Spatiotemporal Evolution of Conversion and Selectivity for Simultaneous Noncatalytic Gas−Solid Reactions in a Compact of Particles

A simple model for simultaneous isothermal noncatalytic gas−solid reactions, occurring in spherical particles either shrinking or growing with reaction, is developed. The particles are assumed to be packed following the hexagonal close-packed model and allowed to overlap. The model predicts how the...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 1997-05, Vol.36 (5), p.1470-1479
Main Authors: Maalmi, Mostafa, Strieder, William C, Varma, Arvind
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Theory of reactions, general kinetics
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:A simple model for simultaneous isothermal noncatalytic gas−solid reactions, occurring in spherical particles either shrinking or growing with reaction, is developed. The particles are assumed to be packed following the hexagonal close-packed model and allowed to overlap. The model predicts how the surface area and porosity of the compact vary with reaction and describes the spatiotemporal evolution of solid reactant conversion as well as product selectivity. The influence of physicochemical variables on product uniformity is studied.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie960467b