Patents by Inventor Kazuhiko Amakawa
Kazuhiko Amakawa 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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Publication number: 20240091756Abstract: A process for producing an eggshell catalyst, comprising the coating of the outer surface of a geometric shaped support body with a catalytically active multielement oxide or a powder P, wherein the powder P, after being coated, is converted by thermal treatment to a catalytically active multielement oxide, and one or more liquid binders, wherein the coating is conducted in a horizontal mixer and the Froude number during the coating in the horizontal mixer is from 0.0160 to 0.1200.Type: ApplicationFiled: October 20, 2021Publication date: March 21, 2024Inventors: Samira PARISHAN, Kazuhiko AMAKAWA, Ulrich HAMMON, Christian WALSDORFF, Necip NESELI, Markus MUEHL
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Publication number: 20230234030Abstract: A tableted catalyst support, characterized by an alpha-alumina content of at least 85 wt.-%, a pore volume of at least 0.40 mL/g, as determined by mercury porosimetry, and a BET surface area of 0.5 to 5.0 m2/g. The tableted catalyst support is an alpha-alumina catalyst support obtained with high geometrical precision and displaying a high overall pore volume, thus allowing for impregnation with a high amount of silver, while exhibiting a surface area sufficiently large so as to provide optimal dispersion of catalytically active species, in particular metal species. The invention further provides a process for producing a tableted alpha-alumina catalyst support, which comprises i) forming a free-flowing feed mixture comprising, based on inorganic solids content, at least 50 wt.-% of a transition alumina; ii) tableting the free-flowing feed mixture to obtain a compacted body; and iii) heat treating the compacted body at a temperature of at least 1100° C., preferably at least 1300° C.Type: ApplicationFiled: June 25, 2021Publication date: July 27, 2023Inventors: Sung Yeun CHOI, Andrey KARPOV, Christian WALSDORFF, Nicolas DUYCKAERTS, Kazuhiko AMAKAWA, Patrick HUBACH, Karl C. KHARAS
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Publication number: 20230144424Abstract: A process for producing a catalytically active multielement oxide comprising the elements Mo, W, V and Cu, wherein at least one source of the elemental constituents W of the multielement oxide is used to produce an aqueous solution, the resultant aqueous solution is admixed with sources of the elemental constituents Mo and V of the multielement oxide, drying of the resultant aqueous solution produces a powder P, the resultant powder P is optionally used to produce geometric shaped precursor bodies, and the powder P is or the geometric shaped precursor bodies are subjected to thermal treatment to form the catalytically active composition, wherein the aqueous solution used for drying comprises from 1.6% to 5.0% by weight of W and from 7.2% to 26.0% by weight of Mo, based in each case on the total amount of aqueous solution.Type: ApplicationFiled: April 12, 2021Publication date: May 11, 2023Inventors: Kazuhiko AMAKAWA, Samira PARISHAN, Christian WALSDORFF, Patrick HUBACH, Tobias WEINLAND
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Publication number: 20220259131Abstract: A process for the continuous production of either acrolein or acrylic acid as the target product from propene comprising a catalyzed gas phase partial oxidation of propene to yield a product gas containing the target product, transferring the target product in a separating zone from the product gas into the liquid phase and conducting out of the separating zone a stream of residual gas the major portion of which is returned into the partial oxidation and the remaining portion of said stream is purged from the process as off-gas from which synthesis gas can be produced or which can be added to synthesis gas produced otherwise.Type: ApplicationFiled: July 14, 2020Publication date: August 18, 2022Inventors: Kazuhiko AMAKAWA, Lukas SCHULZ, Michael BENDER, Klaus Joachim MUELLER-ENGEL, Christian WALSDORFF, Signe UNVERRICHT
