✦ LIBER ✦

The reaction of OH with CO

✍ Scribed by B. K. T. Sie; R. Simonaitis; J. Heicklen

Publisher: John Wiley and Sons
Year: 1976
Tongue: English
Weight: 571 KB
Volume: 8
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550080109

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✦ Synopsis

Hydroxyl radicals were prepared from the photolysis of N2O at 21 3.9 n m in the presence

The O ( ' D ) produced in the primary photolytic act reacts with Hz to produce ofexcess Hz.

OH radicals. If CO is also present, then OH can react either with H2 or C O :

The competition between reactions (1) and ( 2) was measured by measuring the COP yield at various values of the ratio [CO]/[H,] at 217-298°K. At 298°K the ratio of the rate coefficients kl/k2 increased with pressure from a low-pressure limiting value of 14 to a highpressure limiting value of 50. The low-pressure limiting value agrees well with the lowpressure values found by others. At lower temperatures our high-pressure values of kl/kz were larger than deduced from the accepted low-pressure Arrhenius expression and could be fitted to the expression klm/k2 = 0.20 exp (+3400/RT)

The mechanism which seems to fit the results best is (a,-a)

OH + CO e HOCO

📜 SIMILAR VOLUMES

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Rate coefficients and product ion distributions for the reactions of OH+ and H2O+ with N2 , O2, NO. N2O, Xe, CO, CO2, H2S and H2 at 300 K

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The rdt, cocii~c~cnts and product eon dlsrrlbutlons for rhc reactions ot OH\* and tlzO+ u ith N2\_ 02 h'0 X20 Xc, CO, CO? H2S Jnd 112 hd\c been dctermlned it 194 + 2 K usmg a selcctcd ton ilo\. rubc (SIFT) dppclrnrus These reactIons urre generally found to proLccd b\~ athcr proton or charge trsnsfcr