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

• Tipo: Artigo em Revista Científica Internacional
• Data: 1993

Autores

LU, ZP (Autor) Outra; DIAS, MM (Autor) FEUP; LOPES, JCB (Autor) FEUP; CARTA, G (Autor) Outra; RODRIGUES, AE (Autor) FEUP

Revista

Título: Industrial & Engineering Chemistry Research

Vol. 32 Nº 9

Páginas: 1839-1852

ISSN: 0888-5885

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 22 Citações

ISI Web of Science

Scopus - 23 Citações

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 14