Patents by Inventor Xianghua Yu
Xianghua Yu 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: 20230265221Abstract: Catalysts for the hydrogenation of aromatic containing polymers are described. Such a catalyst can include, based on the total weight of the catalyst, 99.1 wt. % to 99.95 wt. % of a metal oxide support, and 0.05 wt. % to 0.9 wt. % of catalytic metal nanoparticles comprising platinum (Pt), palladium (Pd), ruthenium (Ru), any combination thereof, or alloy thereof. The catalyst can have a specific surface area of 5 m2/g to 80 m2/g, a pore volume of 0.01 cm3/g to 0.35 cm3/g, and a catalyst median particle size of less than 300 microns. Processes to produce the catalyst and methods of hydrogenating aromatic containing polymers are also described.Type: ApplicationFiled: July 13, 2021Publication date: August 24, 2023Applicant: SABIC Global Technologies B.V.Inventors: Liheng WU, Dick NAGAKI, Jun WANG, Kaiwalya SABNIS, Xianghua YU, Travis CONANT, Paulette HAZIN
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Patent number: 11642664Abstract: Alumina support compositions comprising at least 0.1 wt % of silica are disclosed. The alumina support are characterized by a pore volume of greater than 0.60 cc/g, a median pore size ranging from about 70 to about 120, a pore size distribution such that at least 90% of the total pore volume falls within the range of about 20 to about 250, and a pore size distribution width of no less than about 40. Alumina compositions of the present invention exhibit a primary peak mode at a pore diameter less than the median pore diameter. Also provided are catalysts made from the alumina supports, and processes of preparing and using the supports and catalysts.Type: GrantFiled: August 3, 2021Date of Patent: May 9, 2023Assignee: Advanced Refining Technologies LLCInventors: Xianghua Yu, Bruno Nesci, Roberto Romero, Gill M. Malick, Jifei Jia, Cecelia A. Radlowski
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Publication number: 20210362137Abstract: Alumina support compositions comprising at least 0.1 wt % of silica are disclosed. The alumina support are characterized by a pore volume of greater than 0.60 cc/g, a median pore size ranging from about 70 to about 120, a pore size distribution such that at least 90% of the total pore volume falls within the range of about 20 to about 250, and a pore size distribution width of no less than about 40. Alumina compositions of the present invention exhibit a primary peak mode at a pore diameter less than the median pore diameter. Also provided are catalysts made from the alumina supports, and processes of preparing and using the supports and catalysts.Type: ApplicationFiled: August 3, 2021Publication date: November 25, 2021Applicant: Advanced Refining Technologies LLCInventors: Xianghua Yu, Bruno Nesci, Roberto Romero, Gill M. Malick, Jifei Jia, Cecelia A. Radlowski
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Patent number: 11090638Abstract: Alumina support compositions comprising at least 0.1 wt % of silica are disclosed. The alumina support are characterized by a pore volume of greater than 0.60 cc/g, a median pore size ranging from about 70 to about 120, a pore size distribution such that at least 90% of the total pore volume falls within the range of about 20 to about 250, and a pore size distribution width of no less than about 40. Alumina compositions of the present invention exhibit a primary peak mode at a pore diameter less than the median pore diameter. Also provided are catalysts made from the alumina supports, and processes of preparing and using the supports and catalysts.Type: GrantFiled: November 20, 2012Date of Patent: August 17, 2021Assignee: Advanced Refining Technologies LLCInventors: Xianghua Yu, Bruno C. Nesci, Roberto Romero, Gill M. Malick, Jifei Jia, Cecelia A. Radlowski
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Patent number: 10376873Abstract: This disclosure relates to supported multi-metallic catalysts for use in the hydrotreating of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor comprised of at least one Group VIB metal, at least one Group VIII metal and an organic acid. The catalyst precursor is thermally treated to partially decompose the organic acid, then sulfided. The catalysts have a high carbon-as-carboxyl to total carbon ratio (Ccarboxy/Ctotal) as a result of a unique post-metal calcination method employed during the manufacture of the catalyst.Type: GrantFiled: April 24, 2014Date of Patent: August 13, 2019Assignee: Advanced Refining Technologies LLCInventors: Xianghua Yu, Shuguang Zhang, Gill M. Malick, Bruno Nesci, Henry Saternus, Jifei Jia, Cecelia Radlowski, Theodorus Ludovicus Michael Maesen, Colleen T. Miedona
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Patent number: 10370600Abstract: This disclosure relates to supported multi-metallic catalysts for use in the hydrotreating of hydrocarbon feeds. The catalysts are prepared from a catalyst precursor comprised of at least one Group VIB metal, at least one Group VIII metal and an organic acid. The catalyst precursor is thermally treated to partially decompose the organic acid, then sulfided. The catalysts have a high carbon-as-carboxyl to total carbon ratio (Ccarboxy/Ctotal) as a result of a unique post-metal calcination method employed during the manufacture of the catalyst.Type: GrantFiled: April 24, 2014Date of Patent: August 6, 2019Assignee: Advanced Refining Technologies LLCInventors: Xianghua Yu, Shuguang Zhang, Gill M. Malick, Bruno Nesci, Henry Saternus, Jifei Jia, Cecelia A. Radlowski, Theodorus Ludovicus Michael Maesen, Colleen T. Miedona
