EP 0000812 B1 19810902 - A PROCESS FOR ISOMERIZING XYLENES
Title (en)
A PROCESS FOR ISOMERIZING XYLENES
Publication
Application
Priority
US 81817177 A 19770722
Abstract (en)
[origin: EP0000812A1] Isomerization of xylenes in admixture with ethyl benzene by contact with a zeolite catalyst such as ZSM-5 is improved by use of zeolite having a silica/alumina ratio of at least 500 at a temperature above about 427 DEG C. At these conditions, conversion of ethyl benzene follows a different reaction path which permits high conversion of ethyl benzene to benzene without loss of xylenes by disproportionation.
IPC 1-7
IPC 8 full level
B01J 29/00 (2006.01); B01J 29/44 (2006.01); B01J 29/46 (2006.01); C07B 61/00 (2006.01); C07C 1/00 (2006.01); C07C 5/27 (2006.01); C07C 15/08 (2006.01); C07C 67/00 (2006.01)
CPC (source: EP US)
B01J 29/44 (2013.01 - EP US); B01J 29/46 (2013.01 - EP US); C07C 5/2737 (2013.01 - EP US); B01J 2229/26 (2013.01 - EP US); B01J 2229/42 (2013.01 - EP US); Y02P 20/52 (2015.11 - EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0000812 A1 19790221; EP 0000812 B1 19810902; CA 1096890 A 19810303; DE 2861001 D1 19811126; ES 471957 A1 19790201; IN 149484 B 19811226; IT 1099583 B 19850918; IT 7826000 A0 19780721; JP S5424834 A 19790224; JP S6024772 B2 19850614; US 4163028 A 19790731; ZA 784167 B 19800227
DOCDB simple family (application)
EP 78300170 A 19780720; CA 307504 A 19780717; DE 2861001 T 19780720; ES 471957 A 19780721; IN 783CA1978 A 19780715; IT 2600078 A 19780721; JP 8782878 A 19780720; US 91268178 A 19780605; ZA 784167 A 19780721