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Patent number: 10682631Abstract: Multimetal oxide composition comprising Mo, Bi, Fe, Cu and one or more than one of the elements Co and Ni and use thereof.Type: GrantFiled: January 17, 2019Date of Patent: June 16, 2020Assignee: BASF SEInventors: Kazuhiko Amakawa, Christian Walsdorff, Klaus Joachim Mueller-Engel, Cornelia Katharina Dobner, Ulrich Hammon
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Publication number: 20190224651Abstract: Multimetal oxide composition comprising Mo, Bi, Fe, Cu and one or more than one of the elements Co and Ni and use thereof.Type: ApplicationFiled: January 17, 2019Publication date: July 25, 2019Applicant: BASF SEInventors: Kazuhiko AMAKAWA, Christian WALSDORFF, Klaus Joachim MUELLER-ENGEL, Cornelia Katharina DOBNER, Ulrich HAMMON
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Publication number: 20180147561Abstract: Process for producing a multimetal oxide catalyst comprising molybdenum, chromium and at least one further metal by mixing of a pulverulent multimetal oxide comprising molybdenum and at least one further metal but no chromium with pulverulent chromium(III) oxide and thermal treatment of the resulting pulverulent mixture in the presence of oxygen at a temperature in the range from 350° C. to 650° C.Type: ApplicationFiled: May 4, 2016Publication date: May 31, 2018Inventors: Jan UNGELENK, Ulrich HAMMON, Kazuhiko AMAKAWA, Philipp GRÜNE, Christian WALSDORFF
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Patent number: 9695099Abstract: The present invention relates to a process for preparing acrylic acid from acetic acid and formaldehyde, which comprises (a) provision of a stream S1 comprising acetic acid and formaldehyde, where the molar ratio of acetic acid to formaldehyde in the stream S1 is in the range from 0.5:1 to 2:1; (b) contacting of the stream S1 with an aldol condensation catalyst comprising vanadium, phosphorus and oxygen to give a stream S2 comprising acrylic acid, where, in (b), the space velocity WHSV is in the range from 0.35 to 7.0 kg/kg/h.Type: GrantFiled: December 2, 2015Date of Patent: July 4, 2017Assignee: BASF SEInventors: Yong Liu, Martin Dieterle, Nicolai Tonio Woerz, Andrei-Nicolae Parvulescu, Michael Lejkowski, Johannes Lieberknecht, Christian Walsdorff, Kazuhiko Amakawa
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Patent number: 9540305Abstract: A process for preparing acrylic acid, comprising (i) providing a stream S4 comprising a formaldehyde source and acetic acid; (ii) contacting stream S4 with an aldol condensation catalyst comprising a zeolitic material comprising aluminum in the framework structure to obtain a stream S6 comprising acrylic acid, the framework structure of the zeolitic material in (ii) comprising YO2 and Al2O3, and Y being a tetravalent element; where the total content of alkali metal and alkaline earth metal in the zeolitic material in (ii), calculated as alkali metal oxide and alkaline earth metal oxide, is from 0% to 0.1% by weight, based in each case on the total weight of the zeolitic material, and where the aldol condensation catalyst in (ii) comprises, outside the framework structure of the zeolitic material present therein, from 0% to 1% by weight of vanadium, based on vanadium as vanadium(V) oxide.Type: GrantFiled: May 28, 2015Date of Patent: January 10, 2017Assignee: BASF SEInventors: Andrei-Nicolae Parvulescu, Armin Lange De Oliveira, Stephan A. Schunk, Nicolai Tonio Woerz, Marco Hartmann, Kazuhiko Amakawa, Michael Goebel, Yong Liu, Michael Lejkowski
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Patent number: 9446390Abstract: The present invention relates to a process for preparing acrylic acid comprising (i) providing a stream comprising a formaldehyde source and acetic acid and (ii) contacting this stream with an aldol condensation catalyst comprising a zeolitic material, wherein the framework structure of the zeolitic material in (ii) includes Si and O, and has a molar Al:Si ratio of 0:1 to 0.001:1, and wherein the framework structure of the zeolitic material in (ii), in addition to Si and any Al, comprises one or more elements selected from the group consisting of tetravalent elements Y other than Si and trivalent elements X other than Al.Type: GrantFiled: May 28, 2015Date of Patent: September 20, 2016Assignee: BASF SEInventors: Andrei-Nicolae Parvulescu, Armin Lange De Oliveira, Michael Lejkowski, Nicolai Tonio Woerz, Marco Hartmann, Kazuhiko Amakawa, Michael Goebel, Ulrich Mueller, Mathias Feyen, Yong Liu
