Rate constants for the gas-phase reactions of OH radicals with a series of hydroxyaldehydes at 296 ± 2 K

被引：40

作者：

Baker, J ^{[1
]}

Arey, J ^{[1
]}

Atkinson, R ^{[1
]}

机构：

[1] Univ Calif Riverside, Air Pollut Res Ctr, Riverside, CA 92521 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2004年 / 108卷 / 34期

关键词：

D O I：

10.1021/jp048979o

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Using a relative rate method with in situ generation of the hydroxyaldehydes, rate constants for the reactions of the OH radical with 2-hydroxybutanal [CH3CH2CH(OH)CHO], 3-hydroxybutanal [CH3CH(OH)CH2CHO], 2-hydroxypropanal [CH3CH(OH)CHO], 2-hydroxy-2-methylpropanal [(CH3)(2)C(OH)CHO], and 3-hydroxypropanal [HOCH2CH2CHO] have been measured at atmospheric pressure and 296 +/- 2 K. The hydroxyaldehydes were generated in situ from the OH radical-initiated reactions of precursor compounds (1,2- and 1,3-butanediol, 2-methyl-2,4-pentanediol, 2-methyl-3-buten-2-ol, and cis-3-hexen-1-ol) and the rate constants for the reaction of OH radicals with the hydroxyaldehydes were determined relative to those for reaction of OH radicals with the precursor compound. The rate constants obtained (in units of 10(-11) cm(3) molecule(-1) s(-1)) were CH3CH2CH(OH)CHO, 2.37 +/- 0.23; CH3CH(OH)CH2CHO, 2.95 +/- 0.24; CH3CH(OH)CHO, 1.70 +/- 0.20; (CH3)(2)C(OH)CHO, 1.40 +/- 0.25; and HOCH2CH2CHO, 1.99 +/- 0.29.

引用

页码：7032 / 7037

页数：6