Temperature dependence of the rate constant and branching ratio for the OH+ClO reaction

Title:
Temperature dependence of the rate constant and branching ratio for the OH+ClO reaction
Authors:
Lipson, Jennifer B.; Elrod, Matthew J.; Beiderhase, Thomas W.; Molina, Luisa T.; Molina, Mario J.
Abstract:
The overall rate constant and branching ratio for the OH + ClO reaction have been measured using the turbulent flow technique with high-pressure chemical ionization mass spectrometry for the detection of reactants and products. At 298 K and ca. 100 Torr pressure, the overall rate constant was determined to be (1.46 ± 0.23) × 10−11 cm3 molecule−1 s−1. The temperature dependence of the rate constant was investigated between 205 and 298 K, yielding the following Arrhenius expression: (5.5 ± 1.6)×10−12 exp[(292 ± 72)/T] cm3 molecule−1 s−1. For the branching ratio studies OD was used instead of OH, making it possible to observe directly the production of DCl from the minor channel of the OD + ClO reaction. The temperature dependence of the rate constant for this minor channel was investigated between 210 and 298 K, yielding the following Arrhenius expression: (1.7 ± 0.3) × 10−13 exp[(363 ± 50)/T] cm3 molecule−1 s−1. The branching ratio for the DCl channel was found to range from 0.05 ± 0.02 at 298 K to 0.06 ± 0.02 at 210 K.
Citation:
Lipson, J.B., M.J. Elrod, T.W. Beiderhase, L.T. Molina, and M.J. Molina. 1997. "Temperature Dependence of the Rate Constant and Branching Ratio for the OH+ClO Reaction." Journal of the Chemical Society, Faraday Transactions 93: 2665-2673.
Publisher:
Royal Society of Chemistry
DATE ISSUED:
1997
Department:
Chemistry
Type:
article
PUBLISHED VERSION:
10.1039/A701946G
PERMANENT LINK:
http://hdl.handle.net/11282/309822

Full metadata record

DC FieldValue Language
dc.contributor.authorLipson, Jennifer B.en_US
dc.contributor.authorElrod, Matthew J.en_US
dc.contributor.authorBeiderhase, Thomas W.en_US
dc.contributor.authorMolina, Luisa T.en_US
dc.contributor.authorMolina, Mario J.en_US
dc.date.accessioned2013-12-23T16:18:39Zen
dc.date.available2013-12-23T16:18:39Zen
dc.date.issued1997en
dc.identifier.citationLipson, J.B., M.J. Elrod, T.W. Beiderhase, L.T. Molina, and M.J. Molina. 1997. "Temperature Dependence of the Rate Constant and Branching Ratio for the OH+ClO Reaction." Journal of the Chemical Society, Faraday Transactions 93: 2665-2673.en_US
dc.identifier.issn0956-5000en_US
dc.identifier.urihttp://hdl.handle.net/11282/309822en
dc.description.abstractThe overall rate constant and branching ratio for the OH + ClO reaction have been measured using the turbulent flow technique with high-pressure chemical ionization mass spectrometry for the detection of reactants and products. At 298 K and ca. 100 Torr pressure, the overall rate constant was determined to be (1.46 ± 0.23) × 10−11 cm3 molecule−1 s−1. The temperature dependence of the rate constant was investigated between 205 and 298 K, yielding the following Arrhenius expression: (5.5 ± 1.6)×10−12 exp[(292 ± 72)/T] cm3 molecule−1 s−1. For the branching ratio studies OD was used instead of OH, making it possible to observe directly the production of DCl from the minor channel of the OD + ClO reaction. The temperature dependence of the rate constant for this minor channel was investigated between 210 and 298 K, yielding the following Arrhenius expression: (1.7 ± 0.3) × 10−13 exp[(363 ± 50)/T] cm3 molecule−1 s−1. The branching ratio for the DCl channel was found to range from 0.05 ± 0.02 at 298 K to 0.06 ± 0.02 at 210 K.en_US
dc.language.isoen_USen_US
dc.publisherRoyal Society of Chemistryen_US
dc.identifier.doi10.1039/A701946Gen
dc.subject.departmentChemistryen_US
dc.titleTemperature dependence of the rate constant and branching ratio for the OH+ClO reactionen_US
dc.typearticleen_US
dc.identifier.journalFaraday Transactionsen_US
All Items in The Five Colleges of Ohio Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.