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Catalytic selectivity in complex systems
Author(s) -
Butt John B.
Publication year - 1964
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.5450420506
Subject(s) - selectivity , thermal diffusivity , catalysis , isothermal process , diffusion , thermodynamics , chemistry , chemical physics , chemical engineering , organic chemistry , physics , engineering
Diffusional effects on the three general types of catalytic selectivity are studied for complex, isothermal systems. A variable diffusivity evaluated from pore structure‐diffusion models is used to express the influence of mixed modes of diffusion, multicomponent mixtures, and catalytic pore structure on selectivity. Selectivity in complex systems is, in general, lower than that estimated from constant diffusivity analysis, although an optimum particle density may exist for certain cases of parallel reaction. The quantitative estimation of selectivity in complex systems requires some detail on the properties of the reaction and catalyst under study.