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:
Apr. 28, 1998
Filed:
Feb. 06, 1996
Applicant:
Inventors:
Shouxi Gui, Beijing, CN;
Yuzhi Hao, Beijing, CN;
Yanqing Li, Beijing, CN;
Zhenhua Jing, Beijing, CN;
Haohui Gu, Beijing, CN;
Zhanqiao Liang, Beijing, CN;
Baoyu Cheng, Beijing, CN;
Assignees:
China Petrochemical Corporation, Beijing, CN;
Research Institute of Petroleum Processing, Beijing, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
585489 ; 502 64 ; 502 65 ; 502 66 ; 502 71 ; 502 70 ; 502 77 ; 502 81 ; 502 84 ; 502325 ; 502339 ; 502332 ; 502349 ; 502351 ; 585488 ; 585486 ;
Abstract
A catalyst for the preparation of benzene, toluene and xylene from C.sub.9.sup.+ heavy aromatics consists of zeolite ZSM-5 and .gamma.- or .eta.-Al.sub.2 O.sub.3 as carrier, Re, Sn and Pt or Pd supported on the carrier. Under the conditions of 350.degree.-450.degree. C., 0.5-3.5 MPa, a WHSV of 1-5 h.sup.-1 and a H.sub.2 /HC ratio (v/v) of 500-1200, the catalyst achieves high activity and stability as well as low hydrogen consumption.