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:
Sep. 29, 2009
Filed:
Jul. 29, 2008
Takashi Kodama, Kitakyushu, JP;
Tsuguo Koyanagi, Kitakyushu, JP;
Takashi Kodama, Kitakyushu, JP;
Tsuguo Koyanagi, Kitakyushu, JP;
JGC Catalysts and Chemicals Ltd., Kawasaki-shi, Kanagawa, JP;
Abstract
The present invention provides a catalytic composition for oxychlorination excellent in the fluidity, the capability of suppressing lowering of the fluidity, and the attrition resistance as well as in the selectivity for EDC and the capability of suppressing combustion of ethylene. The catalytic composition for oxychlorination contains silica alumina particles in the range from 5 to 40 wt % when expressed as an oxide thereof, copper in the range from 5 to 20 wt % when expressed as an oxide thereof (CuO), and alumina as a carrier in the range from 40 to 90 wt % when expressed as that of AlO. The silica alumina particles are prepared by coating silica particles with alumina, and have the average particle diameter in the range from 3 to 100 nm. A content of alumina in the silica alumina particles is in the range from 0.1 to 10 wt %.