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Patent number: 10369558Abstract: This disclosure relates to supported multi-metallic catalysts for use in the hydrotreating of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor comprised of at least one Group VIB metal, at least one Group VIII metal and an organic acid. The catalyst precursor is thermally treated to partially decompose the organic acid, then sulfided. The catalysts have a high carbon-as-carboxyl to total carbon ratio (Ccarboxy/Ctotal) as a result of a unique post-metal calcination method employed during the manufacture of the catalyst. As a result, the hydrotreating catalysts have lower percent weight loss-on-ignition, higher activity and longer catalyst life.Type: GrantFiled: April 24, 2014Date of Patent: August 6, 2019Assignee: Advanced Refining Technologies LLCInventors: Xianghua Yu, Shuguang Zhang, Gill M. Malick, Bruno Nesci, Henry Saternus, Jifei Jia, Cecelia A. Radlowski, Theodorus Ludovicus Michael Maesen, Colleen T. Miedona
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Publication number: 20150307789Abstract: This disclosure relates to supported multi-metallic catalysts for use in the hydrotreating of hydrocarbon feeds. The catalysts are prepared from a catalyst precursor comprised of at least one Group VIB metal, at least one Group VIII metal and an organic acid. The catalyst precursor is thermally treated to partially decompose the organic acid, then sulfided. The catalysts have a high carbon-as-carboxyl to total carbon ratio (Ccarboxy/Ctotal) as a result of a unique post-metal calcination method employed during the manufacture of the catalyst.Type: ApplicationFiled: April 24, 2014Publication date: October 29, 2015Inventors: Jifei JIA, Henry SATERNUS, Xianghua YU, Cecelia RADLOWSKI, Theodorus Ludovicus Michael MAESEN
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Publication number: 20150306591Abstract: This disclosure relates to supported multi-metallic catalysts for use in the hydrotreating of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor comprised of at least one Group VIB metal, at least one Group VIII metal and an organic acid. The catalyst precursor is thermally treated to partially decompose the organic acid, then sulfided. The catalysts have a high carbon-as-carboxyl to total carbon ratio (Ccarboxy/Ctotal) as a result of a unique post-metal calcination method employed during the manufacture of the catalyst. As a result, the hydrotreating catalysts have lower percent weight loss-on-ignition, higher activity and longer catalyst life.Type: ApplicationFiled: April 24, 2014Publication date: October 29, 2015Inventors: Jifei JIA, Henry SATERNUS, Xianghua YU, Cecelia RADLOWSKI, Theodorus Ludovicus Michael MAESEN
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Publication number: 20150306578Abstract: This disclosure relates to supported multi-metallic catalysts for use in the hydrotreating of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor comprised of at least one Group VIB metal, at least one Group VIII metal and an organic acid. The catalyst precursor is thermally treated to partially decompose the organic acid, then sulfided. The catalysts have a high carbon-as-carboxyl to total carbon ratio (Ccarboxy/Ctotal) as a result of a unique post-metal calcination method employed during the manufacture of the catalyst.Type: ApplicationFiled: April 24, 2014Publication date: October 29, 2015Inventors: Jifei JIA, Henry SATERNUS, Xianghua YU, Cecelia RADLOWSKI, Theodorus Ludovicus Michael MAESEN
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Publication number: 20140367311Abstract: Alumina support compositions comprising at least 0.1 wt % of silica are disclosed. The alumina support are characterized by a pore volume of greater than 0.60 cc/g, a median pore size ranging from about 70 to about 120, a pore size distribution such that at least 90% of the total pore volume falls within the range of about 20 to about 250, and a pore size distribution width of no less than about 40. Alumina compositions of the present invention exhibit a primary peak mode at a pore diameter less than the median pore diameter. Also provided are catalysts made from the alumina supports, and processes of preparing and using the supports and catalysts.Type: ApplicationFiled: November 20, 2012Publication date: December 18, 2014Applicant: Advanced Refining Technologies LLCInventors: Xianghua Yu, Bruno C. Nesci, Roberto Romero, Gill M. Malick, Jifei Jia, Cecelia A. Radlowski
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Patent number: 7737302Abstract: This invention described a synthesis method of bupropion hydrochloride. m-chloropropiophenone was brominated directly with bromine, then aminated with t-butylamine and finally reacted with HCl to obtain crude product of bupropion hydrochloride. Pure product was obtained after recrystallization. This method is convenient and suitable for commercial manufacturing because of low cost of production, high yield, less byproducts and being environmental friendly.Type: GrantFiled: July 7, 2008Date of Patent: June 15, 2010Assignee: Zhejiang Apeloa Medical Technology Co., Ltd.Inventors: Chaogang Wu, Huayou Xiang, Xianghua Yu, Chun He, Fengying Li, Xianghong Shi, Chengyue Lu, Guoliang Chen, Yangxiang Ge
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Publication number: 20090012328Abstract: This invention described a synthesis method of bupropion hydrochloride. m-chloropropiophenone was brominated directly with bromine, then aminated with t-butylamine and finally reacted with HCl to obtain crude product of bupropion hydrochloride. Pure product was obtained after recrystallization. This method is convenient and suitable for commercial manufacturing because of low cost of production, high yield, less byproducts and being environmental friendly.Type: ApplicationFiled: July 7, 2008Publication date: January 8, 2009Inventors: Chaogang Wu, Huayou Xiang, Xianghua Yu, Chun He, Fengying Li, Xianghong Shi, Chengyue Lu, Guoliang Chen, Yangxiang Ge