Silicon Containing Catalyst Patents (Class 568/786)
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Publication number: 20140057778Abstract: The present invention relates to a novel sulfonated carbon silica (SCS) composite material and a process for the preparation thereof. The synthesized SCS composite material on calcination yields the hierarchical mesoporous silica (MS) and further finds application as catalyst in two industrially important reactions namely phenol butylation and glycerol acetalization.Type: ApplicationFiled: September 20, 2012Publication date: February 27, 2014Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCHInventors: NAGABHATLA VISWANADHAM, DEVAKI NANDAN
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Patent number: 7692047Abstract: The present invention relates to an improved process for the selective alkylation of phenols using heteropolyacid catalyst supported onto zirconia under mild conditions. The process is economically viable since the catalyst regenerated after the initial reaction on further use gives the product in high yield.Type: GrantFiled: September 26, 2007Date of Patent: April 6, 2010Assignee: Secretary, Department of Science & TechnologyInventors: Anjali Uday Patel, Nikunj Bhagwatiprasad Bhatt
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Patent number: 6670513Abstract: An alkylated hydroxyl-containing aromatic compound is produced by isomerizing a normal alpha-olefin having from about 16 to about 30 carbon atoms in the presence of a first solid, acidic catalyst capable of inducing both olefin isomerization and skeletal isomerization to produce a mixture of isomerized olefin, then alkylating an hydroxyl-containing aromatic compound with the mixture of isomerized olefins in the presence of a second solid, acidic catalyst. The first solid, acidic catalyst can be SM-3, MAPO-11, SAPO-11, SSZ-32, ZSM-23, MAPO-39, SAPO-39, ZSM-22, SSZ-20, ZSM-35, SUZ-4, NU-23, NU-87, natural ferrierite or synthetic ferrierite. The second solid, acidic catalyst can be a sulfonic acid anionic ion exchange resin catalyst or an acidic clay.Type: GrantFiled: December 3, 1999Date of Patent: December 30, 2003Assignees: Chevron Oronite Company, LLC, Chevron Oronite S.A.Inventors: Curtis Bay Campbell, Jean Louis Le Coënt
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Patent number: 5288927Abstract: There is provided a process for reacting phenol with butene or butanol over fairly large-pore zeolites to give butylphenol with high para-selectivity. Particular zeolites for use in this reaction include ZSM-12 and zeolite beta. A particular butene or butanol reactant is isobutanol. The product of this reaction may have a high content of the mono-alkylated, tert-butyl product.Type: GrantFiled: February 1, 1993Date of Patent: February 22, 1994Assignee: Mobil Oil Corp.Inventors: Clarence D. Chang, Stuart D. Hellring
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Patent number: 5243116Abstract: Alkylated benzenes such as ethylbenzene and cumene are produced by alkylation and/or transalkylation in the presence of an acidic mordenite zeolite catalyst having a silica/alumina molar ratio of at least 30:1 and a crystalline structure which is determined by X-ray diffraction to be a matrix of Cmcm symmetry having dispersed therein domains of Cmmm symmetry.Type: GrantFiled: December 22, 1989Date of Patent: September 7, 1993Assignee: The Dow Chemical CompanyInventors: Guo-shuh J. Lee, Juan M. Garces, Garmt R. Meima, Matheus J. M. van der Aalst
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Patent number: 5175375Abstract: The invention relates to producing ortho isopropyl phenol catalytically by contacting phenol with isopropanol or propylene, at a temperature of from about 200.degree. C. to about 300.degree. C., with ZSM-12 and zeolite Beta; and recovering ortho isopropyl phenol.Type: GrantFiled: October 11, 1991Date of Patent: December 29, 1992Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Stuart D. Hellring
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Patent number: 5098945Abstract: A composition containing a) a polystyrene, substituted polystyrene, copolymer or terpolymer of styrene or of a substituted styrene, polycarbonate, polyester-carbonate, polyurethane, polyamide copolyamide, polyacetyl or polyphenylene oxide and b) at least one compound of the formula I ##STR1## in which R.sub.1 is methyl or ethyl and R.sub.2 is C.sub.2 -C.sub.30 alkyl.Compounds of the formula I in which R.sub.2 is C.sub.8 -C.sub.30 alkyl are novel and are suitable for stabilizing organic materials against thermal, oxidative and actinic degradation.Type: GrantFiled: February 11, 1991Date of Patent: March 24, 1992Assignee: Ciba-Geigy CorporationInventors: Rita Pitteloud, Paul Dubs
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Patent number: 4359591Abstract: This invention relates to a process for reacting phenol, mono- and di-alkyl phenols having at least one free o-position with methanol and/or dimethyl ether in the gas phase to form o-substituted phenols in the presence of a catalyst of oxides of iron, chromium, silicon and at least one oxide of an alkaline-earth metal, lanthanum and manganese or in the presence of a catalyst of oxides of iron, chromium, a metal from the group comprising germanium, titanium, zirconium, tin, lead, and at least one oxide of an alkali metal, alkaline-earth metal, lanthanum and manganese.Type: GrantFiled: March 30, 1981Date of Patent: November 16, 1982Assignee: Union Rheinische Braunkohlen Kraftstoff AktiengesellschaftInventors: Max Fremery, Karl-Heinz Keim, Joachim Korff
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Patent number: 4283573Abstract: A method for producing long chain-length alkylphenols with preferential production of para-alkylphenols and placement of the phenolic moiety at the #2 position on the alkyl chain. The reaction is carried out in the presence of crystalline zeolites having a major pore dimension of about six to seven angstrom units.Type: GrantFiled: November 20, 1979Date of Patent: August 11, 1981Assignee: Mobil Oil CorporationInventor: Lewis B. Young