Ammonia and ammonia/hydrogen blends oxidation in a jet-stirred reactor: Experimental and numerical study

Ksenia N. Osipova, Xiaoyuan Zhang, Mani Sarathy, Oleg P. Korobeinichev, Andrey G. Shmakov

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


One of the most important problems of modern energy industry is the transition to carbon free fuels, which can mitigate the negative environmental effects. This paper presents experimental data on ammonia and ammonia/hydrogen blends oxidation in an isothermal jet-stirred reactor over the temperature of range 800–1300 K. Experiments were performed under atmospheric pressure, residence time of 1 s, various equivalence ratios, and with argon dilution at ≈0.99. It was revealed that hydrogen addition shifts the onset temperature of ammonia oxidation by about 250 K towards the lower region. A detailed chemical kinetic model which showed the best predictive capability was used to understand the effect of hydrogen addition on ammonia reactivity. It was shown that hydrogen presence results into higher concentrations of H, O and OH radicals. Moreover, these radicals start to form at lower temperatures when hydrogen is present. However, the change of the equivalence ratio has only slight effect on the temperature range of ammonia conversion.
Original languageEnglish (US)
Pages (from-to)122202
StatePublished - Oct 18 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-10-20
Acknowledged KAUST grant number(s): OSR-CRG2019-4051
Acknowledgements: The reported study was supported by Russian Foundation for Basic Research [grant number 20-33-90163]; this work was supported by the KAUST Office of Sponsored Research [OSR-CRG2019-4051].

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Organic Chemistry
  • Chemical Engineering(all)
  • Fuel Technology


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