Patents by Inventor Shinkichi Shimizu
Shinkichi Shimizu 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: 8419831Abstract: Disclosed is a method for recovering carbon dioxide from a gas containing carbon dioxide, comprising the step (1) of bringing a gas containing carbon dioxide into contact with an aqueous solution containing 2-isopropylaminoethanol and at least one substance selected from the group consisting of piperazines and alkanolamines to absorb carbon dioxide into the aqueous solution; and the step (2) of heating the aqueous solution containing carbon dioxide absorbed therein, which is obtained in the step (1), to separate and recover carbon dioxide from the solution.Type: GrantFiled: June 24, 2008Date of Patent: April 16, 2013Assignee: Research Institute of Innovative Technology for the EarthInventors: Shinkichi Shimizu, Firoz Alam Chowdhury, Hiromichi Okabe, Kazuya Goto
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Publication number: 20100126348Abstract: Disclosed is a method for recovering carbon dioxide from a gas containing carbon dioxide, comprising the step (1) of bringing a gas containing carbon dioxide into contact with an aqueous solution containing 2-isopropylaminoethanol and at least one substance selected from the group consisting of piperazines and alkanolamines to absorb carbon dioxide into the aqueous solution; and the step (2) of heating the aqueous solution containing carbon dioxide absorbed therein, which is obtained in the step (1), to separate and recover carbon dioxide from the solution.Type: ApplicationFiled: June 24, 2008Publication date: May 27, 2010Applicant: RESEARCH INSTITUTE OF INNOVATIVE TECHNOLOGY FOR THE EARTHInventors: Shinkichi Shimizu, Firoz Alam Chowdhury, Hiromichi Okabe, Kazuya Goto
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Patent number: 5668281Abstract: A process for preparing a tertiary amine-N-oxide which comprises reacting a tertiary amine with a peroxide in the presence of a catalyst comprising an oxide containing silicon and titanium atoms. According to the process of the present invention, a tertiary amine-N-oxide can be obtained in a high yield, and since the catalyst can easily be separated from the reaction mixture, the tertiary amine-N-oxide can be obtained in a high purity without the contamination by the catalyst.Type: GrantFiled: January 19, 1996Date of Patent: September 16, 1997Assignee: Koei Chemical Co., Ltd.Inventors: Shinkichi Shimizu, Nanao Watanabe, Hideki Kuranishi
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Patent number: 5237068Abstract: The present invention provides a process for producing pyridine bases which comprises reacting an aliphatic aldehyde and/or a ketone with ammonia in the presence of a catalyst in gaseous phase, said catalyst comprising a zeolite containing (a) an element belonging to the platinum group and (b) at least one element selected from the group consisting of the elements of Groups IIB, IIIA and IVA of the periodic table and the having an atomic ratio of Si to elements consisting of Al, B, Fe and/or Ga of about 12 to about 1,000 and a constraint indedx of about 0.8 to about 12.Type: GrantFiled: August 7, 1991Date of Patent: August 17, 1993Assignee: Koei Chemical Company, LimitedInventors: Shinkichi Shimizu, Nobuyuki Abe, Masanori Doba, Akira Iguchi
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Patent number: 5208380Abstract: A process for preparing monoallylamine represented by the formula (II):CH.sub.2 .dbd.CHCH.sub.2 NH.sub.2 (II)which comprises: catalytically reacting isopropanolamine represented by the formula (I): ##STR1## in a gaseous phase in the presence of a catalyst having dehydrating property. According to the preparation process of the present invention, monoallylamine can be easily obtained in high selectivity and high yield.Type: GrantFiled: April 13, 1992Date of Patent: May 4, 1993Assignee: Koei Chemical Co., Ltd.Inventors: Shinkichi Shimizu, Takayuki Shoji, Hideki Nakao
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Patent number: 5071802Abstract: Carbonaceous materials deposited on solid catalysts and produced, for example, in Beckmann rearrangement in a gaseous phase are burned off by effecting the treatment in the presence of alcohols such as methanol or ethanol together with molecular oxygen-containing gas in order to regenerate the catalyst activity.Type: GrantFiled: March 7, 1990Date of Patent: December 10, 1991Assignee: Sumitomo Chemical Co., Ltd.Inventors: Shinkichi Shimizu, Takayasu Niwa, Nobuyuki Abe, Masanori Doba, Akira Iguchi, Hiroshi Ichihashi, Masaru Kitamura
