Patents by Inventor Sami A. I. Barri
Sami A. I. Barri 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: 7268268Abstract: A process for the dimerization of at least one olefin with a carbon number between 2 and 10 by contacting the feed with a catalyst system comprising at least: (a) tectometallosilicate zeolite with having TON-type structure, (b) tectometallosilicate zeolite with having MTT-type structure, (c) tectometallosilicate zeolite with the same structure as that of the ZSM-48 zeolite, or (d) silicoaluminophosphate (SAPO) zeo-type with AEL-type structure; under dimerization condition to produce highly branched olefins.Type: GrantFiled: April 19, 2001Date of Patent: September 11, 2007Assignee: Saudi Basic Industries CorporationInventors: Farouk al-Soufi, Sami A. I. Barri, Yajnavalkya Subrai Bhat, Altaf Husain
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Publication number: 20040030212Abstract: A process for the dimerization of at least one olefin with a carbon number between 2 and 10 by contacting the feed with a catalyst system comprising at least: (a) tectometallosilicate zeolite with having TON-type structure, (b) tectometalloslicate zeolite with having MTT-type structure, (c) tectometallosilicate zeolite with the same structure as that of the ZSM-48 zeolite, or (d) silicoaluminophosphate (SAPO) zeo-type with AEL-type structure; under dimerization condition to produce highly branched olefins.Type: ApplicationFiled: June 30, 2003Publication date: February 12, 2004Inventors: Farouk Al-Soufi, Sami A.I. Barri, Yajnavalkya Subrai Bhat, Altaf Husain
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Patent number: 5605631Abstract: Novel membranes comprise crystals of a zeo-type material carried by a porous support. The crystal growth of the zeo-type material is essentially continuous over the pores of the support and the zeo-type material is crystallized directly from and bonds directly to the support. Membranes may be prepared by immersing the support in a synthesis gel, crystallizing the gel, removing the support, and repeating these steps at least once.Type: GrantFiled: June 6, 1995Date of Patent: February 25, 1997Assignee: The British Petroleum Company, P.L.C.Inventors: Sami A. I. Barri, Graham J. Bratton, Timothy d. Naylor
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Patent number: 5567664Abstract: Novel membranes comprise crystals of a zeo-type material carried by a porous support. The crystal growth of the zeo-type material is essentially continuous over the pores of the support and the zeo-type material is crystallized directly from and bonds directly to the support. Membranes may be prepared by immersing the support in a synthesis gel, crystallizing the gel, removing the support, and repeating these steps at least once.Type: GrantFiled: August 4, 1994Date of Patent: October 22, 1996Assignee: British Petroleum Company, p.l.cInventors: Sami A. I. Barri, Graham J. Bratton, Timothy D. Naylor
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Patent number: 5434328Abstract: This invention relates to a process for restructuring an olefinic feedstock rich in linear olefins into a product olefin of narrower composition which is richer in branched olefins than the starting feedstock. Such restructuring is achieved by contacting the feedstock with an unmodified or partially modified tectometallosilicate of the Theta-1 type at relatively low temperatures. The product olefins are valuable as petrochemical feedstock for producing polyolefins, alcohols, ethers and other oxygenates, surfactants, alkyl aromatics and oligomers useful as gasoline blending components.Type: GrantFiled: April 30, 1987Date of Patent: July 18, 1995Assignee: The British Petroleum Company p.l.c.Inventors: Sami A. I. Barri, Rabaab Tahir, David W. Walker
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Patent number: 5362522Abstract: Novel membranes comprise crystals of a zeo-type material carried by a porous support. The crystal growth of the zeo-type material is essentially continuous over the pores of the support and the zeo-type material is crystallized directly from and bonds directly to the support. Membranes may be prepared by immersing the support in a synthesis gel, crystallizing the gel, removing the support, and repeating these steps at least once.Type: GrantFiled: January 27, 1993Date of Patent: November 8, 1994Assignee: The British Petroleum Company, p.l.c.Inventors: Sami A. I. Barri, Graham J. Bratton, Timothy de Villiers Naylor
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Patent number: 5342596Abstract: Novel crystalline alumino silicates having the following composition in terms of the mole ratio of the oxides:0.9.+-.0.2 M.sub.2 n :Al.sub.2 O.sub.3 :x SiO.sub.2 :yH.sub.2 Owherein M is at least one cation having a valence n, x is at least 10 and y/x is between 0 and 25, said aluminosilicates having a characteristic X-ray diffraction pattern. The cation M in the aluminosilicates is preferably selected from H.sup.+, ammonium, alkali metal cations, alkaline earth metal cations, organic nitrogencontaining cations, aluminum cations, gallium cations and mixtures thereof. The invention also comprises a process for producing the aluminosilicate by mixing together a source of silica, a source of alumina, a source of alkali metal(s), water and diethanolamine until a homogeneous gel is formed and crystallizing the mixture at a temperature above 70.degree. C. for a period of at least 2 hours.Type: GrantFiled: December 29, 1981Date of Patent: August 30, 1994Assignee: The British Petroleum Company LimitedInventors: Sami A. I. Barri, Philip Howard, Clive D. Telford
