Premium
A model fouling reaction in a zeolite catalyst
Author(s) -
Tan C. H.,
Fuller O. M.
Publication year - 1970
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.5450480214
Subject(s) - zeolite , fouling , benzene , catalysis , alkylation , cyclohexene , chemical engineering , alkyl , chemistry , crystal (programming language) , materials science , organic chemistry , membrane , biochemistry , computer science , engineering , programming language
A zeolite catalyst became rapidly fouled when used for the alkylation of benzene by cyclohexene at temperatures below 245°C. At higher temperatures, the extent of fouling was limited and at 450° C, a steady rate of formation of cyclohexyl benzene was observed. The fouling material was identified as a mixture of di‐ and tri‐alkyl benzene, trapped because of size in the void spaces of the zeolite crystal. A mathematical model based on the forms of Langmuir‐Hinshelwood kinetics was used to describe the fouling phenomenon. The effect of the internal mass transport has also been investigated by means of a mathematical model. This model indicates that transport between the surface of the zeolite crystal and interior reaction sites is rapidly blocked by a layer of fouling material.