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Olefin conversion over zeolite H‐ZSM‐5
Author(s) -
Norval G. W.,
Phillips M. J.,
Virk K. S.,
Simons R. V.
Publication year - 1989
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450670327
Subject(s) - propene , zeolite , olefin fiber , yield (engineering) , selectivity , chemistry , butene , catalysis , zsm 5 , atmospheric temperature range , ethylene , photochemistry , organic chemistry , materials science , physics , meteorology , metallurgy
The conversion of propene, 1‐butene and 2‐methylpropene over zeolite H‐ZSM‐5 has been studied in the temperature range 663–773 K. While propene and 1‐butene yield similar products, that from 2‐methylpropene contains less aromatics, but a greater fraction of xylenes. The time on stream behaviour of the aromatics from this latter olefin demonstrates that the difference in product yield and selectivity is due to pore mouth blockage resulting from the formation of iso‐butyl cations on the external zeolite surface.