Flow field and non-isothermal effects on diffusion, convection, and reaction in permeable catalysts

• Type: Article in International Scientific Journal
• Date: 1995

Authors

José C. B. Lopes (Author) FEUP; Madalena M. Dias (Author) FEUP; Vera G. Mata (Author) Other; Alírio E. Rodrigues (Author) FEUP

Journal

Title: Industrial & Engineering Chemistry Research

Vol. 34 No. 1

Pages: 148-157

ISSN: 0888-5885

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 11 Citations

Scopus - 14 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

Authenticus ID: P-001-HRD

DOI: 10.1021/ie00040a013

Abstract (EN): This paper analyzes non-isothermal effects on the efficiency of large-pore catalyst particles, where intraparticle convection may be important. The particle permeability is taken into account by studying the flow field within the particle simultaneously with the mass and the energy transport processes. Two particle geometries, slab and sphere, are considered. Non-isothermal effects are observed on the occurrence of multiple steady states due to reaction ignition. It is found that, when the flow field equations are taken into account, the maximum values of the efficiency and the maximum temperatures reached inside the particle are lower than the ones estimated considering just the mass and energy transport equations.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10