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Kinetics of liquid phase xylene isomerization over H‐mordenite
Author(s) -
Hopper J. R.,
Shigemura Dennis S.
Publication year - 1973
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690190520
Subject(s) - isomerization , chemistry , mordenite , catalysis , toluene , zeolite , xylene , benzene , diluent , selectivity , kinetics , reaction rate constant , m xylene , equilibrium constant , photochemistry , medicinal chemistry , organic chemistry , physics , quantum mechanics
A study of the kinetics for the liquid phase isomerization of ortho‐xylene over H ‐mordenite has been made at 505°K, 2.76 × 10 5 N/m 2 , and 23 mole % toluene diluent. This is the first known study reporting kinetic data for the liquid phase isomerization of xylene over a zeolite catalyst. High activity is indicated by the 80% achievement of para‐xylene equilibrium at 505°K, 2.76 × 10 5 N/m 2 , and 0.767 × 10 −3 kg/s/kg. Although high selectivity has previously been reported for a specifically prepared zeolite catalyst, the 99+% selectivity of the isomerization reaction with H ‐mordenite as indicated by no C 9 + aromatics and less than 0.5 mole % benzene in the product is most significant. Catalyst deactivation was also significant. Reaction rate constants are reported for a first‐order reversible triangular model among the xylene isomers with catalyst deactivation incorporated into the model.