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:
Oct. 14, 2008
Filed:
Oct. 13, 2004
Tammy Georgette Amos, Hockessin, DE (US);
Velliyur Nott Mallikarjuna Rao, Wilmington, DE (US);
Allen Capron Sievert, Elkton, MD (US);
Shekhar Subramoney, Hockessin, DE (US);
Tammy Georgette Amos, Hockessin, DE (US);
Velliyur Nott Mallikarjuna Rao, Wilmington, DE (US);
Allen Capron Sievert, Elkton, MD (US);
Shekhar Subramoney, Hockessin, DE (US);
E.I. du Pont de Nemars and Company, Wilmington, DE (US);
Abstract
A chromium-containing catalyst is disclosed which includes both ZnCrOand crystalline α-chromium oxide. The ZnCrOcontains between about 10 atom percent and 67 atom percent of the chromium in the composition and at least about 70 atom percent of the zinc in the composition, and at least about 90 atom percent of the chromium present as chromium oxide in the composition is present as ZnCrOor crystalline α-chromium oxide. Also disclosed are a method for preparing this composition comprising ZnCrOand crystalline α-chromium oxide; and a chromium-containing catalyst composition prepared by treatment of the composition comprising ZnCrOand crystalline α-chromium oxide with a fluorinating agent. Also disclosed is a process for changing the fluorine distribution in a halogenated hydrocarbon, or incorporating fluorine in a saturated or unsaturated hydrocarbon, in the presence of at least one composition selected from the group consisting of (i) the ZnCrOand crystalline α-chromium oxide compositions and (ii) the ZnCrOand crystalline α-chromium oxide compositions which have been treated with a fluorinating agent.