Studies of pentane oxidation and pyrolysis in nanosecond-pulsed plasma discharges using in-situ laser diagnostics

Aric Rousso, Xingqian Mao, Qi Chen, Yiguang Ju

Research output: Contribution to conferencePaperpeer-review

Abstract

This study explores plasma assisted pentane oxidation and pyrolysis in a nanosecond pulsed discharge using laser absorption spectroscopy and gas chromatography. An updated pentane model is developed with C0-C2 substitution by HP-Mech, a plasma chemistry sub-mechanism, and new electron impact dissociation reactions added. Using temperature as a model input, the electron impact cross sections of pentane are adjusted so the model accurately predicts the pyrolysis steady state and time-dependent species profiles, and then tested on the oxidation case. Results show favorable prediction of pentane consumption and H2O and CH2O formation. CH4 is slightly under-predicted by the new model, while C2H2 is overpredicted, likely due to under-consumption, perhaps by radicals such as OH. The addition of electron impact dissociation reactions slows the overall oxidative pathway by a reduction in OH concentration and prevents over-prediction by adjusting the branching ratio towards smaller hydrocarbons instead of oxidative species.

Original languageEnglish (US)
StatePublished - 2018
Event2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018 - State College, United States
Duration: Mar 4 2018Mar 7 2018

Other

Other2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018
CountryUnited States
CityState College
Period3/4/183/7/18

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Chemical Engineering(all)

Keywords

  • Laser diagnostics
  • Low temperature oxidation
  • Non-equilibrium plasma
  • Plasma assisted combustion

Fingerprint Dive into the research topics of 'Studies of pentane oxidation and pyrolysis in nanosecond-pulsed plasma discharges using in-situ laser diagnostics'. Together they form a unique fingerprint.

Cite this