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Low temperatures and pressure dependence study of OH and CO reaction

Liu, Yingdi and Sander, Stanley P. (2012) Low temperatures and pressure dependence study of OH and CO reaction. In: 244th ACS National Meeting & Exposition, August 19-23, 2012, Philadelphia, PA.

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OH radical and CO reaction is of crucial importance in the atmospheres of Mars and Earth. In this work, the reaction is studied under pseudo first-order conditions, monitoring the decay of OH by laser-induced fluorescence in the presence of a large excess of CO. We measured rate coeffs. for the reaction of OH with CO using laser photolysis/laser-induced fluorescence in 180K - 295K temp. under 100 to 200 torr. The pressure dependence study is ranging from 50 to 800 torr with Ar, He or N2 as bath gas. The biexponential decay of OH signal is obsd. and it is analyzed to derive information about the equil. const. for reaction: OH + CO ↔HOCO.

Item Type:Conference or Workshop Item (Paper)
Sander, Stanley P.0000-0003-1424-3620
Record Number:CaltechAUTHORS:20120822-074655130
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33431
Deposited By: Tony Diaz
Deposited On:27 Aug 2012 23:14
Last Modified:03 Oct 2019 04:09

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