TEMPERATURE-DEPENDENCE OF THE SELF-DECAY RATE CONSTANTS OF SOME PHENOXYL RADICALS IN AQUEOUS-SOLUTION

被引：9

作者：

ALFASSI, ZB ^{[1
]}

SHOUTE, LCT ^{[1
]}

机构：

[1] NATL INST STAND & TECHNOL,DIV CHEM KINET,GAITHERSBURG,MD 20899

来源：

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS | 1993年 / 25卷 / 02期

关键词：

D O I：

10.1002/kin.550250203

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 Arrhenius parameters of the bimolecular rate constants for the decay of several phenoxyl radicals in aqueous solution were measured. The p-halophenoxyl radicals (F, Cl, and Br) decay in a diffusion controlled reaction as the activation energies are the same as that of diffusion of water (16 +/- 1.5 kJ . mol-1). The A factors are 10(12.2 +/- 0.2). For alkyl and alkoxy substituted phenoxyl, slightly higher activation energies were found (19.5 - 21.9 kJ . mol-1).

引用

页码：79 / 90

页数：12