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:
May. 26, 2009
Filed:
Nov. 21, 2006
Won Ho Lee, Daejeon, KR;
Dong IL Lee, Gyeonggi-do, KR;
Jong Hyun Chae, Daejeon, KR;
Hyun Kyung Yoon, Seoul, KR;
Won Ho Lee, Daejeon, KR;
Dong Il Lee, Gyeonggi-do, KR;
Jong Hyun Chae, Daejeon, KR;
Hyun Kyung Yoon, Seoul, KR;
LG Chem Ltd., Seoul, KR;
Abstract
The present invention relates to a novel method for preparing a catalyst of the formula (1),WOx wherein, W represents tungsten atom, O represents oxygen atom x represents a value determined by oxidative state of W, for partial oxidation of methylbenzenes, the method comprising: (a) a step of preparing tungsten oxide slurry by wet milling; (b) a step of supporting the slurry obtained in the step (a) on fire-resistance inorganic carrier by impregnation; (c) a step of drying the catalyst obtained in the step (b); and (d) a step of calcining the dried catalyst obtained in the step (c), and can reduce the reaction temperature on the basis of equivalent yield in the preparation of corresponding aromatic aldehyde from methylbenzenes since the catalyst has increased the surface areas compared to the conventional one, and thus has high conversion rate.