DIFFUSION, CONVECTION, AND REACTION IN CATALYST PARTICLES - ANALOGY BETWEEN SLAB AND SPHERE GEOMETRIES

• Type: Article in International Scientific Journal
• Date: 1993

Authors

LU, ZP (Author) Other; DIAS, MM (Author) FEUP; LOPES, JCB (Author) FEUP; CARTA, G (Author) Other; RODRIGUES, AE (Author) FEUP

Journal

Title: Industrial & Engineering Chemistry Research

Vol. 32 No. 9

Pages: 1839-1852

ISSN: 0888-5885

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 22 Citations

ISI Web of Science

Scopus - 23 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

Authenticus ID: P-001-MQ4

DOI: 10.1021/ie00021a007

Abstract (EN): Expressions for the calculation of the ''augmented' intraparticle effective diffusivity have been obtained for diffusion, convection, and reaction problems in catalyst particles with slab and sphere geometry at steady state and in the transient regime. Analytical solutions for the time domain model equations for both geometries have been derived, and a numerical scheme for solving the spherical particle model equations is also presented. An equivalence ratio, l/R, between the slab and the sphere characteristic dimensions has been obtained from these results for steady-state and transient operation. Finally, a comparison of the actual use of the sphere and the slab model equations is presented.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14