Patents by Inventor Ashim Kumar Ghosh
Ashim Kumar Ghosh 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: 20240067588Abstract: A method for purifying 1-hexene is disclosed. The method can include contacting a first stream containing 1-hexene and 2-ethyl-1-butene with an isomerization catalyst containing an comprising an alumina, silica-alumina, a zeolite, or an ion exchange resin, or any combinations thereof, under conditions sufficient to selectively isomerize at least a portion of 2-ethyl-1-butene into 3-methyl-2-pentene and form a second stream containing 1-hexene and 3-methyl-2-pentene, and separating the second stream into a third stream containing 1-hexene and a fourth stream containing 3-methyl-2-pentene.Type: ApplicationFiled: December 20, 2021Publication date: February 29, 2024Inventors: Shahid Azam, Abdulmajeed Mohammed Al-Hamdan, Mohammed Fahad Al-Anazi, Bander Bawareth, Ashim Kumar Ghosh, Debashis Chakraborty, Somak Paul, Rajan V. Deshmukh, Ahmed Hussain Eissa, Omar A. Marghalani, Sebastiano Licciulli
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Patent number: 11090640Abstract: A method for preparing a hydrocracking catalyst comprising: (i) providing a shaped body comprising a zeolite and a binder, wherein the shaped body has been obtained by shaping, calcination and cooling, wherein the zeolite is ZSM-5 having a silica (SiO2) to alumina (Al2O3) molar ratio of 25-75; (ii) optionally drying the shaped body at a temperature of 100-300° C. for a period of at least 1 hour; (iii) depositing a hydrogenation metal on the shaped body by an impregnation for a period of at most 2 hours such that the amount of the hydrogenation metal is 0.010-0.30 wt % with respect to the total catalyst; (iv) optionally rinsing the metal deposited shaped body with water; and (v) heat-treating the metal deposited shaped body in air at a temperature of 250-300° C. for a period of 1-5 hours; wherein the catalyst comprises a total of less than 0.05 wt % sodium and cesium.Type: GrantFiled: October 17, 2017Date of Patent: August 17, 2021Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Ashim Kumar Ghosh, Alla Khanmamedova, Scott A. Stevenson
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Patent number: 10975002Abstract: A method of producing a purified mixed xylene comprising: introducing toluene and methanol to an alkylation reactor; reacting the toluene and the methanol in the alkylation reactor to form a hydrocarbon stream comprising a first mixed xylene, wherein the alkylation reactor comprises an alkylation catalyst; separating the hydrocarbon stream into a toluene stream and a separated C8+ stream; introducing the toluene stream to a transalkylation reactor with a transalkylation catalyst to produce a transalkylated stream comprising a second mixed xylene; adding the transalkylated stream to the hydrocarbon stream; and separating a C8 product stream comprising the purified mixed xylene from the separated C8+ stream.Type: GrantFiled: August 29, 2017Date of Patent: April 13, 2021Assignee: SAUDI BASIC INDUSTRIES CORPORATIONInventors: Ashim Kumar Ghosh, Mohamed Elbaccouch, Mohammad Shafiei, Murali Gopalakrishnan
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Patent number: 10864505Abstract: The invention relates to a process for preparing a hydrocracking catalyst, comprising (i) contacting a shaped body comprising a zeolite and a binder with an aqueous solution of a hydrogenation metal compound which is a complex or a salt of a hydrogenation metal to deposit the hydrogenation metal onto the shaped body, wherein the aqueous solution comprises an ammonium salt and (ii) calcining the shaped body obtained by step (i).Type: GrantFiled: December 5, 2016Date of Patent: December 15, 2020Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Alla Khanmamedova, Ashim Kumar Ghosh, Scott Stevenson, David Sullivan, Pooja Bajaj
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Patent number: 10865167Abstract: A process for hydrocracking 2,4-dimethylpentane and/or 2,2,3-trimethylbutane can comprise: contacting a hydrocracking feed stream in the presence of hydrogen with a hydrocracking catalyst, wherein the hydrocracking feed stream comprises at least 0.5 wt % of 2,4-dimethylpentane and/or 2,2,3-trimethylbutane, based upon a total weight of the hydrocracking feed stream; and wherein the hydrocracking catalyst comprises a medium pore zeolite having a pore size of 5-6 A and a silica to alumina molar ratio of 20-75; preferably the hydrocracking catalyst comprises a medium pore zeolite having a pore size of 5-6 A and a silica to alumina molar ratio of 20-75 and a large pore zeolite having a pore size of 6-8 A and a silica to alumina molar ratio of 10-80, wherein the hydrogenation metal is deposited on the medium pore zeolite and the large pore zeolite.Type: GrantFiled: September 7, 2017Date of Patent: December 15, 2020Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Ashim Kumar Ghosh, Alla Khanmamedova, Scott A. Stevenson, Luis Aramburo, David L. Sullivan, Cong Nguyen
