Asymmetric temperature and composition profiles in catalyst particles

In the many published discussions of chemical reactions accompanied by heat conduction and diffusion in catalyst particles, it has been tacitly assumed that the temperature and concentration profiles have the symmetry of the particle. It is the main purpose of this work to show that this is not necessarily the case, and hence, that the extensive literature on multiple solutions has uncovered only a fraction of all possible steady states. A slab has been used as a model for the catalyst particle? diffusive resistances to heat and mass flux in its interior and Newtonian resistances to heat and mass transfer at its faces has been considered. For a single first order exothermic reaction with Arrhenius temperature dependence and constant thermal and mass diffusivities, asymmetric profiles for temperature and composition have been obtained, thus verifying the above contention.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Engineering

Grantor

Rice University

Year dc:date.issued

1969

Author dc:creator

• Martel, Ezio Antonio

Advisor dc:contributor.advisor

• Jackson, Roy

Statement dc:rights

• Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.

Language dc:language.iso

eng

Handle dc:identifier.uri

https://hdl.handle.net/1911/89713

OAI identifier oai:identifier

oai:repository.rice.edu:1911/89713