Experimental study of bifurcation diagrams and maps of two parallel interacting catalytic reactions

R. R. Xiao*, M. Sheintuch, D. Luss

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Steady state multiplicity features of systems in which two reactions occur simultaneously may be affected by thermal and kinetic interactions and be qualitatively different from those of a single reaction. This is illustrated by an experimental study of the catalytic co-oxidation of hydrogen with either ammonia, butane or ethylene on a Pt wire. The bifurcation diagrams of wire temperature at a fixed hydrogen concentration vs. co-reactant concentration reveal multiplicity features which cannot be accounted for just by thermal interaction. The ignited branch was discontinuous at intermediate H2 concentrations and extinction occurred upon increasing the co-reactant concentration. The loci of the observed ignition and extinction points were used to construct a bifurcation map in the concentration plane. The maps show that kinetic inhibition exists between the two reactions in addition to thermal interaction.

Original languageEnglish
Pages (from-to)2085-2092
Number of pages8
JournalChemical Engineering Science
Volume41
Issue number8
DOIs
StatePublished - 1986
Externally publishedYes

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