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:
Nov. 11, 2003
Filed:
Jul. 09, 2001
Garmt R. Meima, Terneuzen, NL;
Howard W. Clark, Midland, MI (US);
Robert G. Bowman, Midland, MI (US);
Alex Kuperman, Orinda, CA (US);
George E. Hartwell, Midland, MI (US);
Dow Global Technologies Inc., Midland, MI (US);
Abstract
A process and catalysts for the direct oxidation of an olefin having three or more carbon atoms, such as propylene, by oxygen to an olefin oxide, such as prbpylene oxide. The process involves contacting the olefin under reaction conditions with oxygen in the presence of hydrogen and a catalyst. The catalyst contains silver and titanium, optionally gold, and optionally, at least one promoter element selected from Group 1, Group 2, zinc, cadmium, the platinum group metals, the lanthanide rare earths, the actinide elements, and combinations thereof. In preferred embodiments, the catalyst is calcined prior to use, rather than reduced prior to use. Suitable titanium-containing supports include titanium dioxide, titanium dioxide on silica, titanosilicates, promoter metal titanates, titanium dispersed on silica and promoter metal silicates.