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用单脉冲激波管研究了有少量ＣＦ３Ｃｌ参予下的ＣＦ４与Ｈ２的混合物在高温下的反应动力学，发现主要产物为Ｃ２Ｆ４和ＣＦ３Ｈ．对实验结果的分析表明，反应过程为一个双中心链反应。始发反应为ＣＦ３Ｃｌ的Ｃ—Ｃｌ键的断裂，继之以由Ｈ２和ＣＦ４为媒介的双中心链传递，最后测得温度由１０００至１０８０Ｋ，压力为０．１ＭＰａ下的ＣＦ４表观分解速率常数为Ｋｅｆｆ＝１０１３．７ｅｘｐ（－５５０００／ＲＴ）１１／２ｍｏｌ－１ｓ－１对这一结果进行分析，得到以下相关的反应速度常数ｋ（ＣＦ３Ｃｌ→ＣＦ３＋Ｃｌ·）＝１０１５ｅｘｐ（－８１０００／ＲＴ）ｓ－１ｋ（ＣＦ３＋Ｈ２→ＣＦ３Ｈ＋Ｈ·）＝１０８．６ｅｘｐ（－８８００／ＲＴ）１·ｍｏｌ－１·ｓ－１ｋ（ＣＦ４＋Ｈ·→ＣＦ３·＋ＨＦ）＝１０１１．４ｅｘｐ（Ｇ２００００／ＲＴ）１·ｍｏｌ－１·ｓ－１ｋ（ＣＦ３·＋Ｈ·→ＣＦ３Ｈ）＝１０８．０１·ｍｏｌ－１·ｓ－１
The kinetics of the reaction between CF4 and H2 with a small amount of CF3Cl under high temperature was investigated using a single pulse shock tube. The main products were found to be C2F4 and CF3H. The analysis of the experimental results shows that the reaction process is a double-center chain reaction. The onset reaction was the cleavage of the C-Cl bond of CF3Cl followed by the bicentrifugal chain mediated by H2 and CF4 and finally the apparent decomposition rate constants of CF4 at temperatures from 1000 to 1080 K at a pressure of 0.1 MPa The results were analyzed for Keff = 1013.7exp (-55000 / RT) 11/2 mol-1s-1 to yield the following related reaction rate constant k (CF3Cl → CF3 + Cl ·) = 1015exp (-81000 / RT) 1k (CF3 + H2 → CF3H + H ·) = 108.6exp (-8800 / RT) 1 · mol -1 · s -1k (CF 4+ H ··· CF 3 · + HF) = 1011.4exp (G 20000 / RT) 1 · mol -1 · s -1k (CF3 · + H · → CF3H) = 108.01 · mol-1 · s-1