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Patent number: 10717936Abstract: A process for processing mixed plastics comprising simultaneous pyrolysis and dechlorination of the mixed plastics, the process comprising contacting the mixed plastics with a zeolitic catalyst in a pyrolysis unit to produce a hydrocarbon product comprising a gas phase and a liquid phase; and separating the hydrocarbon product into a hydrocarbon gas stream and a hydrocarbon liquid stream, wherein the hydrocarbon gas stream comprises at least a portion of the gas phase of the hydrocarbon product, wherein the hydrocarbon liquid stream comprises at least a portion of the liquid phase of the hydrocarbon product, wherein the hydrocarbon liquid stream comprises one or more chloride compounds in an amount of less than about 100 ppmw chloride, based on the total weight of the hydrocarbon liquid stream, and wherein the hydrocarbon liquid stream is characterized by a viscosity of less than about 400 cP at a temperature of 300° C.Type: GrantFiled: July 17, 2017Date of Patent: July 21, 2020Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Alexander Stanislaus, Ravichander Narayanaswamy, Krishna Kumar Ramamurthy, Santosh Ganji, Abrar A. Hakeem, Ashim Kumar Ghosh, Girish Koripelly, Mohammad Javeed
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Patent number: 10710058Abstract: Disclosed herein is a process for preparing a hydrocracking catalyst, comprising (i) combining a zeolite, a binder, water and a hydrogenating metal compound which is a complex or a salt of a hydrogenating metal to obtain a mixture, wherein the zeolite has not been treated with a phosphorus-containing compound and the zeolite has a silica to alumina molar ratio of 5-200; (ii) forming the mixture into a shaped body; and (iii) calcining the shaped body to form the catalyst.Type: GrantFiled: August 1, 2017Date of Patent: July 14, 2020Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Ashim Kumar Ghosh, Alla Khanmamedova
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Publication number: 20190375696Abstract: A process for hydrocracking 2,4-dimethylpentane and/or 2,2,3-trimethylbutane can comprise: contacting a hydrocracking feed stream in the presence of hydrogen with a hydrocracking catalyst, wherein the hydrocracking feed stream comprises at least 0.5 wt % of 2,4-dimethylpentane and/or 2,2,3-trimethylbutane, based upon a total weight of the hydrocracking feed stream; and wherein the hydrocracking catalyst comprises a medium pore zeolite having a pore size of 5-6 A and a silica to alumina molar ratio of 20-75; preferably the hydrocracking catalyst comprises a medium pore zeolite having a pore size of 5-6 A and a silica to alumina molar ratio of 20-75 and a large pore zeolite having a pore size of 6-8 A and a silica to alumina molar ratio of 10-80, wherein the hydrogenation metal is deposited on the medium pore zeolite and the large pore zeolite.Type: ApplicationFiled: September 7, 2017Publication date: December 12, 2019Inventors: Ashim Kumar Ghosh, Alla Khanmamedova, Scott A. Stevenson, Luis Aramburo, David L. Sullivan, Cong Nguyen
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Publication number: 20190321809Abstract: Disclosed herein is a process for preparing a hydrocracking catalyst, comprising (i) combining a zeolite, a binder, water and a hydrogenating metal compound which is a complex or a salt of a hydrogenating metal to obtain a mixture, wherein the zeolite has not been treated with a phosphorus-containing compound and the zeolite has a silica to alumina molar ratio of 5-200; (ii) forming the mixture into a shaped body; and (iii) calcining the shaped body to form the catalyst.Type: ApplicationFiled: August 1, 2017Publication date: October 24, 2019Inventors: Ashim Kumar Ghosh, Alla Khanmamedova
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Publication number: 20190299491Abstract: A process for processing mixed plastics comprising simultaneous pyrolysis and dechlorination of the mixed plastics, the process comprising contacting the mixed plastics with a zeolitic catalyst in a pyrolysis unit to produce a hydrocarbon product comprising a gas phase and a liquid phase; and separating the hydrocarbon product into a hydrocarbon gas stream and a hydrocarbon liquid stream, wherein the hydrocarbon gas stream comprises at least a portion of the gas phase of the hydrocarbon product, wherein the hydrocarbon liquid stream comprises at least a portion of the liquid phase of the hydrocarbon product, wherein the hydrocarbon liquid stream comprises one or more chloride compounds in an amount of less than about 100 ppmw chloride, based on the total weight of the hydrocarbon liquid stream, and wherein the hydrocarbon liquid stream is characterized by a viscosity of less than about 400 cP at a temperature of 300° C.Type: ApplicationFiled: July 17, 2017Publication date: October 3, 2019Inventors: Alexander STANISLAUS, Ravichander NARAYANASWAMY, Krishna Kumar RAMAMURTHY, Santosh GANJI, Abrar A. HAKEEM, Ashim Kumar GHOSH, Girish KORIPELLY, Mohammad JAVEED
