Determination of adsorption and desorption parameters from ignition temperature measurements in catalytic combustion systems

T. Perger, T. Kovács, T. Turányi, C. Treviño

Research output: Contribution to conferencePaper

Abstract

Exposing a cold catalyst to a fuel-oxygen mixture, the surface gets covered with the more effectively adsorbing species. Increasing the temperature, this species is desorbed and the ignition temperature is determined by the rate of desorption. Based on the equations for the heat balance, expressions were derived for the calculation of ignition temperature from the parameters of the experimental setup, the preexponential factor and activation energy of desorption, the ratio of sticking coefficients, and the ratio of adsorption orders of fuel and oxygen. Published experimental data for the catalytic ignition of CO, H2, and CH4 were reinterpreted. Experimental ignition temperatures could be reproduced assuming second order adsorption of CO, H2, and O2 on Pt surface. Original is an abstract.

Original languageEnglish
Number of pages1
Publication statusPublished - Dec 1 2002
Event29th International Symposium on Combustion - Sapporo, Japan
Duration: Jul 21 2002Jul 26 2002

Other

Other29th International Symposium on Combustion
CountryJapan
CitySapporo
Period7/21/027/26/02

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Perger, T., Kovács, T., Turányi, T., & Treviño, C. (2002). Determination of adsorption and desorption parameters from ignition temperature measurements in catalytic combustion systems. Paper presented at 29th International Symposium on Combustion, Sapporo, Japan.