1,1,1,3,3-五氯丁烷合成反应动力学的研究

以Cu粉为催化剂、N,N-二甲基甲酰胺(DMF)为溶剂、CCl_4和2-氯丙烯为原料,进行调聚反应合成了1,1,1,3,3-五氯丁烷。考察了催化剂用量、反应压力、反应温度对合成反应的影响;同时研究了该合成反应的动力学。实验结果表明,适宜的1,1,1,3,3-五氯丁烷合成反应的条件为:催化剂用量0.028 mol,0.4 MPa,373 K,CCl_40.878 mol,2-氯丙烯0.595 mol,DMF用量1.040 mol。在此条件下采用假一级动力学方法确定,在353～393 K内,1,1,1,3,3-五氯丁烷合成反应为二级反应,表观活化能为76.8 kJ/mol,指数前因子为1.5×10~8,得到表观反应动力学方程。

Kinetics of 1,1,1,3,3-Pentachlorobutane Synthesis

1,1,1,3,3-pentachlorobutane was synthesized by telomerization from carbon tetrachloride and 2-chloropropene with copper powder as catalyst in dimethylformamide(DMF).The effects of catalyst dosage,reaction pressure,and temperature on the synthesis were investigated and reaction kinetics of 1,1,1,3,3-pentachlorobutane synthesis was studied.The proper reaction conditions are: catalyst dosage 0.028 mol,pressure 0.4 MPa,temperature 373 K,CCl_4 dosage 0.878 mol,2-chloropropene dosage 0.595 mol and solvent DMF dosage 1.040 mol.The telomerization is second-order reaction in ranges of 353-393 K by treating with pseudo-first-order method,the apparent activation energy is 76.8 kJ/mol,the pre-exponential factor is 1.5×10~8 and the apparent kinetic equation is obtained.