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Kinetics and selectivity of reactions of 1‐alkenes on HY zeolite: The influence of chain length
Author(s) -
Abbot J.,
Wojciechowski B. W.
Publication year - 1988
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.5450660516
Subject(s) - isomerization , cracking , chemistry , alkene , selectivity , product distribution , zeolite , kinetics , coke , catalysis , fluid catalytic cracking , reaction rate constant , photochemistry , carbenium ion , organic chemistry , physics , quantum mechanics
Catalytic reactions of 1‐alkenes on HY have been studied at 400°C. Skeletal isomerization to the corresponding rnonornethylalkene is the dominant initial process. Cracking and coke formation are also observed as initial processes. Initial cracking selectivity can be accounted for by monomolecular β‐scission processes involving a carbenium ion intermediate. However, the initial cracking product distribution for l‐hexene must be explained by assuming some contribution from a dimerization‐cracking mechanism. The kinetics of these processes have been fitted by a model previously used to describe the reactions of n‐alkanes. It is found that the rate constants for both skeletal isomerization and cracking increase with chain length of the feed alkene.