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Publication number: 20160152541Abstract: The present invention relates to a process for preparing acrylic acid from acetic acid and formaldehyde, which comprises (a) provision of a stream S1 comprising acetic acid and formaldehyde, where the molar ratio of acetic acid to formaldehyde in the stream S1 is in the range from 0.5:1 to 2:1; (b) contacting of the stream S1 with an aldol condensation catalyst comprising vanadium, phosphorus and oxygen to give a stream S2 comprising acrylic acid, where, in (b), the space velocity WHSV is in the range from 0.35 to 7.0 kg/kg/h.Type: ApplicationFiled: December 2, 2015Publication date: June 2, 2016Applicant: BASF SEInventors: Yong LIU, Martin DIETERLE, Nicolai Tonio WOERZ, Andrei-Nicolae PARVULESCU, Michael LEJKOWSKI, Johannes LIEBERKNECHT, Christian WALSDORFF, Kazuhiko AMAKAWA
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Publication number: 20150344394Abstract: A process for preparing acrylic acid, comprising (i) providing a stream S4 comprising a formaldehyde source and acetic acid; (ii) contacting stream S4 with an aldol condensation catalyst comprising a zeolitic material comprising aluminum in the framework structure to obtain a stream S6 comprising acrylic acid, the framework structure of the zeolitic material in (ii) comprising YO2 and Al2O3, and Y being a tetravalent element; where the total content of alkali metal and alkaline earth metal in the zeolitic material in (ii), calculated as alkali metal oxide and alkaline earth metal oxide, is from 0% to 0.1% by weight, based in each case on the total weight of the zeolitic material, and where the aldol condensation catalyst in (ii) comprises, outside the framework structure of the zeolitic material present therein, from 0% to 1% by weight of vanadium, based on vanadium as vanadium(V) oxide.Type: ApplicationFiled: May 28, 2015Publication date: December 3, 2015Applicant: BASF SEInventors: Andrei-Nicolae PARVULESCU, Armin LANGE DE OLIVEIRA, Stephan A. SCHUNK, Nicolai Tonio WOERZ, Marco HARTMANN, Kazuhiko AMAKAWA, Michael GOEBEL, Yong LIU, Michael LEJKOWSKI
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Publication number: 20150343431Abstract: The present invention relates to a process for preparing acrylic acid comprising (i) providing a stream comprising a formaldehyde source and acetic acid and (ii) contacting this stream with an aldol condensation catalyst comprising a zeolitic material, wherein the framework structure of the zeolitic material in (ii) includes Si and O, and has a molar Al:Si ratio of 0:1 to 0.001:1, and wherein the framework structure of the zeolitic material in (ii), in addition to Si and any Al, comprises one or more elements selected from the group consisting of tetravalent elements Y other than Si and trivalent elements X other than Al.Type: ApplicationFiled: May 28, 2015Publication date: December 3, 2015Applicant: BASF SEInventors: Andrei-Nicolae PARVULESCU, Armin LANGE DE OLIVEIRA, Michael LEJKOWSKI, Nicolai Tonio WOERZ, Marco HARTMANN, Kazuhiko AMAKAWA, Michael GOEBEL, Ulrich MUELLER, Mathias FEYEN, Yong LIU
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Patent number: 8119556Abstract: A method of producing a primary amine by the hydrogenation of a nitrile in the presence of a hydrogenation catalyst. The hydrogenation catalyst contains at least one metal selected from the group consisting of nickel, cobalt and iron. Before use in the hydrogenation of nitrile, the hydrogenation catalyst is pretreated with at least one treating agent selected from the group consisting of hydrocarbons, alcohols, ethers, esters and carbon monoxide at 150 to 500° C.Type: GrantFiled: July 14, 2010Date of Patent: February 21, 2012Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kazuhiko Amakawa, Yoshiaki Yamamoto
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Patent number: 7915452Abstract: A method of producing xylylenediamine from xylene. In the method, xylene is converted into dicyanobenzene by ammoxidation. The produced dicyanobenzene is extracted into an organic solvent. The extract is then distilled to separate dicyanobenzene from the organic solvent. After added with a solvent, the separated dicyanobenzene is hydrogenated in a liquid phase. Finally, the hydrogenation product is purified by distillation to obtain a highly pure xylylenediamine. The method is conducted in a simple and low energy-consuming process.Type: GrantFiled: June 22, 2005Date of Patent: March 29, 2011Assignee: Mitsubishi Gas Chemical Company, Inc.Inventor: Kazuhiko Amakawa
