Patents by Inventor Munir D. Khokhar
Munir D. Khokhar 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: 20210170367Abstract: The present disclosure includes a metathesis catalyst comprising 80 weight percent to 99 weight percent catalyst support material and 1 weight percent to 20 weight percent catalytically active compound, based on the total weight of the metathesis catalyst. The catalyst support material may comprise carbon. The catalytically active compound may comprise tungsten and be supported by the catalyst support material. Methods of producing olefins through the metathesis of butene using the metathesis catalyst is also disclosed.Type: ApplicationFiled: December 5, 2019Publication date: June 10, 2021Applicant: Saudi Arabian Oil CompanyInventors: Maha Alsayegh, Munir D. Khokhar
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Publication number: 20210162384Abstract: Composite catalysts includes zeolite particles at least partially embedded in a catalyst support material and at least one catalytically active compound deposited on the outer surfaces and pore surfaces of the catalyst support material, zeolite particles, or both. A method of making the composite catalysts may include preparing a catalyst precursor mixture that includes the zeolite, catalyst support material, triblock copolymer surfactant, and the catalytically active compound precursor and spray drying the catalyst precursor mixture. The composite catalysts may be used as a single catalyst for conducting olefin metathesis and cracking reactions. A method for producing propene may include contacting a butene-containing feed with the composite catalysts.Type: ApplicationFiled: December 2, 2019Publication date: June 3, 2021Applicant: Saudi Arabian Oil CompanyInventors: Munir D. Khokhar, Zahra Almisbaa, Sohel K. Shaikh, Raed Abudawoud
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Publication number: 20210162394Abstract: Methods of producing an isomerization catalyst include preparing a catalyst precursor solution, hydrothermally treating the catalyst precursor solution to produce a magnesium oxide precipitant, and calcining the magnesium oxide precipitant to produce the isomerization catalyst. The catalyst precursor solution includes at least a magnesium precursor, a hydrolyzing agent, and polyethylene glycol. Methods of producing propene from a butene-containing feedstock with the isomerization catalyst and a metathesis catalyst are also disclosed.Type: ApplicationFiled: December 3, 2019Publication date: June 3, 2021Applicant: Saudi Arabian Oil CompanyInventors: Afnan Alghannam, Sohel K. Shaikh, Munir D. Khokhar, Faisal H. Alshafei
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Publication number: 20210162395Abstract: Methods of producing an isomerization catalyst include preparing a catalyst precursor solution, hydrothermally treating the catalyst precursor solution to produce a magnesium oxide precipitant, and calcining the magnesium oxide precipitant to produce the isomerization catalyst. The catalyst precursor solution includes at least a magnesium precursor, a hydrolyzing agent, and cetrimonium bromide. Methods of producing 1-butene from a 2-butene-containing feedstock with the isomerization catalyst are also disclosed.Type: ApplicationFiled: December 3, 2019Publication date: June 3, 2021Applicant: Saudi Arabian Oil CompanyInventors: Afnan Alghannam, Sohel K. Shaikh, Munir D. Khokhar
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Patent number: 10961171Abstract: Embodiments of methods of synthesizing a metathesis catalyst system, which include impregnating tungsten oxide on silica support in the presence of a precursor to produce a base catalyst; calcining the base catalyst; dispersing a solid metal-based co-catalyst onto the surface of the base catalyst to produce a doped catalyst; and calcining the doped catalyst to produce a metathesis catalyst system. Further embodiments of processes for the production of propylene, which include contacting a hydrocarbon feedstock comprising a mixture of 1-butene and 2-butene with embodiments of the metathesis catalyst system to produce, via metathesis conversion, a product stream comprising propylene.Type: GrantFiled: October 10, 2018Date of Patent: March 30, 2021Assignee: Saudi Arabian Oil CompanyInventors: Munir D. Khokhar, Mohammed R. Alalouni, Noor A. Sulais, Brian Hanna, Sohel K. Shaikh
