✦ LIBER ✦

Viscous flow effects in the periodic pressure cycling of gas-phase catalytic reactions

✍ Scribed by Donald E. Cormack; Graig I. Beattie

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 429 KB
Volume: 34
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(79)85012-5

No coin nor oath required. For personal study only.

✦ Synopsis

AM-The prevtous study of Hamer and Cormack[l]. on the Increased effectrveness of gas phase catalybc reactions under condmons of oscillating external pressure, IS extended to include VISCOUS flow effects For this purpose, the full, time dependent equations of VISCOUS flow, drffuslon and chemical reachon for a first order, Isothermal reaction In a porous catalyst are solved numerIcally The mcluslon of VISCOUS effects results m a new dimensionless parameter, N It IS shown that In general the catalyst effectiveness factor IS smaller for smaller N It IS concluded, however, that even though VISCOUS effects might be very Important for extremely low permeabrbty catalysts, VISCOUS effects can be neglected for operatmg condmons such that N > 1 For one example cited ttus corresponds to a permeability of 0 2 mdhdarcy 1 lNTRoDucTloN In a recent pubhcatlon. Hamer and Cormack[l]

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