摘要
用单脉冲激波管研究了全氟丙烯C3F6的分解。使用H2作为清扫剂。产物包括 CH4、 C2F4、 CF3H和C2F3H，作为对断键反应过程的指示。C3F6的断键反应为C3F6 CF3+C2F3（1）得到其速率常数表达式为k（C3F6 CF3+C2F3)=10(17.4±0.2)exp-355300±8360RT s-1温度范围为1090 K<T<1190 K。全氟丙烯上，乙烯基C-CF3键的解离能为355.3 kJ/mol。C3F6生成焓值为-1078.4 kJ/mol。
Perfluoropropylene C3F6 has been decomposed in presence of scavenger H2in single pulse shock tube. The products CH4, C2F4,CF3H and C2F3H are obtained and used as a measure of the rate of the cleavage of the vingl-methyl C-C bond in C3F6 C3F6 CF3+C2F3The rate expression for this reaction has been found to bek（ C3F6CF3+C2F3)=10（17.4±0.2)exp-355300±8360 RT s-1 (1090K< T <1190K)The results are consistent with a bond dissociation energy for primary vinyl C-CF3bond in perfluoropropylene of 355.3 kJ/mol. The formation enthalpy of C3F6, ΔHf0 (C3F6)=-1078.4 kJ/mol is obtained.
基金
国家自然科学基金(29070150)
中国科学院“八五”重点项目
燃烧基础问题研究
中国空气动力研究与发展中心支持项目
关键词
全氟丙烯
分解
激波管
Perfluoropropylene
Decomposition
Shock tube