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Publication number: 20190247837Abstract: A method for preparing a hydrocracking catalyst comprising: (i) providing a shaped body comprising a zeolite and a binder, wherein the shaped body has been obtained by shaping, calcination and cooling, wherein the zeolite is ZSM-5 having a silica (SiO2) to alumina (Al2O3) molar ratio of 25-75; (ii) optionally drying the shaped body at a temperature of 100-300° C. for a period of at least 1 hour; (iii) depositing a hydrogenation metal on the shaped body by an impregnation for a period of at most 2 hours such that the amount of the hydrogenation metal is 0.010-0.30 wt % with respect to the total catalyst; (iv) optionally rinsing the metal deposited shaped body with water; and (v) heat-treating the metal deposited shaped body in air at a temperature of 250-300° C. for a period of 1-5 hours; wherein the catalyst comprises a total of less than 0.05 wt % sodium and cesium.Type: ApplicationFiled: October 17, 2017Publication date: August 15, 2019Inventors: Ashim Kumar GHOSH, Alla KHANMAMEDOVA, Scott A. STEVENSON
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Publication number: 20190062646Abstract: A process for reducing a chloride content of a hydrocarbon feed stream involving contacting a hydrocarbon feed stream comprising a chloride containing pyrolysis oil obtained by cracking a chloride containing thermoplastic material with a sulfided catalyst comprising at least one of Co, Mo, and Ni or a catalyst comprising Pd, Pt, Cu, and/or Zn on a catalyst support in the presence of hydrogen gas to reduce one or more organic chloride compounds present in the hydrocarbon feed stream and form a hydrocarbon product stream and HCl. The HCl is removed from the hydrocarbon product stream, wherein the hydrocarbon product stream has a lower chloride content than the hydrocarbon feed stream based on the total weight of the chloride and the total weight of the hydrocarbon feed stream.Type: ApplicationFiled: September 23, 2016Publication date: February 28, 2019Applicant: SABIC Global Technologies B.V.Inventors: Abrar A. HAKEEM, Ashim Kumar GHOSH
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Publication number: 20180353944Abstract: The invention relates to a process for preparing a hydrocracking catalyst, comprising (i) contacting a shaped body comprising a zeolite and a binder with an aqueous solution of a hydrogenation metal compound which is a complex or a salt of a hydrogenation metal to deposit the hydrogenation metal onto the shaped body, wherein the aqueous solution comprises an ammonium salt and (ii) calcining the shaped body obtained by step (i).Type: ApplicationFiled: December 5, 2016Publication date: December 13, 2018Inventors: Alla Khanmamedova, Ashim Kumar Ghosh, Scott Stevenson, David Sullivan, Pooja Bajaj
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Publication number: 20170368542Abstract: Disclosed is a catalyst capable of producing an olefin from an alkyl halide, the catalyst comprising a silicoaluminophosphate (SAPO) having a chabazite zeolite structure with the following chemical composition (SixAlyPz)O2, where x, y, and z represent the mole fractions of silicon, aluminum, and phosphorus, respectively, present as tetrahedral oxides, x is 0.01 to 0.30 and the sum of x+y+z is 1, and where the catalyst comprises silicon tetrahedral oxides that are connected with three or less aluminum tetrahedral oxide as shown by 29Si magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy peak(s) with peak(s) maxima between ?93 ppm and ?115 ppm.Type: ApplicationFiled: November 18, 2015Publication date: December 28, 2017Applicant: SABIC Global Technologies B.V.Inventors: Ashim Kumar Ghosh, Alla Khanmamedova, Mike Mier, Jonathan Banke
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Publication number: 20170362142Abstract: A method of producing a purified mixed xylene comprising: introducing toluene and methanol to an alkylation reactor; reacting the toluene and the methanol in the alkylation reactor to form a hydrocarbon stream comprising a first mixed xylene, wherein the alkylation reactor comprises an alkylation catalyst; separating the hydrocarbon stream into a toluene stream and a separated C8+ stream; introducing the toluene stream to a transalkylation reactor with a transalkylation catalyst to produce a transalkylated stream comprising a second mixed xylene; adding the transalkylated stream to the hydrocarbon stream; and separating a C8 product stream comprising the purified mixed xylene from the separated C8+ stream.Type: ApplicationFiled: August 29, 2017Publication date: December 21, 2017Inventors: Ashim Kumar Ghosh, Mohamed Elbaccouch, Mohammad Shafiei, Murali Gopalakrishnan