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Patent number: 10934231Abstract: Processes and multiple-stage catalyst systems are disclosed for producing propene by at least partially isomerizing butene in an isomerization reaction zone having an isomerization catalyst to form an isomerization reaction product, at least partially metathesizing the isomerization reaction product in a metathesis reaction zone having a metathesis catalyst to form a metathesis reaction product, and at least partially cracking the metathesis reaction product in a cracking reaction zone having a cracking catalyst. The isomerization catalyst may be MgO, and the metathesis catalyst may be a mesoporous silica catalyst support impregnated with a metal oxide. The metathesis reaction zone may be downstream of the isomerization reaction zone, and the cracking reaction zone may be downstream of the metathesis reaction zone.Type: GrantFiled: January 10, 2018Date of Patent: March 2, 2021Assignee: Saudi Arabian Oil CompanyInventors: Faisal H. Alshafei, Munir D. Khokhar, Sohel K. Shaikh
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Patent number: 10919822Abstract: Processes and multiple-stage catalyst systems are disclosed for producing propylene from butene by at least partially metathesizing butene in a metathesizing reaction zone having a metathesis catalyst to form a metathesis reaction product and at least partially cracking the metathesis reaction product in a cracking reaction zone having a cracking catalyst to form a cracking reaction product that includes propylene. The metathesis catalyst may be a mesoporous silica-alumina catalyst support impregnated with metal oxide having a mesoporous silica-alumina catalyst support comprising from 5 weight percent to 50 weight percent alumina. The cracking catalyst may be a MFI structured silica-containing catalyst. The cracking reaction zone may be downstream of the metathesis reaction zone.Type: GrantFiled: April 22, 2019Date of Patent: February 16, 2021Assignee: Saudi Arabian Oil CompanyInventors: Munir D. Khokhar, Faisal H. Alshafei, Noor A. Sulais, Sohel K. Shaikh, Raed H. Abudawoud
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Patent number: 10906026Abstract: Provided here are catalyst compositions containing tungsten oxide on silica supports and prepared by spray drying a mixture containing a tungsten precursor, silica support, and a surfactant. Also provided here are methods of using the catalytic compositions, prepared by spray drying, in an olefin metathesis process to produce propylene from butenes.Type: GrantFiled: October 24, 2018Date of Patent: February 2, 2021Inventors: Faisal H. Alshafei, Munir D. Khokhar, Sohel K. Shaikh, Mohammed R. Alalouni, Gopal Juttu
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Publication number: 20200131099Abstract: Embodiments of processes and multiple-stage catalyst systems for producing propylene comprising introducing a hydrocarbon stream comprising 2-butene to an isomerization catalyst zone to isomerize the 2-butene to 1-butene, passing the 2-butene and 1-butene to a metathesis catalyst zone to cross-metathesize the 2-butene and 1-butene into a metathesis product stream comprising propylene and C4-C6 olefins, and cracking the metathesis product stream in a catalyst cracking zone to produce propylene. The isomerization catalyst zone comprises a silica-alumina catalyst with a ratio by weight of alumina to silica from 1:99 to 20:80. The metathesis catalyst comprises a mesoporous silica catalyst support impregnated with metal oxide. The catalyst cracking zone comprises a mordenite framework inverted (MFI) structured silica catalyst.Type: ApplicationFiled: December 12, 2019Publication date: April 30, 2020Applicant: Saudi Arabian Oil CompanyInventors: Faisal H. Alshafei, Munir D. Khokhar, Noor A. Sulais, Mohammed R. Alalouni, Sohel K. Shaikh
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Publication number: 20200115298Abstract: Embodiments of methods of synthesizing a metathesis catalyst system, which include impregnating tungsten oxide on silica support in the presence of a precursor to produce a base catalyst; calcining the base catalyst; dispersing a solid metal-based co-catalyst onto the surface of the base catalyst to produce a doped catalyst; and calcining the doped catalyst to produce a metathesis catalyst system. Further embodiments of processes for the production of propylene, which include contacting a hydrocarbon feedstock comprising a mixture of 1-butene and 2-butene with embodiments of the metathesis catalyst system to produce, via metathesis conversion, a product stream comprising propylene.Type: ApplicationFiled: October 10, 2018Publication date: April 16, 2020Applicant: Saudi Arabian Oil CompanyInventors: Munir D. Khokhar, Mohammed R. Alalouni, Noor A. Sulais, Brian Hanna, Sohel K. Shaikh