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Patent number: 4931561Abstract: A heteroaromatic nitrile is prepared in high conversion and yield by catalytically reacting an alkyl-substituted heteroaromatic compound with molecular oxygen and ammonia in the presence of a catalyst having the following composition:Mo(P).sub.x (A).sub.y (B).sub.z (O).sub.w (I)wherein x, y, z and w represent atomic ratios of phosphorus, an element A defined below, an element B defined below and oxygen to molybdenum, respectively and(i) x and z are both 0 (zero), y is from 0.1 to 5, and A is at least one element selected from the group consisting of cerium and tungsten, or(ii) x is from 0.1 to 7, y is from 0 to 5, z is from 0 to 5, A is at least one element selected from the group consisting of cerium, manganese and tungsten, and B is at least one element selected from the group consisting of thallium, titanium, niobium and aluminum, or(iii) x is from 0.5 to 7, y is from 0 to 5, z is from 0.01 to 2.Type: GrantFiled: July 25, 1988Date of Patent: June 5, 1990Assignee: Koei Chemical Co., Ltd.Inventors: Shinkichi Shimizu, Takayuki Shoji, Kanji Kono, Toru Nakaishi
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Patent number: 4810794Abstract: Process for producing pyridine bases by reacting an aliphatic aldehyde and/or ketone with ammonia in gaseous phase in the presence of a catalyst, characterized by using a catalyst which is obtained by modifying a zeolite having an atomic ratio of Si to Al, Fe and/or Ga of 12 to 1,000 and a constraint index of about 0.8 to about 12 with at least one metal ion and/or metal compound selected from the group consisting of thallium, lead and cobalt.Type: GrantFiled: February 2, 1987Date of Patent: March 7, 1989Assignee: Koei Chemical Co., Ltd.Inventors: Shinkichi Shimizu, Nobuyuki Abe, Masanori Doba, Akira Iguchi, Hiroshi Sato, Ken-ichi Hirose, Youichi Umada
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Patent number: 4778890Abstract: A heteroaromatic nitrile is prepared in a high selectivity and yield by catalytically reacting an alkyl-substituted heteroaromatic compound with molecular oxygen and ammonia in a molar ratio of oxygen to ammonia of not larger than 1.6:1 in a gaseous phase in the presence of a catalyst comprising a vanadium-phosphorus oxide of the formula:VP.sub.x Sb.sub.y O.sub.z (I)wherein x, y and z represent atomic ratios of phosphorus, antimony and oxygen to vanadium, respectively, and x is from 0.1 to 5, y is 0 to 8 and z is defined from the valencies of other elements.Type: GrantFiled: July 16, 1987Date of Patent: October 18, 1988Assignee: Koei Chemical Co., Ltd.Inventors: Shinkichi Shimizu, Takayuki Shoji, Nobuyuki Abe, Masanori Doba, Akira Taguro, Akira Iguchi, Toru Nakaishi
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Patent number: 4605779Abstract: A novel method for producing tiglic aldehyde from ethylacrolein by isomerization in the presence of a hydrogenating catalyst is disclosed. According to the invention, tiglic aldehyde can be prepared in a good yield.Type: GrantFiled: July 24, 1985Date of Patent: August 12, 1986Assignee: Sumitomo Chemical Company, LimitedInventors: Teruo Matsuda, Shinkichi Shimizu, Masaaki Iwasa
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Patent number: 4565801Abstract: A heteropoly-acid of the formula:H.sub.3+x (PMo.sub.12-x V.sub.x O.sub.40).nH.sub.2 Owherein x and n are numbers satisfying respectively the equations: 0.ltoreq.x.ltoreq.3 and n.ltoreq.6, and comprising phosphorus as the central atom and molybdenum or molybdenum and vanadium as the coordinating atoms, or its reduction-form product, which is in a cubic crystal structure having diffraction lines at lattice spacings (d) of at least 8.4, 6.8, 5.9, 4.8, 4.2 and 3.4 in the X-ray powder diffraction. The heteropoly-acid is useful as a catalyst, especially as a catalyst in the production of methacrylic acid by the gas-phase catalytic oxidation of methacrolein.Type: GrantFiled: April 23, 1982Date of Patent: January 21, 1986Assignee: Sumitomo Chemical Company, LimitedInventors: Shinkichi Shimizu, Hiroshi Ichihashi, Koichi Nagai
