Kinetics of butane oxidation to maleic anhydride: VPO catalyst behavior under oxidizing, reducing and cored conditions

J. Gascón, R. Valenciano, C. Téllez, J. Herguido, M. Menéndez

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

A new kinetic model, which forecasts the transient behavior of the catalyst under oxidizing, reducing, and cofed (butane-O 2) conditions, is presented. Transient experiments feeding an inert with butane or oxygen, and semi-transient experiments, cofeeding butane and oxygen with low oxygen partial pressures, are performed. The model proposed assumes the presence of oxygen in the surface and in the lattice of the catalyst, but only the oxygen in the surface takes place in the oxidation reactions, being replenished by diffusion from the lattice. When the catalyst is reoxidized, oxygen diffuses from the surface to the lattice. In the cases where oxygen and butane are cofed, the surface coverage by oxygen varies with time due to the simultaneous effect of reaction with butane and maleic anhydride, oxygen adsorption from the gas phase and oxygen diffusion to/or the lattice. A satisfactory prediction of the transient behavior of the catalyst is achieved under the variety of experimental conditions employed in the kinetic study. This is an abstract of a paper presented at the 7th World Congress of Chemical Engineering (Glasgow, Scotland 7/10-14/2005).

Original languageEnglish (US)
Title of host publication7th World Congress of Chemical Engineering, GLASGOW2005, incorporating the 5th European Congress of Chemical Engineering - Congress Manuscripts
Number of pages1
StatePublished - 2005
Externally publishedYes
Event7th World Congress of Chemical Engineering, GLASGOW2005, incorporating the 5th European Congress of Chemical Engineering - Glasgow, Scotland, United Kingdom
Duration: Jul 10 2005Jul 14 2005

Conference

Conference7th World Congress of Chemical Engineering, GLASGOW2005, incorporating the 5th European Congress of Chemical Engineering
CountryUnited Kingdom
CityGlasgow, Scotland
Period07/10/0507/14/05

ASJC Scopus subject areas

  • Energy(all)

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