CF3BR-H-2 REACTION IN SHOCK-WAVES

被引：22

作者：

HIDAKA, Y ^{[1
]}

NAKAMURA, T ^{[1
]}

KAWANO, H ^{[1
]}

KOIKE, T ^{[1
]}

机构：

[1] NATL DEF ACAD,DEPT CHEM,YOKOSUKA,KANAGAWA 239,JAPAN

来源：

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS | 1993年 / 25卷 / 12期

关键词：

D O I：

10.1002/kin.550251202

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：

CF3Br-H-2 mixtures highly diluted with Ar were studied by using a time-resolved IR-emission of HBr and a gas-chromatography for reaction products. The temperature range covered was 1000-1600 K and the total pressure behind the reflected shock waves used was 1.2-2.6 atm. CF3H, C2F6, and C2F4 were produced and the yields of these products were determined as a function of temperature. The main product under our experimental conditions was CF3H. The mechanism and the rate constants of CF3Br-H-2 reaction at high temperatures were discussed. The experimental data was satisfactorily modeled using a 14-reaction mechanism. Reaction (5) played an important role in the formation of CF3H together with reaction (4). (4) CF3 + HBr --> CF3H + Br (5) CF3 + H-2 --> CF3H + H The rate constant expression k5 = 2.2 x 10(13) exp(- 12 kcal/RT) cm3 mol-1 s-1 gave the best agreement between the calculated and observed results. (C) 1993 John Wiley & Sons, Inc.

引用

页码：983 / 993

页数：11

共 22 条

[1] REACTIONS OF TRIFLUOROMETHYL RADICALS WITH IODINE AND HYDROGEN IODIDE [J].