CF_2HCl裂解成C_2F_4的研究已有较长的历史,近年来,作者之一曾利用激光诱导荧光方法实时(in real time)测定CF_2的浓度,对这一均相单分子反应过程的了解更趋清楚。最近我们利用激光加热法测定了CF_2HCl在Pt、Ag,及Ni-Cr金属表面上的复相反应速率,发现CF_2HCl在Pt及Ag上的反应速率此在Ni-Cr表面上的反应速率要快,并且反应温度阈值低很多,但是由于Pt及Ag价值昂贵,难以在生产上推广。为此,本文研究CF_2HCl The research on the cleavage of CF_2HCl to C_2F_4 has a long history. In recent years, one of the authors has used laser-induced fluorescence to measure the concentration of CF_2 in real time, and has become more aware of this homogeneous single-molecule reaction process . Recently, we measured the complex reaction rates of CF_2HCl on Pt, Ag and Ni-Cr metal surfaces by laser heating. The reaction rate of CF_2HCl on Pt and Ag was found to be faster on the Ni-Cr surface. And the reaction temperature threshold is much lower, but due to the high value of Pt and Ag, it is difficult to promote in the production. To this end, this paper studies CF_2HCl