Patents by Inventor Masatoshi Kaneta
Masatoshi Kaneta 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: 11446643Abstract: A method for producing a catalyst, including a slurry preparation step of preparing a slurry comprising a Mo compound, an Fe compound, a Bi compound, and an additive having a decomposition temperature of 500° C. or less; a drying step of drying the slurry to obtain a dried material; and a calcination step of calcining the dried material to obtain a calcined material, wherein the calcination step comprises a step of raising temperature of a calcination atmosphere to a predetermined temperature, and a temperature raising rate is 10° C./min or less at least at a temperature equal to or lower than the decomposition temperature of the additive.Type: GrantFiled: June 18, 2018Date of Patent: September 20, 2022Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Kazunari Morii, Akiyoshi Fukuzawa, Masatoshi Kaneta
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Publication number: 20210146343Abstract: A method for producing a catalyst, including a slurry preparation step of preparing a slurry comprising a Mo compound, an Fe compound, a Bi compound, and an additive having a decomposition temperature of 500° C. or less; a drying step of drying the slurry to obtain a dried material; and a calcination step of calcining the dried material to obtain a calcined material, wherein the calcination step comprises a step of raising temperature of a calcination atmosphere to a predetermined temperature, and a temperature raising rate is 10° C./min or less at least at a temperature equal to or lower than the decomposition temperature of the additive.Type: ApplicationFiled: June 18, 2018Publication date: May 20, 2021Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Kazunari MORII, Akiyoshi FUKUZAWA, Masatoshi KANETA
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Publication number: 20190001309Abstract: A catalyst for a fluidized bed ammoxidation reaction containing silica and a metal oxide, wherein a composite of the silica and the metal oxide is represented by the following formula (1). Mo12BiaFebNicCodCeeCrfXgOh/(SiO2)A ??(1) (in formula (1), X represents at least one element selected from the group consisting of K, Rb, and Cs, 0.1?a?1, 1?b?3, 1?c?6.5, 1?d?6.5, 0.2?e?1.2, f?0.05, and 0.05?g?1 are satisfied, h satisfies valences of constituent elements excluding silica, A represents a content of silica (% by mass) and satisfies 35?A?48, and values of ?, ?, and ? calculated from the following expressions (2), (3), and (4) satisfy 0.03???0.08, 0.2???0.4, and 0.5???2.) ?=1.5a/(1.5(b+f)+c+d) ??(2) ?=1.Type: ApplicationFiled: January 23, 2017Publication date: January 3, 2019Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Akiyoshi FUKUZAWA, Masatoshi KANETA
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Publication number: 20180318803Abstract: A catalyst for a fluidized bed ammoxidation reaction containing silica and a metal oxide, wherein a composite of the silica and the metal oxide is represented by the following formula (1). Mo12BiaFebNicMgdCoeCefCrgZnhXiOj/(SiO2)A ??(1) (in formula (1), X is selected from the group consisting of K, Rb, and Cs, a, b, c, d, e, f, g, h, and i, each satisfy 0.1?a?1, 0.5?b?4, 0.5?c?6.5, 0.2?d?2.5, 0.5?e?7, 0.2?f?1.2, g?0.05, n?4, and 0.05?i?1, A represents a content of silica (% by mass) in the composite and satisfies 35?A?48, and values of ?, ?, and ? calculated by the following expressions (2), (3), and (4) satisfy 0.03???0.12, 0.1???0.7, and 0.2???4.) ?=1.5a/(1.5(b+g)+c+d+e+h) ??(2) ?=1.Type: ApplicationFiled: January 23, 2017Publication date: November 8, 2018Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Akiyoshi FUKUZAWA, Masatoshi KANETA
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Patent number: 9731285Abstract: An object of the present invention is to provide a process for producing an oxide catalyst used in a vapor-phase catalytic oxidation or vapor-phase catalytic ammoxidation reaction of propane or isobutene, which enables a catalyst demonstrating favorable yield to be stably produced. According to the present invention, there is provided a process for producing an oxide catalyst used in a vapor-phase catalytic oxidation or vapor-phase catalytic ammoxidation reaction of propane or isobutane, comprising the steps of: (i) preparing a catalyst raw material mixture containing Mo, V and Nb and satisfying the relationships of 0.1?a?1 and 0.01?b?1 when atomic ratios of V and Nb to one atom of Mo are defined as a and b, respectively; (ii) drying the catalyst raw material mixture; and (iii) calcining a particle, in which a content of the particle having a particle diameter of 25 ?m or less is 20% by mass or less and a mean particle diameter is from 35 to 70 ?m, in an inert gas atmosphere.Type: GrantFiled: December 11, 2008Date of Patent: August 15, 2017Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Eri Tateno, Masatoshi Kaneta
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Patent number: 9643918Abstract: Disclosed is a calcination apparatus, including: a calcination tube having open ends at both terminals; a pair of hoods, each hood covering each open end of the calcination tube; and a pair of rings, each ring sealing a gap between the calcination tube and the hood, wherein the rings are directly or indirectly fixed on an outer surface of the calcination tube; a groove is provided along a circumferential direction of the ring at a contact surface side between the ring and the hood; a sealed chamber surrounded by the hood and the groove is formed; and both the calcination tube and the rings rotate in a circumferential direction of the calcination tube while keeping the hood in contact with both sides of the groove.Type: GrantFiled: October 2, 2015Date of Patent: May 9, 2017Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Eri Tateno, Masatoshi Kaneta, Toshihiko Fukuzono, Haruhiko Watanabe
