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Simulataneous heat and mass transfer with and without reactant exhaustion in catalyst particles for reaction with volume change
Author(s) -
Lih Marshall M.,
Lin Kan
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.690190423
Subject(s) - exothermic reaction , dimensionless quantity , thermodynamics , volume (thermodynamics) , chemistry , thiele modulus , isothermal process , mass transfer , catalysis , constant (computer programming) , order of reaction , activation energy , reaction rate constant , mechanics , organic chemistry , kinetics , physics , classical mechanics , computer science , programming language
Asymptotic analytic expressions for the concentration and temperature profiles as well as effectiveness factor inside porous, thin‐disk shaped catalyst particles have been developed for zeroth‐order exothermic reaction with reactant‐to‐product volume change. The individual and combinative effects of volume‐change, Thiele and thermal Thiele moduli, and of the dimensionless activation energy are discussed. As expected, the expressions revert to those for the corresponding isothermal and constant‐volume cases. Errors arising from the approximation were calculated and found to be quite acceptable.