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Patent number: 4321224Abstract: A method for the production of a spherical molded product of a titanium oxide composition comprising adding a titanium oxide composition powder and a mist of an aqueous medium to a seed of an inorganic substance, granulating the mixture with a centrifugal fluidizing coating granulator and calcining the resultant spherical product, which is characteristic in that the granulation of the mixture is carried out by adding the titanium oxide composition powder and the aqueous medium in the ratio of addition rate of 1:0.20 to 1:0.35 by weight, whereby there is obtained a spherical molded product having a larger strength with less abrasion. The spherical molded product obtained by the present invention is useful, for instance, as a catalyst carrier or catalyst for the removal of nitrogen oxides from exhaust gases.Type: GrantFiled: December 31, 1979Date of Patent: March 23, 1982Assignee: Sumitomo Chemical Company, LimitedInventors: Shinkichi Shimizu, Tadao Nishizaki, Masabumi Tsuda
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Patent number: 4293445Abstract: A method for the production of a molded product containing titanium oxide, which comprises molding a titanium oxide composition containing a barium compound in the atomic ratio of titanium:barium=100:0.1 to 20. The resulting molded product has excellent strength and is useful, for example, as a catalyst carrier or catalyst, in various shapes such as pellet, bar, ring, sphere, or the like.Type: GrantFiled: January 3, 1980Date of Patent: October 6, 1981Assignee: Sumitomo Chemical Company, LimitedInventors: Shinkichi Shimizu, Tadao Nishizaki, Masabumi Tsuda
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Patent number: 4075283Abstract: A process for the selective removal of nitrogen oxides from waste gases containing sulfur oxides as well as nitrogen oxides, which comprises contacting the waste gases with a catalyst comprising active metal oxides consisting of vanadium oxide and at least one of molybdenum oxide and tungsten oxide as a catalytically active component and .alpha.-alumina having a specific surface area of 0.3 to 12 m.sup.2 /g and a pore volume of 0.1 cm.sup.3 /g or more as a carrier wherein the atomic ratio of the vanadium, molybdenum, tungsten and aluminum contained in the carrier alumina isV.sub.12-x-y Mo.sub.x W.sub.y Al.sub.zwherein 0.ltoreq.x.ltoreq.8, 0.ltoreq.y.ltoreq.5, 0.3.ltoreq.x + y.ltoreq.8 and 40.ltoreq.z.ltoreq.480, in the presence of ammonia of 0.3 to 4 mol on the basis of 1 mol of nitrogen oxides contained in the waste gases at a temperature of 150.degree. to 700.degree. C.Type: GrantFiled: July 25, 1974Date of Patent: February 21, 1978Assignee: Sumitomo Chemical Company, LimitedInventors: Tatsuo Shiraishi, Shinkichi Shimizu, Tadashi Shindo
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Patent number: 4071601Abstract: A process for selective removal of nitrogen oxides from waste gases containing 1,500 ppm or less (gas volume) of nitrogen oxides by contacting the waste gases with a metal oxide catalyst containing vanadium oxide and at least one of molybdenum oxide and tungsten oxide with an atomic ratio of the oxide forming elements of:V.sub.12-x-y Mo.sub.x W.sub.yWherein 0.ltoreq.x.ltoreq.8, 0.ltoreq.y.ltoreq.5 and 0.3.ltoreq.x + y.ltoreq.8, at a temperature of 150.degree. to 700.degree. C in the presence of 0.3 to 4 mol of ammonia (on the basis of 1 mol of the nitrogen oxides).Type: GrantFiled: February 27, 1976Date of Patent: January 31, 1978Assignee: Sumitomo Chemical Company, LimitedInventors: Tatsuo Shiraishi, Shinkichi Shimizu, Tadashi Shindo
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Patent number: 4058547Abstract: In the production of acrylonitrile by a vapor phase reaction of propylene, ammonia and oxygen at an elevated temperature, a process which comprises contacting propylene, ammonia and oxygen with a catalyst composition comprising a catalyst system of the formula: Tl.sub.a P.sub.b Mo.sub.c Fe.sub.d Bi.sub.e X.sub.f O.sub.g wherein X represents one or more of the metals, Ni, Mg and Co, and a, b, c, d, e, f and g represent respectively the relative number of atoms of each component; provided that when c is 12, a is 2 or less, but not 0; b is 0 to 5; d is 0.1 to 5; e is 0.1 to 5; f is 2 to 15; and the value of g depends on the number of the other atoms and is usually from 38.3 to 81.5.Type: GrantFiled: November 1, 1972Date of Patent: November 15, 1977Assignee: Sumitomo Chemical Company, LimitedInventors: Tatsuo Shiraishi, Shinkichi Shimizu, Hiroshi Ichihashi