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Publication number: 20200115299Abstract: Embodiments of methods of synthesizing a metathesis catalyst system, which include impregnating tungsten oxide on silica support in the presence of a precursor to produce a base catalyst; calcining the base catalyst; impregnating a metal oxide co-catalyst comprising a metal oxide onto the surface of the base catalyst to produce a doped catalyst; and calcining the doped catalyst to produce a metathesis catalyst system. Further embodiments of processes for the production of propylene, which include contacting a hydrocarbon feedstock comprising a mixture of 1-butene and 2-butene with embodiments of the metathesis catalyst system to produce, via metathesis conversion, a product stream comprising propylene.Type: ApplicationFiled: October 10, 2018Publication date: April 16, 2020Applicants: Saudi Arabian Oil Company, Aramco Services CompanyInventors: Munir D. Khokhar, Mohammed R. Alalouni, Noor A. Sulais, Brian Hanna, Sohel K. Shaikh
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Publication number: 20200115300Abstract: Embodiments of methods of synthesizing a metathesis catalyst system, which include impregnating tungsten oxide on silica support in the presence of a precursor to produce a base catalyst; calcining the base catalyst; dispersing a solid metal-based co-catalyst onto the surface of the base catalyst to produce a doped catalyst; and calcining the doped catalyst to produce a metathesis catalyst system. Further embodiments of processes for the production of propylene, which include contacting a hydrocarbon feedstock comprising a mixture of 1-butene and 2-butene with embodiments of the metathesis catalyst system to produce, via metathesis conversion, a product stream comprising propylene.Type: ApplicationFiled: July 25, 2019Publication date: April 16, 2020Applicants: Saudi Arabian Oil Company, Aramco Services CompanyInventors: Munir D. Khokhar, Mohammed R. Alalouni, Noor A. Sulais, Brian Hanna, Sohel K. Shaikh
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Patent number: 10550048Abstract: Embodiments of processes and multiple-stage catalyst systems for producing propylene comprising introducing a hydrocarbon stream comprising 2-butene to an isomerization catalyst zone to isomerize the 2-butene to 1-butene, passing the 2-butene and 1-butene to a metathesis catalyst zone to cross-metathesize the 2-butene and 1-butene into a metathesis product stream comprising propylene and C4-C6 olefins, and cracking the metathesis product stream in a catalyst cracking zone to produce propylene. The isomerization catalyst zone comprises a silica-alumina catalyst with a ratio by weight of alumina to silica from 1:99 to 20:80. The metathesis catalyst comprises a mesoporous silica catalyst support impregnated with metal oxide. The catalyst cracking zone comprises a mordenite framework inverted (MFI) structured silica catalyst.Type: GrantFiled: January 17, 2018Date of Patent: February 4, 2020Assignee: Saudi Arabian Oil CompanyInventors: Faisal H. Alshafei, Munir D. Khokhar, Noor A. Sulais, Mohammed R. Alalouni, Sohel K. Shaikh
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Patent number: 10407363Abstract: Processes, systems, and catalysts for the conversion of 2-butene to 1,3-butaidene without the use of steam or, in some embodiments, with a reduced use of steam as compared to prior art processes are provided. The catalyst includes tungsten trioxide (WO3) on an inorganic support includes activated magnesium oxide (MgO) and may be referred to as a “dual catalyst” or a “co-catalyst.” Embodiments of the catalyst. A process for the production of 1,3-butadiene may include contacting a feed stream of 2-butene with a WO3-inorganic support catalyst or a MgO and WO3-inorganic support catalyst and may be performed without steam in the feed stream.Type: GrantFiled: August 16, 2017Date of Patent: September 10, 2019Assignee: Saudi Arabian Oil CompanyInventors: Faisal H. Alshafei, Miao Sun, Munir D. Khokhar, Zhonglin Zhang, Sohel K. Shaikh, Mark P. Kaminsky
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Publication number: 20190241488Abstract: Processes and multiple-stage catalyst systems are disclosed for producing propylene from butene by at least partially metathesizing butene in a metathesizing reaction zone having a metathesis catalyst to form a metathesis reaction product and at least partially cracking the metathesis reaction product in a cracking reaction zone having a cracking catalyst to form a cracking reaction product that includes propylene. The metathesis catalyst may be a mesoporous silica-alumina catalyst support impregnated with metal oxide having a mesoporous silica-alumina catalyst support comprising from 5 weight percent to 50 weight percent alumina. The cracking catalyst may be a MFI structured silica-containing catalyst. The cracking reaction zone may be downstream of the metathesis reaction zone.Type: ApplicationFiled: April 22, 2019Publication date: August 8, 2019Applicant: Saudi Arabian Oil CompanyInventors: Munir D. Khokhar, Faisal H. Alshafei, Noor A. Sulais, Sohel K. Shaikh, Raed H. Abudawoud
