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:
Jun. 30, 2009
Filed:
Sep. 26, 2007
Nabil Rizkalla, Rivervale, NJ (US);
Barry Jay Billig, Irvington, NY (US);
Norma B. Castagnola, East Windsor, NJ (US);
Nabil Rizkalla, Rivervale, NJ (US);
Barry Jay Billig, Irvington, NY (US);
Norma B. Castagnola, East Windsor, NJ (US);
SD Lizenzverwertungsgesellschaft mbH & Co. KG, Munich, DE;
Abstract
A process for initiating a highly selective ethylene oxide catalyst is provided in which the highly selective ethylene oxide catalyst is operated first as a 'standard' Ag-based catalyst (e.g., a catalyst that contains only silver and alkali metal, especially cesium). Moreover, the inventive initiation procedure is more efficient when the concentration of carbon dioxide in the feed is higher than 6 vol. %, and even more efficient when the concentration of carbon dioxide in the feed is higher than 10 vol. %, of the feed mixture during the initiation period.