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Patent number: 9782758Abstract: In one embodiment, a formed catalyst can comprise: a Ge-ZSM-5 zeolite; a binder comprising silica with 1 to less than 5 wt % non-silica oxides; less than or equal to 0.1 wt % residual carbon; 0.4 to 1.5 wt % platinum; and 4.0 to 4.8 wt % Cs; wherein the weight percentages are based upon a total weight of the catalyst. In one embodiment, a method of making a formed catalyst can comprise: mixing an uncalcined Ge-ZSM-5 zeolite and a binder to form a mixture; forming the mixture into a formed zeolite; calcining the formed zeolite to result in the formed zeolite having less than or equal to 0.1 wt % of residual carbon; ion-exchanging the formed zeolite with cesium; depositing platinum on the formed zeolite; and heating the formed zeolite to result in a final catalyst; wherein the final catalyst comprises 4.0 to 4.8 wt % cesium and 0.4 to 1.5 wt % platinum.Type: GrantFiled: April 23, 2013Date of Patent: October 10, 2017Assignee: SAUDI BASIC INDUSTRIES CORPORATIONInventors: Ashim Kumar Ghosh, Scott Stevenson, Meghan Simmons, Michael Mier
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Patent number: 9783462Abstract: A method of producing a purified mixed xylene comprising: introducing toluene and methanol to an alkylation reactor (32); reacting the toluene and the methanol in the alkylation reactor (32) to form a hydrocarbon stream (22) comprising a first mixed xylene, wherein the alkylation reactor (32) comprises an alkylation catalyst; separating the hydrocarbon stream (22) into a toluene stream (24) and a separated C8+ stream (14); introducing the toluene stream (24) to a transalkylation reactor (38) with a transalkylation catalyst to produce a transalkylated stream (17) comprising a second mixed xylene; adding the transalkylated stream (17) to the hydrocarbon stream (22); and separating a C8 product stream (19) comprising the purified mixed xylene from the separated C8+ stream (14).Type: GrantFiled: September 10, 2013Date of Patent: October 10, 2017Assignee: SAUDI BASIC INDUSTRIES CORPORATIONInventors: Ashim Kumar Ghosh, Mohamed Elbaccouch, Mohammad Shafiei, Murali Gopalakrishnan
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Publication number: 20170152200Abstract: A method for converting lignin to a phenol product, the method comprising contacting a zeolite catalyst with a lignin under reaction conditions sufficient to produce the phenol product at a yield of equal to or greater than about 50%. A method for converting lignin to a mixed phenol product, the method comprising contacting a large-pore zeolite catalyst with a Kraft lignin under reaction conditions comprising a reaction temperature of from about 550° C. to about 850° C. to produce the mixed phenol product at a yield of equal to or greater than about 50%.Type: ApplicationFiled: October 25, 2016Publication date: June 1, 2017Inventors: Zhiqiang MA, Ashim Kumar GHOSH, Jeroen VAN BOKHOVEN
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Patent number: 9550178Abstract: Disclosed is a method for converting an alkyl halide to an olefin. The method includes contacting a silicoaluminophosphate (SAPO) catalyst with a feed that includes an alkyl halide under reaction conditions sufficient to produce an olefin hydrocarbon product that includes C2 to C4 olefins. The SAPO catalyst has bimodal acidity designated as weak acid sites and strong acid sites. The weak acid concentration is less than 0.55 mmol/g-cat and the total acid concentration is less than 1.5 mmol/g-cat.Type: GrantFiled: July 28, 2015Date of Patent: January 24, 2017Assignee: SABIC Global Technologies B.V.Inventors: Ashim Kumar Ghosh, Alla Khanmamedova, Mike Mier, Jonathan Banke
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Publication number: 20160362349Abstract: Disclosed are stable catalysts, and methods for their use, that are capable of producing an olefin from an alkyl halide. The catalysts include a phosphorus-treated silicoalummophosphate (SAPO) having a structure of X/SAPO or X/Z-SAPO, where X includes a non-framework phosphorus and Z is one or more elements from Groups 2A, 3A, IVB, VIB, VIIB, VIII, IB of the Periodic Table, or compounds thereof comprised in the SAPO framework.Type: ApplicationFiled: June 30, 2015Publication date: December 15, 2016Inventors: Ashim Kumar Ghosh, Neeta Kulkarni, Mike Mier