Analytical explosion limits of H2/CO/O2 and H2/CH4/O2 mixtures

Wenkai Liang, Chung K. Law

Research output: Contribution to conferencePaperpeer-review


The pressure-temperature explosion limits of H2/CO/O2 and H2/CH4/O2 mixtures were analyzed computationally and theoretically. It is shown that, with the addition of even a minute quantity of H2, the H2/CO/O2 mixture explosion limits evolve from being monotonic to the non-monotonic Z-shaped response characteristic of H2/O2 mixtures. Eigenvalue analysis of the reaction mechanism leads to an analytic solution for the explosion limits, yielding explicit expressions for them. The separate and coupled roles of H2 and CO oxidation are identified, leading to enhanced insight of this foundational component in the mechanisms of hydrocarbon oxidation. A similar analysis was also conducted for H2/CH4/O2. yielding useful information for the utilization of syngas.

Original languageEnglish (US)
StatePublished - 2017
Event10th U.S. National Combustion Meeting - College Park, United States
Duration: Apr 23 2017Apr 26 2017


Other10th U.S. National Combustion Meeting
Country/TerritoryUnited States
CityCollege Park

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • Physical and Theoretical Chemistry
  • Mechanical Engineering


  • Eigenvalue analysis
  • Explosion limits
  • Methane
  • Syngas


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