Kinetic and Modeling Studies of the Reaction S + H2S

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Article on kinetic and modeling studies of the reaction S + H2S.

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24 p.

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Gao, Yide; Zhou, Chenlai Ryan; Sendt, Karina; Goumri, Abdellatif; Haynes, Brian S. & Marshall, Paul 2011.

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Article on kinetic and modeling studies of the reaction S + H2S.

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24 p.

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Abstract: The reaction of S (3PJ) with H2S in Ar bath gas has been characterized by the laser photolysis–resonance fluorescence technique over 300–1040 K. The observed second-order rate constants are found to be pressure-dependent below 700 K. The reaction has been modeled accurately as a combination of direct abstraction on the triplet surface S (3Pj) + H2S → 2SH together with multi-well reactions on the singlet surface via intersystem crossing S (3Pj) + H2S → H2SS* → HSSH* + M → HSSH + M, S (3Pj) + H2S → H2SS* → HSSH* → 2SH. Since the intersystem crossing has a low energy barrier (3 kJ mol−1), the spin-forbidden channels dominate at low-temperature, with the overall rate and product distribution being dependent on pressure. Above 800 K, the abstraction channel on the triplet surface becomes important and is dominant above 1000 K.

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/S154074891000060X

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  • Proceedings of the Combustion Institute, 2011, Amsterdam: Elsevier Science Ltd., pp. 459-465

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  • Publication Title: Proceedings of the Combustion Institute
  • Volume: 33
  • Issue: 1
  • Page Start: 459
  • Page End: 465
  • Peer Reviewed: Yes

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  • 2011

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  • Oct. 2, 2015, 9:40 a.m.

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Gao, Yide; Zhou, Chenlai Ryan; Sendt, Karina; Goumri, Abdellatif; Haynes, Brian S. & Marshall, Paul. Kinetic and Modeling Studies of the Reaction S + H2S, article, 2011; [Amsterdam, Netherlands]. (digital.library.unt.edu/ark:/67531/metadc725809/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.