✦ LIBER ✦

Cyclic operation of reaction systems: the influence of diffusion on catalyst selectivity

✍ Scribed by J.E. Bailey; F.J.M. Horn

Publisher: Elsevier Science
Year: 1972
Tongue: English
Weight: 833 KB
Volume: 27
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(72)80144-1

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✦ Synopsis

Periodic operation of a catalyst pellet can produce greater selectivity than steady-state operation even when diffusional mass transfer resistance is very large. For the example discussed here improved selectivity is obtained at a switching frequency which is small enough to provide adequate penetration of the catalyst but which simultaneously is sufficiently large to maintain adsorption disequilibrium in the penetration region. The asymptotic dependence of average production rates on a Thiele modulus 7 is deduced for large r).

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