Effects of zeolite pore structure on skeletal isomerization of 1-buten
es are investigated. Three 10-member ring zeolites, ferrierite, ZSM-23
, and ZSM-5, are studied and compared. Results show that ferrierite, w
ith intersecting 10-MR and 8-MR channels, has better isomerization act
ivity than ZSM-23, with monodirectional 10-MR channels, ZSM-5 with two
intersecting 10-MR channels is not a selective isomerization catalyst
. (C) 1995 Academic Press, Inc.