Patents by Inventor Jifeng Pang
Jifeng Pang 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: 10654781Abstract: This invention provides a method for catalytic conversion of carbohydrates to low-carbon diols using alloy catalysts. In the process, carbohydrates as the feedstock are subjected to one-step catalytic conversion to realize the highly efficient and selective production of ethylene glycol etc. under hydrothermal conditions, with an alloy catalyst composed of tin, and a transition metal such as iron, cobalt, nickel, rhodium, ruthenium, palladium, iridium, platinum and copper, or a mixture thereof. The reaction is carried out in water at a temperature range of 120-300° C., with a hydrogen pressure range of 1-13 MPa. Compared with the present petroleum based synthesis technology of ethylene glycol, the method in this invention possesses advantages of using renewable feedstock, high atom economy and environmental friendly.Type: GrantFiled: November 26, 2015Date of Patent: May 19, 2020Assignee: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCESInventors: Ruiyan Sun, Mingyuan Zheng, Tao Zhang, Jifeng Pang, Yu Jiang, Aiqin Wang, Xiaodong Wang
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Publication number: 20180178201Abstract: This invention provides a method for catalytic conversion of carbohydrates to low-carbon diols using alloy catalysts. In the process, carbohydrates as the feedstock are subjected to one-step catalytic conversion to realize the highly efficient and selective production of ethylene glycol etc. under hydrothermal conditions, with an alloy catalyst composed of tin, and a transition metal such as iron, cobalt, nickel, rhodium, ruthenium, palladium, iridium, platinum and copper, or a mixture thereof. The reaction is carried out in water at a temperature range of 120-300° C., with a hydrogen pressure range of 1-13 MPa. Compared with the present petroleum based synthesis technology of ethylene glycol, the method in this invention possesses advantages of using renewable feedstock, high atom economy and environmental friendly.Type: ApplicationFiled: November 26, 2015Publication date: June 28, 2018Inventors: Ruiyan SUN, Mingyuan ZHENG, Tao ZHANG, Jifeng PANG, Yu JIANG, Aiqin WANG, Xiaodong WANG
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Patent number: 9085505Abstract: This invention provides a method for highly efficient catalytic conversion of cellulosic raw materials to glycols. In the process, cellulosic compounds such as crop stalk, wood powder and etc., as feedstock are subjected to one-step catalytic conversion with a ternary composite catalyst composed of organic acid or inorganic acid which does not contain tungsten, a transition metal from Groups 8, 9 or 10 such as iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, or a mixture thereof, and a tungsten oxide, a tungsten sulfide, a tungsten chloride, a tungsten hydroxide, tungsten bronze, tungstic acid, a tungstate, a metatungstate acid, a metatungstate, a paratungstate acid, a paratungstate, a peroxotungstic acid, pertungstate and heteropoly tungstate, or a mixture thereof. The reaction is carried out under hydrothermal conditions at a temperature between 120-300° C. with hydrogen pressure between 1-13 MPa.Type: GrantFiled: May 16, 2013Date of Patent: July 21, 2015Assignee: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCESInventors: Tao Zhang, Jifeng Pang, Mingyuan Zheng, Yu Jiang, Aiqin Wang
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Publication number: 20150057469Abstract: This invention provides a method for highly efficient catalytic conversion of cellulosic raw materials to glycols. In the process, cellulosic compounds such as crop stalk, wood powder and etc., as feedstock are subjected to one-step catalytic conversion with a ternary composite catalyst composed of organic acid or inorganic acid which does not contain tungsten, a transition metal from Groups 8, 9 or 10 such as iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, or a mixture thereof, and a tungsten oxide, a tungsten sulfide, a tungsten chloride, a tungsten hydroxide, tungsten bronze, tungstic acid, a tungstate, a metatungstate acid, a metatungstate, a paratungstate acid, a paratungstate, a peroxotungstic acid, pertungstate and heteropoly tungstate, or a mixture thereof. The reaction is carried out under hydrothermal conditions at a temperature between 120-300° C. with hydrogen pressure between 1-13 MPa.Type: ApplicationFiled: May 16, 2013Publication date: February 26, 2015Inventors: Tao Zhang, Jifeng Pang, Mingyuan Zheng, Yu Jiang, Aiqin Wang
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Patent number: 8410319Abstract: A catalytic process for generating at least one polyol from a feedstock comprising cellulose is performed in a continuous manner. The process involves, contacting, continuously, hydrogen, water, and a feedstock comprising cellulose, with a catalyst to generate an effluent stream comprising at least one polyol, water, hydrogen, and at least one co-product. The water, hydrogen, and at least one co-product are separated from the effluent stream and recycled to the reaction zone. The polyol is recovered from the effluent stream.Type: GrantFiled: July 28, 2011Date of Patent: April 2, 2013Assignees: UOP LLC, Dalian Institute of Chemical Physics, Chinese Academy of SciencesInventors: Tom N. Kalnes, John Q. Chen, Joseph A. Kocal, Tao Zhang, Aiqin Wang, Mingyuan Zheng, Changzhi Li, Jifeng Pang
