Author :
Dabbagh, Hossein A.,Davis, Burtron H
Title of Article :
question of aromatic ring expansion-contraction for conversions with a ZSM-5 catalyst
Title Of Periodical :
JOURNAL OF CATALYSIS
Descriptors :
ZSM-5,Carbon-14 studies,Ring expansion,Isomerization
Abstract :
Toluene,labeled with 14C in either the methyl position or uniformly in the aromatic ring, did not undergo a measurable amount of either ring expansion-contraction or ring degradation to produce ethene at temperatures up to 350 C. Ethylbenzene dealkylation and disprortionation and xylene isomerization occur to produce equilibrium mixtures of diethylbenzenes or xyenes under these reaction conditions,hence,ring expansion-contraction must be much slower than theses isomerization reactions.
