Kinetic study of the reactions of Br with HO2 and DO2

被引：14

作者：

Bedjanian, Y ^{[1
]}

Riffault, V

Le Bras, G

Poulet, G

机构：

[1] CNRS, Lab Combust & Syst Reactifs, F-45071 Orleans 2, France

[2] Univ Orleans, F-45071 Orleans, France

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2001年 / 105卷 / 03期

关键词：

D O I：

10.1021/jp002731r

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：

The kinetics of the reactions of Br atoms with HO2 and DO2 radicals, Br + HO2 --> HBr + O-2 (1), and Br + DO2 --> DBr + O-2 (3), have been studied by the mass spectrometric discharge-flow method at temperatures between 230 and 355 K and at a total pressure of 1 Torr of helium. The rate coefficients measured under pseudo-first-order conditions in excess Br yield the following Arrhenius expressions: k(1) = (4.9 +/- 0.7) x 10(-12) exp[-(310 +/- 40)/T] and k(3) = (1.9 +/- 0.4) x 10(-12) exp[-(540 +/- 60)/T] cm(3) molecule(-1) s(-1) (uncertainties are 2 sigma). The k(3) value is measured for the first time and that of k(1) is compared with those from previous studies.

引用

页码：573 / 578

页数：6

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