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Patent number: 4010238Abstract: A process for the selective removal of nitrogen oxides from waste gases containing nitrogen oxides, which comprises contacting the waste gases with a metal oxide catalyst having the following formula:V.sub.x A.sub.y O.sub.zwherein V is vanadium; A is at least one element selected from the group consisting of copper, zinc, tin, lead, titanium, phosphorus, chromium, iron, cobalt and nickel; x and y are each a numeral of 0.5 to 12; and z is a numeral of 1 to 60, at a temperature of 150.degree. to 800.degree. C in the presence of ammonia.Type: GrantFiled: March 19, 1974Date of Patent: March 1, 1977Assignee: Sumitomo Chemical Company, LimitedInventors: Tatsuo Shiraishi, Shinkichi Shimizu, Hiroshi Ichihashi, Tadashi Shindo
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Patent number: 4003978Abstract: A method for treating ammonia-containing gases for removing ammonia therefrom, which comprises contacting the ammonia-containing gases with a metal oxide catalyst having the following formula:Cr.sub.x A.sub.y O.sub.zwherein Cr is chromium; A is at least one element selected from the group consisting of tin, antimony, vanadium, cobalt, silver, zinc, nickel, titanium, molybdenum, tungsten, sulfur, phosphorus, boron, germanium and zirconium; x is a numeral of 4 to 12; y is a numeral of 0.2 to 8 and z is a numeral of 6.2 to 42, in a vapor phase at a temperature of from 200.degree. to 500.degree. C in the presence of molecular oxygen, and thereby the ammonia is oxidized to harmless nitrogen gas.Type: GrantFiled: October 18, 1974Date of Patent: January 18, 1977Assignee: Sumitomo Chemical Company, LimitedInventors: Tatsuo Shiraishi, Shinkichi Shimizu, Hiroshi Ichihashi, Tadashi Shindo, Fumiyoshi Kato
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Patent number: 3970702Abstract: A catalytic process for the preparation of acrolein by the vapor phase oxidation of propylene which comprises contacting propylene and oxygen with a catalyst composition comprising a catalyst system of the formula:Mo.sub.a Bi.sub.b Fe.sub.c X.sub.d Ni.sub.e Tl.sub.f P.sub.g O.sub.hwherein X is one or more of Mg, Mn and Co and a, b, c, d, e, f, g and h represent, respectively, the number of atoms wherein a is 12, b is 0.1 to 5, c is 0.1 to 5, d is 0 to 12, e is 0.1 to 12, f is 1 or less but not 0, g is 0 to 5 and h depends on the number of the other atoms and is usually from 36 to 89. Acrolein is produced with the use of said catalyst in a high selectivity and an excellent yield per each pass even at a large space velocity.Type: GrantFiled: December 3, 1974Date of Patent: July 20, 1976Assignee: Sumitomo Chemical Company, LimitedInventors: Tatsuo Shiraishi, Susumu Kishiwada, Shinkichi Shimizu, Shigern Honmaru, Hiroshi Ichihashi, Yoshihiko Nagaoka
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Patent number: 3970739Abstract: The process involves stripping ammonium nitrogens and organic materials, as gases, which are present in process waste waters to be discharged from plants wherein gases for use in ammonia synthesis are manufactured by reforming hydrocarbons with steam, decomposing the organic materials selectively in the presence of a catalyst at a temperature of about 120.degree. to 400.degree. C., mixing the remaining gases with the flue gases from said plants so as to provide a gaseous mixture having ammonia therein in an amount of about 0.3 to 10 moles per mole of nitrogen oxides present in the flue gases, reacting the gaseous mixture over a catalyst at a temperature of about 150.degree. to 700.degree. C. and oxidizing the unreacted ammonia, if any, in the presence of a catalyst at a temperature of about 150.degree. to 700.degree. C. to render the nocuous substances innocuous.Type: GrantFiled: December 6, 1974Date of Patent: July 20, 1976Assignee: Sumitomo Chemical Company, LimitedInventors: Tatsuo Shiraishi, Hiroshi Fukusen, Sachio Oishi, Shinkichi Shimizu, Hiroyuki Nishikawa, Tetsu Wakabayashi