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Catalytic reactions of n ‐hexane on HY zeolite
Author(s) -
Abbot J.,
Wojclechowski 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.5450660517
Subject(s) - hexane , zeolite , isomerization , olefin fiber , chemistry , catalysis , cracking , selectivity , methane , adsorption , hydrogen , alkane , organic chemistry
Catalytic reactions of n‐hexane on HY zeolite have been studied at 500°C. An examination of initial product selectivities shows that monomolecular processes are dominant. These include cracking to produce either C 3 + C 3 or C 2 + C 4 and skeletal isomerization. Bimolecular cracking processes account for only ∼ 5% of the total initial selectivity. Methane was identified as an initial reaction product, but its formation is due to concurrent thermal processes. Molecular hydrogen was observed only as a secondary product. The conversion of n‐hexane was fitted by a kinetic model previously applied to various n‐alkanes in the range C 8 ‐ C 16 . In all these cases, the model shows that adsorption of reactants is strongly inhibited by product olefins. Addition of small amounts of olefin to the n‐hexane feed had no accelerating effect, which does not confirm results of previous studies.