The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 1980
Filed:
Feb. 14, 1978
Leon M Polinski, North Plainfield, NJ (US);
Engelhard Minerals & Chemicals Corporation, Iselin, NJ (US);
Abstract
Catalysts having good high temperature stability which are particularly useful for carrying out high temperature reactions, such as combustion reactions at temperatures of the order of 1000.degree.-1400.degree. C., are disclosed. The catalytically active materials include precious metals, base metals or their oxides, or precious metals in combinstion with base metals, deposited on a catalyst slip or composite which contains alumina in admixture with a metal oxide component. The metal oxide component consists of a mixture of strontia or barium oxide with either molybdenum trioxide, zirconia, silica, or stannous oxide, or of a mixture of lanthana with either silica or stannous oxide. The slips or carrier compositions are calcined at a temperature of at least 500.degree. C. before deposition of the precious metal or base metal material, and are characterized by having a surface area of at least 20 m.sup.2 /g after calcination at a temperature of 1200.degree. C. for 4 hours.