High pressure oxidation of C2H4/NO mixtures

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Article on high pressure oxidation of C2H4/NO mixtures.

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29 p.

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Lopez, Jorge Gimenez; Alzueta, María U.; Rasmussen, Christian Lund; Marshall, Paul & Glarborg, Peter 2011.

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Article on high pressure oxidation of C2H4/NO mixtures.

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29 p.

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Abstract: An experimental and kinetic modeling study of the interaction between C2H4 and NO has been performed under flow reactor conditions in the intermediate temperature range (600–900 K), high pressure (60 bar), and for stoichiometries ranging from reducing to oxidizing conditions. The main reaction pathways of the C2H4/O2/NOx conversion, the capacity of C2H4 to remove NO, and the influence of the presence of NOx on the C2H4 oxidation are analyzed. Compared to the C2H4/O2 system, the presence of NOx shifts the onset of reaction 75–150 K to lower temperatures. The mechanism of sensitization involves the reaction HOCH2CH2OO + NO → CH2OH + CH2O + NO2, which pushes a complex system of partial equilibria towards products. This is a confirmation of the findings of Doughty et al. [Proc. Combust. Inst. 26 (1996) 589-596] for a similar system at atmospheric pressure. Under reducing conditions and temperatures above 700 K, a significant fraction of the NOx is removed. This removal is partly explained by the reaction C2H3 + NO → HCN + CH2O. However, a second removal mechanism is active in the 700–850 K range, which is not captured by the chemical kinetic model. With the present thermochemistry and kinetics, neither formation of nitro-hydrocarbons (CH3NO2, C2H3NO2, C2H5NO2, CHOCH2NO2) nor nitroso-compounds (CH3NO, C2H3NO, C2H5NO, ONCH2CHO, CH3C(O)NO, ONCH2CH2OH) contribute to remove NOx.

This is the accepted manuscript version of the article. Reprinted with permission from Elsevier Science Ltd., all rights reserved. The final definitive version is available here: http://www.sciencedirect.com/science/article/pii/S1540748910002245

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  • Proceedings of the Combustion Institute, 2011, Amsterdam: Elsevier Science Ltd., pp. 449-457

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  • Publication Title: Proceedings of the Combustion Institute
  • Volume: 33
  • Issue: 1
  • Page Start: 449
  • Page End: 457
  • Peer Reviewed: Yes

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  • 2011

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  • Oct. 7, 2015, midnight

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Lopez, Jorge Gimenez; Alzueta, María U.; Rasmussen, Christian Lund; Marshall, Paul & Glarborg, Peter. High pressure oxidation of C2H4/NO mixtures, article, 2011; [Amsterdam, Netherlands]. (digital.library.unt.edu/ark:/67531/metadc725862/: accessed January 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.