The thermal decomposition of ethane

Séan J. Cassady*, Rishav Choudhary, Nicolas H. Pinkowski, Jiankun Shao, David F. Davidson, Ronald K. Hanson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

Ethane pyrolysis chemistry plays a critical role in the combustion behavior of natural gas and gives insight into the decomposition patterns of larger alkanes. In this work, ethane pyrolysis was studied behind reflected shock waves with a convex optimization-based laser absorption speciation technique. Species time-histories of ethane, ethylene, methane, and acetylene were quantified in the decomposition of 1% and 2% ethane in argon at conditions between 1178 and 1527 K and 3.1–4.2 atm. Six laser wavelengths, simultaneously probing sensitive regions of each species’ spectra, enabled the sensitive detection of all major pyrolysis products and confirmed the negligible formation of other species. The time-history data presented in this work paint a coherent picture of ethane decomposition that motivates specific refinements to state-of-the-art detailed kinetic models.

Original languageEnglish
Article number117409
JournalFuel
Volume268
DOIs
Publication statusPublished - 15 May 2020
Externally publishedYes

Keywords

  • Chemical kinetics
  • Convex optimization
  • Ethane
  • Laser absorption spectroscopy
  • Natural gas
  • Shock tube

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