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Publication number: 20160023994Abstract: Disclosed is a calcination apparatus, including: a calcination tube having open ends at both terminals; a pair of hoods, each hood covering each open end of the calcination tube; and a pair of rings, each ring sealing a gap between the calcination tube and the hood, wherein the rings are directly or indirectly fixed on an outer surface of the calcination tube; a groove is provided along a circumferential direction of the ring at a contact surface side between the ring and the hood; a sealed chamber surrounded by the hood and the groove is formed; and both the calcination tube and the rings rotate in a circumferential direction of the calcination tube while keeping the hood in contact with both sides of the groove.Type: ApplicationFiled: October 2, 2015Publication date: January 28, 2016Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Eri TATENO, Masatoshi KANETA, Toshihiko FUKUZONO, Haruhiko WATANABE
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Patent number: 9180427Abstract: Disclosed is a calcination apparatus, including: a calcination tube having open ends at both terminals; a pair of hoods, each hood covering each open end of the calcination tube; and a pair of rings, each ring sealing a gap between the calcination tube and the hood, wherein the rings are directly or indirectly fixed on an outer surface of the calcination tube; a groove is provided along a circumferential direction of the ring at a contact surface side between the ring and the hood; a sealed chamber surrounded by the hood and the groove is formed; and both the calcination tube and the rings rotate in a circumferential direction of the calcination tube while keeping the hood in contact with both sides of the groove.Type: GrantFiled: February 10, 2012Date of Patent: November 10, 2015Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Eri Tateno, Masatoshi Kaneta, Toshihiko Fukuzono, Haruhiko Watanabe
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Publication number: 20140024851Abstract: Disclosed is a calcination apparatus, including: a calcination tube having open ends at both terminals; a pair of hoods, each hood covering each open end of the calcination tube; and a pair of rings, each ring sealing a gap between the calcination tube and the hood, wherein the rings are directly or indirectly fixed on an outer surface of the calcination tube; a groove is provided along a circumferential direction of the ring at a contact surface side between the ring and the hood; a sealed chamber surrounded by the hood and the groove is formed; and both the calcination tube and the rings rotate in a circumferential direction of the calcination tube while keeping the hood in contact with both sides of the groove.Type: ApplicationFiled: February 10, 2012Publication date: January 23, 2014Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Eri Tateno, Masatoshi Kaneta, Toshihiko Fukuzono, Haruhiko Watanabe
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Publication number: 20100286432Abstract: An object of the present invention is to provide a process for producing an oxide catalyst used in a vapor-phase catalytic oxidation or vapor-phase catalytic ammoxidation reaction of propane or isobutene, which enables a catalyst demonstrating favorable yield to be stably produced. According to the present invention, there is provided a process for producing an oxide catalyst used in a vapor-phase catalytic oxidation or vapor-phase catalytic ammoxidation reaction of propane or isobutane, comprising the steps of: (i) preparing a catalyst raw material mixture containing Mo, V and Nb and satisfying the relationships of 0.1?a?1 and 0.01?b?1 when atomic ratios of V and Nb to one atom of Mo are defined as a and b, respectively; (ii) drying the catalyst raw material mixture; and (iii) calcining a particle, in which a content of the particle having a particle diameter of 25 ?m or less is 20% by mass or less and a mean particle diameter is from 35 to 70 ?m, in an inert gas atmosphere.Type: ApplicationFiled: December 11, 2008Publication date: November 11, 2010Inventors: Eri Tateno, Masatoshi Kaneta
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Patent number: 6143690Abstract: An ammoxidation catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane, which comprises a compound oxide and a silica carrier having supported thereon the compound oxide, wherein the compound oxide comprises molybdenum, vanadium, niobium and at least one element selected from the group consisting of tellurium and antimony, and wherein the alkali metal content of the ammoxidation catalyst is extremely small or substantially zero, and a process for producing acrylonitrile or methacrylonitrile by using the ammoxidation catalyst. By the use of the ammoxidation catalyst of the present invention, acrylonitrile or methacrylonitrile can be produced in high yield, as compared to the yield achieved by conventional ammoxidation catalysts containing a silica carrier.Type: GrantFiled: May 5, 1999Date of Patent: November 7, 2000Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Satoru Komada, Masatoshi Kaneta
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Patent number: 6036880Abstract: Disclosed is a niobium(Nb)-containing aqueous solution for use in producing a Nb-containing oxide catalyst, wherein the oxide catalyst comprises an oxide of a plurality of active component elements including Nb and is for use in a catalytic oxidation or ammoxidation of propane or isobutane in the gaseous phase, and wherein the oxide catalyst is prepared by a process comprising mixing the Nb-containing aqueous solution with (an) aqueous mixture(s) containing compounds of active component elements of the oxide catalyst other than Nb, to thereby provide an aqueous compound mixture, and drying the aqueous compound mixture, followed by calcination. The Nb-containing aqueous solution comprises water having dissolved therein a dicarboxylic acid, an Nb compound and optionally ammonia, wherein the dicarboxylic acid/Nb molar ratio (.alpha.) satisfies: 1.ltoreq.(.alpha.).ltoreq.4, and the ammonia/Nb molar ratio (.beta.) satisfies: 0.ltoreq.(.beta.).ltoreq.2.Type: GrantFiled: August 5, 1998Date of Patent: March 14, 2000Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Satoru Komada, Hidenori Hinago, Masatoshi Kaneta, Mamoru Watanabe