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Zeitschrift für Physikalische Chemie

International journal of research in physical chemistry and chemical physics

Editor-in-Chief: Rademann, Klaus


IMPACT FACTOR 2018: 0.975
5-year IMPACT FACTOR: 1.021

CiteScore 2018: 1.20

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Source Normalized Impact per Paper (SNIP) 2018: 0.391

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2196-7156
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Volume 229, Issue 10-12

Issues

The Reaction Kinetics of Amino Radicals with Sulfur Dioxide

Yide Gao
  • Department of Chemistry and Center for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, 1155 Union Circle #305070, Denton, Texas 76203–5017, United States
  • Present address: PPG Industries, 3333 N Interstate 35, Gainesville, Texas 76240, United States
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/ Peter Glarborg
  • Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
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/ Paul Marshall
  • Corresponding author
  • Department of Chemistry and Center for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, 1155 Union Circle #305070, Denton, Texas 76203–5017, United States
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Published Online: 2015-07-10 | DOI: https://doi.org/10.1515/zpch-2015-0637

Abstract

Application of the laser photolysis–laser-induced fluorescence method to the reaction NH2 + SO2 in argon bath gas yields pressure-dependent, third-order kinetics which may be summarized as k = (1.49 ± 0.15) × 10−31 (T/298 K)−0.83 cm6 molecule2 s1 over 292–555 K, where the uncertainty is the 95% confidence interval and includes possible systematic errors. The quenching of vibrationally excited NH2 is consistent with a high-pressure limit for NH2 + SO2 of (1.62 ± 0.25) × 10−11 cm3 molecule1 s1 over the temperature range 295–505 K, where again the 95% confidence interval is shown. Ab initio analysis yields a H2N–SO2 dissociation enthalpy of 73.5 kJ mol1, and comparison with RRKM theory and the exponential down model for energy transfer yields 〈ΔEdown = 350 cm1 for Ar at room temperature.

This article offers supplementary material which is provided at the end of the article.

Keywords: Reaction Kinetics; NH2; SO2; Combustion; RRKM

Supplementary material

the online version of this article (DOI: 10.1515/zpch-2015-0637) provides supplementary material for authorized users.

About the article

Accepted: 2015-06-18

Received: 2015-04-29

Published Online: 2015-07-10

Published in Print: 2015-10-28


Citation Information: Zeitschrift für Physikalische Chemie, Volume 229, Issue 10-12, Pages 1649–1661, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, DOI: https://doi.org/10.1515/zpch-2015-0637.

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