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Patent number: 8324433Abstract: A method for producing ethylene glycol, including (a) adding a polyhydroxy compound and water to a sealed high-pressure reactor, (b) removing air and introducing hydrogen, and (c) allowing the polyhydroxy compound to react in the presence of a catalyst while stiffing. The catalyst includes a first active ingredient and a second active ingredient. The first active ingredient includes a transition metal of Group 8, 9, or 10 selected from iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, and/or a mixture thereof. The second active ingredient includes a metallic state of molybdenum and/or tungsten, or a carbide, nitride, or phosphide thereof. The method is carried out at a hydrogen pressure of 1-12 MPa, at a temperature of 120-300° C. for not less than 5 min in a one-step catalytic reaction. The efficiency, selectivity, and the yield of ethylene glycol are high. The preparation process is simple and the materials used are renewable.Type: GrantFiled: October 31, 2010Date of Patent: December 4, 2012Assignee: Dalian Institute of Chemical Physics, Chinese Academy of SciencesInventors: Tao Zhang, Mingyuan Zheng, Aiqin Wang, Na Ji, Jifeng Pang, Zhijun Tai, Likun Zhou, Jingguang Chen, Xiaodong Wang
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Patent number: 8323937Abstract: A catalytic process for generating at least one polyol from a feedstock comprising cellulose is performed in a continuous manner using a catalyst comprising nickel tungsten carbide. The process involves, contacting, continuously, hydrogen, water, and a feedstock comprising cellulose, with the catalyst to generate an effluent stream comprising at least one polyol and recovering the polyol from the effluent stream.Type: GrantFiled: July 28, 2011Date of Patent: December 4, 2012Assignees: UOP LLC, Dalian Institute of Chemical PhysicsInventors: Tao Zhang, Aiqin Wang, Mingyuan Zheng, Changzhi Li, Jifeng Pang, Tom N. Kalnes, John Q. Chen, Joseph A. Kocal
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Publication number: 20110313212Abstract: A catalytic process for generating at least one polyol from a feedstock comprising cellulose is performed in a continuous manner. The process involves, contacting, continuously, hydrogen, water, and a feedstock comprising cellulose, with a catalyst to generate an effluent stream comprising at least one polyol, water, hydrogen, and at least one co-product. The water, hydrogen, and at least one co-product are separated from the effluent stream and recycled to the reaction zone. The polyol is recovered from the effluent stream.Type: ApplicationFiled: July 28, 2011Publication date: December 22, 2011Applicant: UOP LLCInventors: Tom N. Kalnes, John Q. Chen, Joseph A. Kocal, Tao Zhang, Aiqin Wang, Mingyuan Zheng, Changzhi Li, Jifeng Pang
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Publication number: 20110312050Abstract: A catalytic process for generating at least one polyol from a feedstock comprising cellulose is performed in a continuous manner using a catalyst comprising nickel tungsten carbide. The process involves, contacting, continuously, hydrogen, water, and a feedstock comprising cellulose, with the catalyst to generate an effluent stream comprising at least one polyol and recovering the polyol from the effluent stream.Type: ApplicationFiled: July 28, 2011Publication date: December 22, 2011Applicant: UOP LLCInventors: Tao Zhang, Aiqin Wang, Mingyuan Zheng, Changzhi Li, Jifeng Pang, Tom N. Kalnes, John Q. Chen, Joseph A. Kocal
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Publication number: 20110046419Abstract: A method for producing ethylene glycol, including (a) adding a polyhydroxy compound and water to a sealed high-pressure reactor, (b) removing air and introducing hydrogen, and (c) allowing the polyhydroxy compound to react in the presence of a catalyst while stiffing. The catalyst includes a first active ingredient and a second active ingredient. The first active ingredient includes a transition metal of Group 8, 9, or 10 selected from iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, and/or a mixture thereof. The second active ingredient includes a metallic state of molybdenum and/or tungsten, or a carbide, nitride, or phosphide thereof. The method is carried out at a hydrogen pressure of 1-12 MPa, at a temperature of 120-300° C. for not less than 5 min in a one-step catalytic reaction. The efficiency, selectivity, and the yield of ethylene glycol are high. The preparation process is simple and the materials used are renewable.Type: ApplicationFiled: October 31, 2010Publication date: February 24, 2011Applicant: Dalian Institute of Chemical Physics, Chinese Academy of SciencesInventors: Tao ZHANG, Mingyuan ZHENG, Aiqin WANG, Na JI, Jifeng PANG, Zhijun TAI, Likun ZHOU, Jingguang CHEN, Xiaodong WANG