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Publication number: 20100279857Abstract: A method of producing a primary amine by the hydrogenation of a nitrile in the presence of a hydrogenation catalyst. The hydrogenation catalyst contains at least one metal selected from the group consisting of nickel, cobalt and iron. Before use in the hydrogenation of nitrile, the hydrogenation catalyst is pretreated with at least one treating agent selected from the group consisting of hydrocarbons, alcohols, ethers, esters and carbon monoxide at 150 to 500° C.Type: ApplicationFiled: July 14, 2010Publication date: November 4, 2010Inventors: Kazuhiko AMAKAWA, Yoshiaki Yamamoto
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Patent number: 7785556Abstract: A method of recovering ammonia by the distillation of an aqueous solution containing ammonia, carbon dioxide and hydrogen cyanide. The distillation is conducted using a distillation apparatus having at least its portion which comes into contact with the aqueous solution made of an alloy 1 or alloy 2. The alloy 1 contains 3% by weight or more of molybdenum, 15% by weight or more of nickel and 15% by weight or more of chromium. The alloy 2 contains 1% by weight or more of molybdenum, 9% by weight or less of nickel and 20% by weight or more of chromium. The use of the alloy 1 or alloy 2 prevents the corrosion of the distillation apparatus and enables the stable recovery of ammonia for a long period of time.Type: GrantFiled: October 26, 2007Date of Patent: August 31, 2010Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kazuhiko Amakawa, Fumio Tanaka, Takuji Shitara
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Patent number: 7767859Abstract: A method of producing a primary amine by the hydrogenation of a nitrile in the presence of a hydrogenation catalyst. The hydrogenation catalyst contains at least one metal selected from the group consisting of nickel, cobalt and iron. Before use in the hydrogenation of nitrile, the hydrogenation catalyst is pretreated with at least one treating agent selected from the group consisting of hydrocarbons, alcohols, ethers, esters and carbon monoxide at 150 to 500° C.Type: GrantFiled: August 9, 2007Date of Patent: August 3, 2010Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kazuhiko Amakawa, Yoshiaki Yamamoto
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Patent number: 7588721Abstract: A solid xylylenediamine solidified in a container is extremely excellent in storage stability as compared with a liquid xylylenediamine, and is less degraded by discoloration even when stored in an atmosphere containing oxygen. By charging a liquid xylylenediamine into a container, solidifying the liquid xylylenediamine into a solid xylylenediamine in the container under cooling without delay after the charging, and storing the solid xylylenediamine in the container while maintaining the xylylenediamine in a solid state, the xylylenediamine is stored for a long period of time without causing deterioration of quality such as discoloration.Type: GrantFiled: August 29, 2007Date of Patent: September 15, 2009Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kazumi Tanaka, Kazuhiko Amakawa
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Publication number: 20090192334Abstract: A method of producing xylylenediamine from xylene. In the method, xylene is converted into dicyanobenzene by ammoxidation. The produced dicyanobenzene is extracted into an organic solvent. The extract is then distilled to separate dicyanobenzene from the organic solvent. After added with a solvent, the separated dicyanobenzene is hydrogenated in a liquid phase. Finally, the hydrogenation product is purified by distillation to obtain a highly pure xylylenediamine. The method is conducted in a simple and low energy-consuming process.Type: ApplicationFiled: June 22, 2005Publication date: July 30, 2009Inventor: Kazuhiko Amakawa