising the same. The layered porous titanium oxide of this invention has a regulated pore structure, a large specific surface area, and excellent mechanical strength and is useful as a catalyst or a catalyst carrier.Type: ApplicationFiled: December 25, 2003Publication date: June 21, 2007Inventors: Shinichi Inoue, Akihiro Mutou, Yukitaka Wada, Hidehiko Kudou, Tateo Ono, Hisashi Nomura
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Patent number: 6387843Abstract: A method of preparing a catalyst, including molding a mixture of magnesium oxide with a binder selected from carbon, fatty acids having 12-22 carbon atoms, magnesium salts of fatty acids having 12-22 carbon atoms, carboxymethyl cellulose, a magnesium salt of carboxymethyl cellulose and polyvinyl alcohol and calcining the molded mixture to obtain a carrier having a specific surface area of 5 m2/g of less. The carrier is impregnated with an aqueous solution containing Rh and/or Ru compounds for loading a catalytic metal component and then dried and calcined. The catalyst is used for reforming a lower hydrocarbon gas with steam and carbon dioxide or with carbon dioxide to produce a synthesis gas.Type: GrantFiled: April 5, 2001Date of Patent: May 14, 2002Assignee: Chiyoda CorporationInventors: Fuyuki Yagi, Atsuro Nagumo, Yukitaka Wada, Mitsunori Shimura
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Patent number: 6376423Abstract: Disclosed are a catalyst for producing a synthesis gas using a carbon-containing organic compound as a raw material and a process for producing carbon monoxide. The catalyst for producing a synthesis gas is composed of a carrier formed of a metal oxide and at least one catalytic metal selected from rhodium, ruthenium, iridium, palladium and platinum and supported on the carrier and is characterized in that the catalyst has a specific surface area of 25 m2/g or less, in that the electronegativity of the metal ion of the carrier metal oxide is 13.0 or less and in that the amount of the supported catalytic metal is 0.0005-0.1 mole %, in terms of a metal, based on the carrier metal oxide.Type: GrantFiled: March 11, 1999Date of Patent: April 23, 2002Assignee: Chiyoda CorporationInventors: Fuyuki Yagi, Atsuro Nagumo, Yukitaka Wada, Mitsunori Shimura, Sachio Asaoka, Shuhei Wakamatsu
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Patent number: 6340437Abstract: Disclosed is a process for producing a synthesis gas by an autothermal reforming method including a step of partially oxidizing a carbon-containing organic compound to produce a high temperature mixed gas, and a synthesis producing step of reacting the unreacted carbon-containing organic compound contained in the high temperature mixed gas with carbon dioxide and/or steam, wherein a catalyst having a considerably suppressed carbon deposition activity is used as a catalyst for the synthesis gas producing step. The catalyst is characterized in that the catalyst comprises a carrier formed of a metal oxide, and at least one catalytic metal selected from rhodium, ruthenium, iridium, palladium and platinum and supported on the carrier, in that the catalyst has a specific surface area of 25 m2/g or less, in that metal ion of the carrier metal oxide has electronegativity of 13.0 or less, and in that the amount of the catalytic metal supported is 0.0005-0.Type: GrantFiled: March 11, 1999Date of Patent: January 22, 2002Assignee: Chiyoda CorporationInventors: Fuyuki Yagi, Atsuro Nagumo, Yukitaka Wada, Mitsunori Shimura, Sachio Asaoka, Shuhei Wakamatsu
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Patent number: 6312660Abstract: Disclosed is a process for producing a synthesis gas by reacting a carbon-containing organic compound with steam and/or carbon dioxide using a catalyst whose carbon deposition activity is considerably suppressed. The catalyst is characterized in that it comprises a carrier formed of a metal oxide, and at least one catalytic metal selected from rhodium, ruthenium, iridium, palladium and platinum and supported on the carrier, in that the catalyst has a specific surface area of 25 m2/g or less, in that the electronegativity of the metal ion of the carrier metal oxide is 13.0 or less and in that the amount of the catalytic metal is 0.0005-0.1 mole %, in terms of metal, based on the carrier metal oxide.Type: GrantFiled: March 11, 1999Date of Patent: November 6, 2001Assignee: Chiyoda CorporationInventors: Fuyuki Yagi, Atsuro Nagumo, Yukitaka Wada, Mitsunori Shimura, Sachio Asaoka, Shuhei Wakamatsu
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Publication number: 20010010808Abstract: Disclosed are a catalyst for producing a synthesis gas using a carbon-containing organic compound as a raw material and a process for producing carbon monoxide. The catalyst for producing a synthesis gas is composed of a carrier formed of a metal oxide and at least one catalytic metal selected from rhodium, ruthenium, iridium, palladium and platinum and supported on the carrier and is characterized in that the catalyst has a specific surface area of 25 m2/g or less, in that the electronegativity of the metal ion of the carrier metal oxide is 13.0 or less and in that the amount of the supported catalytic metal is 0.0005-0.1 mole %, in terms of a metal, based on the carrier metal oxide.Type: ApplicationFiled: March 11, 1999Publication date: August 2, 2001Applicant: Fuyuki YagiInventors: FUYUKI YAGI, ATSURO NAGUMO, YUKITAKA WADA, MITSUNORI SHIMURA, SACHIO ASAOKA, SHUHEI WAKAMATSU