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. 04, 2011
Filed:
Nov. 16, 2007
Seung Hoon OH, Seoul, KR;
Sang IL Lee, Daejeon, KR;
Kyeong Hak Seong, Daejeon, KR;
Jong Hyung Lee, Daejeon, KR;
Kyung Jong OH, Daejeon, KR;
Seung Hoon Oh, Seoul, KR;
Sang Il Lee, Daejeon, KR;
Kyeong Hak Seong, Daejeon, KR;
Jong Hyung Lee, Daejeon, KR;
Kyung Jong Oh, Daejeon, KR;
SK Energy Co., Ltd., Seoul, KR;
Abstract
Disclosed herein is a catalyst for xylene isomerization, including: a carrier including a zeolite, having a molar ratio of silica to alumina of 20˜100, impregnated with or mixed with a metal salt (I) having an amount of a metal component of 0.05˜5.0 wt % relative to a zeolite, and an inorganic binder, in which an amount of the zeolite is 10˜90 wt % based on the total amount of the carrier, wherein the carrier is supported with a VIII group metal such that an amount of the VIII group metal is 0.001˜3.0 wt % based on a total amount of the catalyst, or is supported with the VII group metal additionally supported with tin, bismuth or lead such that an amount of the tin, bismuth or lead is 0.01-5.0 wt % based on the total amount of the catalyst, and a method of producing the catalyst. The catalyst for xylene isomerization is advantageous in that, when xylene or C8 aromatic compounds are isomerized using the catalyst, the ethylbenzene conversion is increased while the xylene loss is decreased, compared to conventional technologies.