Article,

Experimental and theoretical studies of gas phase NO3 and OH radical reactions with formaldehyde, acetaldehyde and their isotopomers

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Physical Chemistry Chemical Physics, 5 (9): 1790--1805 (January 2003)
DOI: 10.1039/b211234p

Abstract

The vapour phase reactions of formaldehyde, formaldehyde-d(2), C-13-formaldehyde, acetaldehyde, acetaldehyde-1-d(1), acetaldehyde-2,2,2-d(3), and acetaldehyde-d(4) with NO3 and OH radicals were studied at 298 +/- 2 K and 1013 +/- 10 mbar using long-path FTIR detection. The values of the kinetic isotope effects at 298 K, as determined by the relative rate method, were: k(NO3)+ HCHO/k(NO3+DCDO) = 2.97 +/- 0.14, k(NO3+HCHO)/ k(NO3+H13CHO) = 0.97 +/- 0.02, k(OH+HCHO)/k(OH+DCDO) = 1.62 +/- 0.08, and k(OH+H13CHO)/k(OH+DCDO) = 1.64 +/- 0.12, k(OH+HCHO)/k(OH+H13CHO) = 0.97 +/- 0.11, k(NO3+CH3CHO)/k(NO3+CD3CHO) = 1.19 +/- 0.11, k(NO3+CH3CHO)/ k(NO3+CD…(more)

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