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. 27, 2014
Filed:
Jun. 22, 2012
Sung Hyeon Baeck, Seoul, KR;
Geon Joong Kim, Seoul, KR;
Dong-kyun Noh, Gyeonggi-do, KR;
Tae Young Jang, Jeollabuk-do, KR;
Tae-yun Kim, Incheon, KR;
Young Soo Ahn, Ulsan, KR;
Chan-ju Song, Ulsan, KR;
Sang-cheol Paik, Ulsan, KR;
Sung Hyeon Baeck, Seoul, KR;
Geon Joong Kim, Seoul, KR;
Dong-Kyun Noh, Gyeonggi-do, KR;
Tae Young Jang, Jeollabuk-do, KR;
Tae-Yun Kim, Incheon, KR;
Young Soo Ahn, Ulsan, KR;
Chan-ju Song, Ulsan, KR;
Sang-Cheol Paik, Ulsan, KR;
S-Oil Corporation, Seoul, KR;
Inha-Industry Partnership Institute, Incheon, KR;
Abstract
Disclosed is a method for selective dealkylation of alkyl-substituted C+ aromatic compounds using a bimodal porous dealkylation catalyst at a low temperature. The catalyst has a bimodal porous structure including both mesopores and micropores. The catalyst includes a crystalline aluminosilicate and a metal. The catalyst is highly active at a low temperature. According to the method, C+ aromatic compounds substituted with at least one C+ alkyl group as by-products formed by xylene production can be selectively dealkylated and converted to BTX, etc. on a large scale within a short time. In addition, the method is an environmentally friendly process entailing reduced waste treatment cost when compared to conventional mesitylene production methods. Therefore, high value-added mesitylene can be separated from low value-added C+ aromatic compounds at lower cost compared to conventional methods. Furthermore, the supported metal catalyst is easy to recover after dealkylation and is recyclable, thereby contributing to reduced cost.