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Interactions of inter‐ and intraphase gradients in a diffusion limited catalytic reaction
Author(s) -
Kehoe J. P. G.,
Butt J. B.
Publication year - 1972
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.690180217
Subject(s) - mass transfer , chemistry , catalysis , diffusion , convection , reaction rate , pellet , thermodynamics , benzene , heat transfer , mechanics , chromatography , materials science , organic chemistry , physics , composite material
The experimental measuremet of inter‐ and intraphase temperature gradients in a single pellet reactor for the Ni‐kieselguhr catalyzed benzene hydrogenation reaction is described. Experimental variables were temperature, feed composition, flow rate (hence heat and mass transfer coefficients) and intrinsic catalytic activity. All parameters required for carrying out calculations were either measured in separate experiments or compared with available independent information. The rather complex interactions between inter‐ and intraphase gradients are well represented by the theory except at conditions of high reaction rate and low convective transport rate. The discrepancies observed at these conditions are apparently due to the development of nonuniform external boundary layers.