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SHAPE SELECTIVE CATALYSIS BY ZSM-35 ZEOLITES - DISPROPORTIONATION OF ETHYLBENZENE AND ISOMERIZATION OF META-XYLENE

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Title SHAPE SELECTIVE CATALYSIS BY ZSM-35 ZEOLITES - DISPROPORTIONATION OF ETHYLBENZENE AND ISOMERIZATION OF META-XYLENE
 
Creator RANE, SJ
SATYANARAYANA, CVV
CHAKRABARTY, DK
 
Subject ferrierite
zeolites
xylene isomerization
ethylbenzene disproportionation
selectivity (shape-)
deactivation
coke formation
pore structure
 
Description Zeolite ZSM-35 with a ferrierite structure and having a silica:alumina ratio of 22.5 has been synthesized hydrothermally using pyrrolidine as the template. The acid form, HZSM-35, showed exceptionally high para selectivity in ethylbenzene disproportionation, but deactivated rapidly due to coking. A mixture of HZSM-35 with 10% HZSM-5 showed much better stability while retaining high para selectivity. Isomerization of m-xylene yielded p-xylene with high selectivity. The unique pore structure of ZSM-35 is responsible not only for its high para selectivity, but also for rapid coking, leading to deactivation.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-26T16:31:49Z
2011-12-26T12:55:11Z
2011-12-27T05:43:51Z
2011-07-26T16:31:49Z
2011-12-26T12:55:11Z
2011-12-27T05:43:51Z
1991
 
Type Article
 
Identifier APPLIED CATALYSIS, 69(2), 177-186
0166-9834
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6962
http://hdl.handle.net/10054/6962
 
Language en