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Patent number: 5210364Abstract: A process for the production of olefins which comprises passing an oxygenate-containing feedstock over a zeo type catalyst at a temperature greater than 200.degree. C. characterized in that the oxygenate-containing feedstock comprises C.sub.3 and/or C.sub.4 olefins and as oxygenate methanol formaldehyde and/or dimethylether, the molar ratio of olefin to oxygenate being greater than 1:20 and the zeo type catalyst being of TON-type structure.Type: GrantFiled: November 7, 1991Date of Patent: May 11, 1993Assignee: The British Petroleum Co., p.l.c.Inventors: Sami A. I. Barri, David A. Kidd
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Patent number: 5208201Abstract: A catalyst which comprises zinc, together with an effective amount of a platinum group metal on a support which is a material having the silicalite structure, the framework of said material consisting essentially of silicon and oxygen atoms or of silicon, zinc and oxygen atoms. There is also provided a process for the dehydrogenation of a C.sub.2 to C.sub.10 paraffin to yield an alkene product which process comprises contacting the paraffin under dehydrogenation conditions with a catalyst according to the invention.Type: GrantFiled: December 16, 1991Date of Patent: May 4, 1993Assignee: The British Petroleum Company p.l.c.Inventors: Sami A. I. Barri, Rabaab Tahir
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Patent number: 5126502Abstract: A catalyst which comprises zinc, together with an effective amount of a platinum group metal on a support which is a material having the silicalite structure, the framework of said material consisting essentially of silicon and oxygen atoms or of silicon, zinc and oxygen atoms. There is also provided a process for the dehydrogenation of a C.sub.2 to C.sub.10 paraffin to yield an alkene product which process comprises contacting the paraffin under dehydrogenation conditions with a catalyst according to the invention.Type: GrantFiled: July 11, 1989Date of Patent: June 30, 1992Assignee: British Petroleum Company p.l.c.Inventors: Sami A. I. Barri, Rabaab Tahir
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Patent number: 5118653Abstract: A catalyst which is substantially free of alkali and alkaline earth metals and comprises an effective amount of a platinum group metal on a silicalite support; characterised in that the catalyst also comprises tin. There is also provided a process for the dehydrogenation of a C.sub.2 to C.sub.10 paraffin to yield an alkene product, which comprises contacting the paraffin under dehydrogenation conditions with a catalyst according to the invention.Type: GrantFiled: May 22, 1990Date of Patent: June 2, 1992Assignee: The British Petroleum Company, p.l.c.Inventors: Sami A. I. Barri, Rabaab Tahir
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Patent number: 5118483Abstract: A crystalline material having, in the dehydrated form the empirical formula:m(M.sub.2/a O): X.sub.z O.sub.xz/2 : yYO.sub.2 (I)in which m is 0.5 to 1.5; M is a cation of valency a; X is a metal of valency x, selected from aluminium, boron, gallium zinc, iron and titanium; z is 2 when x is an odd number, an z is 1 when x is an even number; y is at least 5; and Y is silicon or germanium; and having, in the calcined hydrogen form, an X-ray diffraction pattern including significant peaks substantially as shown in table I herein. The material has been designated SUZ-4.Type: GrantFiled: September 27, 1992Date of Patent: June 2, 1992Assignee: The British Petroleum Company p.l.c.Inventor: Sami I. Barri
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Patent number: 5041205Abstract: A crystalline material having, in the dehydrated form, the empirical formula:m(M.sub.2/a O):X.sub.z O.sub.xz/2 :.sub.y YO.sub.2 (I)in which m is 0.5 to 1.5; M is a cation of valency a; X is a metal of valency x, selected from aluminium, boron, gallium, zinc, iron and titanium; z is 2 when x is an odd number, and z is 1 when x is an even number; y is at least 5; and Y is silicon or germanium; and having, in the calcined hydrogen form, an X-ray diffraction pattern including significant peaks substantially as shown in Table I herein. The material has been designated SUZ-2, and is used in the conversion of hydrocarbons or oxygenates.Type: GrantFiled: September 13, 1990Date of Patent: August 20, 1991Assignee: The British Petroleum Company p.l.c.Inventor: Sami A. I. Barri
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Patent number: 4982047Abstract: A catalyst which is substantially free of alkali and alkaline earth metals and comprises an effective amount of a platinum group metal on a silicalite support; characterized in that the catalyst also comprises tin. There is also provided a process for the dehydrogenation of a C.sub.2 to C.sub.10 paraffin to yield an alkene product, which comprises contacting the paraffin under dehydrogenation conditions with a catalyst according to the invention.Type: GrantFiled: June 23, 1989Date of Patent: January 1, 1991Assignee: The British Petroleum Company, p.l.c.Inventors: Sami A. I. Barri, Rabaab Tahir
