Hydrogen assisted catalytic combustion of methane on platinum

O. Deutschmann*, L. I. Maier, U. Riedel, A. H. Stroemman, Robert Dibble

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

296 Scopus citations

Abstract

The objective of this paper is to study hydrogen assisted catalytic combustion of methane on platinum experimentally and numerically. In the experiment, we measure the exit temperatures of methane/hydrogen/air mixtures flowing at atmospheric pressure through platinum coated honeycomb channels. A single channel of this monolith is investigated numerically by a two-dimensional Navier-Stokes simulation including an elementary-step surface reaction mechanism. Furthermore, a one-dimensional time-dependent simulation of a stagnation flow configuration is performed to elucidate the elementary processes occurring during catalytic ignition in the mixtures studied. The dependence of the hydrogen assisted light-off of methane on hydrogen and on methane concentrations is discussed. The light-off is primarily determined by the catalyst temperature that is a result of the heat release due to catalytic hydrogen oxidation. Increasing hydrogen addition ensures light-off, decreasing hydrogen addition requires an increasing methane feed for light-off.

Original languageEnglish (US)
Pages (from-to)141-150
Number of pages10
JournalCatalysis Today
Volume59
Issue number1-2
DOIs
StatePublished - Jun 10 2000

Keywords

  • Catalytic combustion
  • Catalytic ignition
  • Numerical simulation
  • Reaction kinetics

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Fingerprint Dive into the research topics of 'Hydrogen assisted catalytic combustion of methane on platinum'. Together they form a unique fingerprint.

Cite this