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Patent number: 10329225Abstract: Processes and multiple-stage catalyst systems are disclosed for producing propylene from butene by at least partially metathesizing butene in a metathesizing reaction zone having a metathesis catalyst to form a metathesis reaction product and at least partially cracking the metathesis reaction product in a cracking reaction zone having a cracking catalyst to form a cracking reaction product that includes propylene. The metathesis catalyst may be a mesoporous silica-alumina catalyst support impregnated with metal oxide having a mesoporous silica-alumina catalyst support comprising from 5 weight percent to 50 weight percent alumina. The cracking catalyst may be a MFI structured silica-containing catalyst. The cracking reaction zone may be downstream of the metathesis reaction zone.Type: GrantFiled: January 10, 2018Date of Patent: June 25, 2019Assignee: Saudi Arabian Oil CompanyInventors: Munir D. Khokhar, Faisal H. Alshafei, Noor A. Sulais, Sohel K. Shaikh, Raed H. Abudawoud
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Publication number: 20190118164Abstract: Provided here are catalyst compositions containing tungsten oxide on silica supports and prepared by spray drying a mixture containing a tungsten precursor, silica support, and a surfactant. Also provided here are methods of using the catalytic compositions, prepared by spray drying, in an olefin metathesis process to produce propylene from butenes.Type: ApplicationFiled: October 24, 2018Publication date: April 25, 2019Applicant: Saudi Arabian Oil CompanyInventors: Faisal H. Alshafei, Munir D. Khokhar, Sohel K. Shaikh, Mohammed R. Alalouni, Gopal Juttu
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Publication number: 20190055175Abstract: Processes, systems, and catalysts for the conversion of 2-butene to 1,3-butaidene without the use of steam or, in some embodiments, with a reduced use of steam as compared to prior art processes are provided. The catalyst includes tungsten trioxide (WO3) on an inorganic support includes activated magnesium oxide (MgO) and may be referred to as a “dual catalyst” or a “co-catalyst.” Embodiments of the catalyst. A process for the production of 1,3-butadiene may include contacting a feed stream of 2-butene with a WO3-inorganic support catalyst or a MgO and WO3-inorganic support catalyst and may be performed without steam in the feed stream.Type: ApplicationFiled: August 16, 2017Publication date: February 21, 2019Inventors: Faisal H. Alshafei, Miao Sun, Munir D. Khokhar, Zhonglin Zhang, Sohel K. Shaikh, Mark P. Kaminsky
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Publication number: 20180208526Abstract: Processes and multiple-stage catalyst systems are disclosed for producing propene by at least partially isomerizing butene in an isomerization reaction zone having an isomerization catalyst to form an isomerization reaction product, at least partially metathesizing the isomerization reaction product in a metathesis reaction zone having a metathesis catalyst to form a metathesis reaction product, and at least partially cracking the metathesis reaction product in a cracking reaction zone having a cracking catalyst. The isomerization catalyst may be MgO, and the metathesis catalyst may be a mesoporous silica catalyst support impregnated with a metal oxide. The metathesis reaction zone may be downstream of the isomerization reaction zone, and the cracking reaction zone may be downstream of the metathesis reaction zone.Type: ApplicationFiled: January 10, 2018Publication date: July 26, 2018Applicant: Saudi Arabian Oil CompanyInventors: Faisal H. Alshafei, Munir D. Khokhar, Sohel K. Shaikh
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Publication number: 20180208527Abstract: Processes and multiple-stage catalyst systems are disclosed for producing propylene from butene by at least partially metathesizing butene in a metathesizing reaction zone having a metathesis catalyst to form a metathesis reaction product and at least partially cracking the metathesis reaction product in a cracking reaction zone having a cracking catalyst to form a cracking reaction product that includes propylene. The metathesis catalyst may be a mesoporous silica-alumina catalyst support impregnated with metal oxide having a mesoporous silica-alumina catalyst support comprising from 5 weight percent to 50 weight percent alumina. The cracking catalyst may be a MFI structured silica-containing catalyst. The cracking reaction zone may be downstream of the metathesis reaction zone.Type: ApplicationFiled: January 10, 2018Publication date: July 26, 2018Applicant: Saudi Arabian Oil CompanyInventors: Munir D. Khokhar, Faisal H. Alshafei, Noor A. Sulais, Sohel K. Shaikh, Raed H. Abudawoud