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Patent number: 4975258Abstract: A crystalline material having, in the dehydrated form, the empirical formula:m(m.sub. 2/a O):X.sub.z O.sub.xz/2 :.sub.y YO.sub.2 (I)in which m is 0.5 to 1.5; M is a cation of valency a; X is a metal of valency x, selected from aluminum, boron, gallium, zinc, iron and titanium; z is 2 when x is an odd number, and z is 1 when x is an even number; y is at least 5; and Y is silicon or germanium; and having, in the calcined hydrogen form, an X-ray diffraction pattern including significant peaks substantially as shown in Table I herein. The material has been designated SUZ-2.Type: GrantFiled: July 27, 1989Date of Patent: December 4, 1990Assignee: The British Petroleum Company, p.l.c.Inventor: Sami I. Barri
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Patent number: 4795732Abstract: Alkanes are dehydrogenated to alkenes, for example n-butane to n-butenes by contact with a catalyst comprising a silicalite and a platinum group metal the catalyst being substantially free of alkali and alkaline earth metals. The selectivity of the product to butenes is improved by either presulphiding the catalyst or by passing a minor amount of a sulphur-containing compound with the alkane feed.The catalyst can be prepared by either forming the silicalite in the presence of the platinum group metal or alternatively contacting preformed silicalite with a solution of a platinum group metal.Type: GrantFiled: December 19, 1986Date of Patent: January 3, 1989Assignee: The British Petroleum Company p.l.c.Inventor: Sami A. I. Barri
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Patent number: 4665267Abstract: Alkanes are dehydrogenated to alkenes, for example n-butane to n-butenes by contact with a catalyst comprising a silicalite and a platinum group metal the catalyst being substantially free of alkali and alkaline earth metals. The selectivity of the product to butenes is improved by either presulphiding the catalyst or by passing a minor amount of a sulphur-containing compound with the alkane feed.The catalyst can be prepared by either forming the silicalite in the presence of the platinum group metal or alternatively contacting preformed silicalite with a solution of a platinum group metal.Type: GrantFiled: July 17, 1986Date of Patent: May 12, 1987Assignee: The British Petroleum CompanyInventor: Sami A. I. Barri
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Patent number: 4654454Abstract: This invention relates to a process for selective dealumination, particularly surface dealumination of zeolites by sequential ion-exchange and calcination. The process is selective in the sense that the aluminum atoms within the pore structure of the zeolite remain virtually intact.The surface dealuminated zeolites can be used, after loading with a gallium compound, as catalysts in hydrocarbon conversion reactions.Type: GrantFiled: June 13, 1986Date of Patent: March 31, 1987Assignee: The British Petroleum Company p.l.c.Inventors: Sami A. I. Barri, Timothy K. McNiff
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Patent number: 4654316Abstract: This invention relates to a process for selective dealumination, particularly surface dealumination of zeolites by sequential ion-exchange and calcination. The process is selective in the sense that the aluminium atoms within the pore structure of the zeolite remain virtually intact.The surface dealuminated zeolites can be used, after loading with a gallium compound, as catalysts in hydrocarbon conversion reactions.Type: GrantFiled: August 2, 1985Date of Patent: March 31, 1987Assignee: The British Petroleum Company p.l.c.Inventors: Sami A. I. Barri, Timothy K. McNiff
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Patent number: 4585641Abstract: This invention relates to crystalline gallosilicates having the following composition in terms of the mole ratios of the oxides:0.9.+-.0.25M.sub.2 /.sub.n O:Ga.sub.2 O.sub.3 :xSiO.sub.2 :yH.sub.2 O.zQwherein M is at least one cation having a valence n, x is at least 10, y/x is from 0 to 30, Q is a template used in the synthesis of the gallosilicate and z/x is 0-20, wherein the gallosilicate in the organic free hydrogen-form has an X-ray diffraction pattern substantially as set forth in Table A of this specification. The gallosilicates may be used, whether or not impregnated and/or ion-exchanged, admixed, supported or bound, for catalyzing a reaction selected from alkylation, dealkylation, dehydrocyclodimerization, aromatization, transalkylation, isomerization, dehydrogenation, hydrogenation, cracking, hydrocracking, cyclization, oligomerization, polymerization, conversion of carbon monoxide/hydrogen mixtures to hydrocarbons and dehydration reactions.Type: GrantFiled: May 15, 1985Date of Patent: April 29, 1986Assignee: The British Petroleum Company P.L.C.Inventors: Sami A. I. Barri, Dennis Young