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.

Date of Patent:
Apr. 26, 2016

Filed:

Feb. 07, 2014
Applicant:

Scientific Design Company, Inc., Little Ferry, NJ (US);

Inventors:

Wojciech Suchanek, Wyckoff, NJ (US);

Andrzej Rokicki, Mountain Lakes, NJ (US);

Assignee:

Scientific Design Company, Inc., Little Ferry, NJ (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 23/66 (2006.01); B01J 21/04 (2006.01); B01J 23/50 (2006.01);
U.S. Cl.
CPC ...
B01J 23/66 (2013.01); B01J 21/04 (2013.01); B01J 23/50 (2013.01); Y02P 20/52 (2015.11);
Abstract

Silver based ethylene oxide catalysts having enhanced stability are disclosed. The enhanced stability silver based ethylene oxide catalysts include an alumina carrier which has been modified to include cavities on the surface of the carrier. The presence of the cavities on the surface of the modified carrier stops or at least impedes the motion of silver particles on the surface of the carrier during an epoxidation process. In particular, the cavities on the surface of the alumina carrier effectively trap and/or anchor silver particles and prevent them from further motion.


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