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Rate constants for reactions of OH radicals with a series of asymmetrical ethers and tert-Butyl alcohol

โœ Scribed by S. Teton; A. Mellouki; G. Le Bras; H. Sidebottom

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
483 KB
Volume
28
Category
Article
ISSN
0538-8066

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โœฆ Synopsis

Absolute rate constants for the reactions of OH radicals with butyl ethyl ether ( k , ) , methyl tertbutyl ether (k2), ethyl tert-butyl ether ( k ] ) , tert-amyl methyl ether ( k 4 ) ) , and tert-butyl alcohol ( k 5 ) have been measured over the temperature range 230-372 K using a pulsed laser photolysislaser induced fluorescence (PLP-LIF) technique The temperature dependence of k, -k, when expressed in Arrhenius form gave k , = ( 6 59 -C 0 66) X expl(362 5 60)/TI, k2 =

( 5 03 +-0 271 X expl(210 -t 37)/T], k4 = I4 7 ? 0 7) X lo-" expl(82 ? 8 5 ) / T l , and k5 = ( 2 66 i-0 4 8 ) X expIp(270 i-1301/T] However, the Arrhenius plots for k , -hg. were slightly curved and are best fitted by the three parameter fits which are given in the article The room temperature values of k , k 2 , h 3 , k 4 , and k5 are ( 2 0 8 ? 023) X l o -" , ( 3 13 i-0 36) X lo-", (880 ? 0.50) X 16 28 i-0 451 X and ( I 08 i-0 10) X lo-" respectively, in cm3 molecule-' s -' 0 1996 lotiri Wiley & Sons, Inc expl-(133 i-30)/TI, k3 = (4.40 ? 0 24) X

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