Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Sulfur or compound containing same
Reexamination Certificate
2004-04-21
2008-10-28
Lorengo, Jerry (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Sulfur or compound containing same
C423S594900, C423S618000
Reexamination Certificate
active
07442668
ABSTRACT:
An object is to provide a sulfated tin oxide catalyst with strong catalytic activity, and a method for preparation thereof. It was discovered that in the preparation of a solid acid catalyst containing tin, stronger solid acid properties than before could be achieved by preparing a support comprising a crystalline tin oxide, preferably metastannic acid, bringing this support into contact with organic acid ions, then bringing it into contact with a sulfate group-containing compound, and then calcining it. The solid acid catalyst of the present invention has a tin content of 30% or more by weight as metal in the catalyst, a sulfate group supported thereon and an argon adsorption heat of more than 30 kJ/mol, and is used in acid-catalytic reactions.
REFERENCES:
patent: 1529261 (1925-03-01), Lubowsky
patent: 4041144 (1977-08-01), Obara et al.
patent: 4048294 (1977-09-01), Gloskey et al.
patent: 4208537 (1980-06-01), Kawamata et al.
patent: 4478812 (1984-10-01), Lane
patent: 5652192 (1997-07-01), Matson et al.
patent: 6376701 (2002-04-01), Chavan et al.
patent: 7211681 (2007-05-01), Furuta
patent: 59-182229 (1984-10-01), None
patent: 9-75735 (1997-03-01), None
“Catalytic action of sulfated tin oxide for etherification and exterification in comparison with sulfated zirconia,” Satoshi Furuta et al. Applied Catalysis A: General 269 Aug. 18, 2004, pp. 187-191.
“Biodiesel fuel production with solid amorphous-zirconia catalysis in fixed bed reactor,” Satoshi Furuta et al. Biomass and Bioenergy 30 Jul. 7, 2006, pp. 870-873.
“Solid Catalyst treated with Anion XIX: Synthesis of the Solid Superacid Catalyst of Tin Oxide treated with Sulfate Ion,” Hiromi Matsuhashi et al. Applied Catalysis, 59 (1990), pp. 205-212.
“Catalytic action of sulfated tin oxide for etherification and esterification in comparison with sulfated zirconia,” Satoshi Furuta et al. Applied Catalysis A: General 269 (2004), pp. 187-191.
“Surface characterization and catalytic activity of sulfated tin oxide catalyst,” A. S. Khder et al. Catalysis Communications 9 (2008), pp. 769-777.
“meta-Stannic acid as an effective support for the preparation of sulfated and tungstated stannias,” Makoto Hino et al. Applied Catalysis A: General 321 (2007), pp. 147-154.
Transition metal oxides additivated with sulphate or phosphate as catalysts for the cracking of cumene and supports for sulphided nickel-tungsten hydrocracking catalysts, by A. C. B. dosSantos et al,Applied Catalysts A: General, Elsevier Science, , vol. 153, 1997, pp. 83-101.
Finely Dispersed Iron, Iron-Molybdenum, and Sulfated Iron Oxides as Catalysts for Coprocessing Reactions, by V.R. Pradhan et al,Energy&Fuels, vol. 5, No. 5, 1991, pp. 712-720.
Hiromi Matsuhashi, “Preparation of a Solid Superacid of Sulfated Tin Oxide with Acidity Higher Than That of Sulfated Zirconia and Its Applications to Aldol Condensation and Benzoylation”, Chem. Mater., 2001, vol. 13, No. 9, pp. 3038 to 3042.
Flynn ,Thiel, Boutell & Tanis, P.C.
Hailey Patricia L
Japan Energy Corporation
Lorengo Jerry
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