Solid State Physics

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By J. F. Le Page

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Extra info for Applied Heterogeneous Catalysis: Design, Manufacture, and Use of Solid Catalysts

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6 6 0. 3 1. 3 57 . = u o . 357 . 357 1 6 • [ p o. l p l. 6 • ep ,d P 3 B 1 • B 2 u 0 · 6 4 Ch J q; o . l J ] q;o . 3 ch : a constant characteristic of the gas , : a characteristic of the catalyst morphology , = superficial linear velocity depending on the reactor geometry. From which on first approximation: 2 41 KINETICS OF CHEM ICAL REACTIONS IN H ETEROGENEOUS CATALYSIS where B1 = constant characteristic of the reacting gas, e = fraction of voids in the catalytic bed, u = superf1cial linear flow rate of the gas through the catalytic bed.

La catalyse de contact ". La Recherche, No. 1 6, Oct. 1 97 1 , Vol. 2, p. 835. [5] Advances in Catalysis, Academic Press, 23 volumes, 1941- 1973. [6] BOND, G. , Catalysis by Metals. Academic Press, 1 962. , kinetics of chemical and physical phenomena occurring in the catalyst granule. Specialized books and articles on chemical and physical kinetics (Refs [ 1 ] through [5] ) are so many and detailed that only the most important kinetic equations and the theories, hypotheses and simplifications on which they are based are reviewed here.

In order to be accurate, however, we must add that this test is valid only as long as it is assured beforehand that the external diffusional limitations which also depend on dP are negligible. CONCLUSION One is accustomed to associating kinetics of reactions either with optimization of operating conditions, as for chemical engineers, or with concern for the reaction mechanism, as for scientists, chemists and physical chemists.

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