均相催化合成甲基苯基二氯硅烷

Synthesis of Methylphenyldichlorosilane with a Homogeneous Catalyst

摘要:

以甲基氢二氯硅烷、氯苯为原料，氯仿为催化剂，采用气相催化缩合法合成了甲基苯基二氯硅烷，并通过气相色谱分析得到了产物的收率和选择性。详细探讨了反应温度、反应压力、停留时间对收率和选择性的影响。结果表明，气相催化缩合法合成甲基苯基二氯硅烷的最佳工艺条件为：反应温度600℃，反应压力P≥0.5MPa(表压)，停留时间46.9s~70.4s。以质量分数0.56%的氯仿为催化剂，当反应温度为600℃，反应压力(表压)为0.7MPa,停留时间为56.3s, 实验室得到的最高产物收率达32.8%，产物选择性为34.3%。

Abstract:

Methylphenyldichlorosilane was synthesized using methyldichlorosilane and chlorobenzene as raw materials and chloroform as the catalyst by an adaptation of the gas phase catalytic condensation method. The reaction yield and selectivity were measured by gas chromatography. The influences of the temperature, pressure and space time on the yield and selectivity were studied. The optimal reaction conditions were: temperature = 600℃, pressure > 0.5MPa, and space time = 32.2s ~ 70.4s. The highest product yield and selectivity were, respectively, 32.8% and 34.3%, which were obtained with the reaction condition of 0.56wt% CHCl3, 600 ℃, 0.7MPa and 56.3s space time.