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:
Aug. 24, 1993
Filed:
Sep. 18, 1991
Kenneth M Nicholas, Norman, OK (US);
Jing-Cherng Tsai, Norman, OK (US);
Board of Regents of the University of Oklahoma, Norman, OK (US);
Abstract
Oxidation/reduction processes catalyzed by soluble rhodium complexes of the type (L.sub.4or5 Rh)Z.sup.- wherein each L is selected from a group consisting essentially of monophosphines, diphosphines, olefins and coordinating solvents with the proviso that at least one L is a phosphine and Z is a weakly coordinating anion. In one embodiment, formic acid is produced by the hydrogenation of carbon dioxide. In another embodiment oxygen/carbon dioxide mixtures are used to oxidize organic compounds (ethers, amines, olefins) with coproduction of formic acid. In a third embodiment, these organic compounds are selectively oxidized by oxygen alone, without the coproduction of formic acid.