论文部分内容阅读
以MoCL_2(C_7H_(15)COO)_2-(i-Bu)_2AlOPh为催化剂,在加氢汽油中,对丁二烯聚合动力学进行了研究。考察了单体浓度、催化剂浓度以及聚合温度等因素对栗合速度的影响,测定了有关动力学参数。试验结果表明,单体浓度和主催化剂浓度对聚合速度均呈一级关系,聚合总活化能为8.368×10~4J/mol,催化剂利用率约为1.2％,活性中心浓度约为9.6x10~(-6)mol/l。在40—60℃范围内,链增长速度常数随聚合温度升高迅速增加,而活性中心的平均寿期则随温度的升高而降低。
The kinetics of butadiene polymerization in hydrogenated gasoline was studied with MoCl_2 (C_7H_ (15) COO) _2- (i-Bu) _2AlOPh as catalyst. The effects of monomer concentration, catalyst concentration and polymerization temperature on the speed of chestnuts were investigated. The kinetic parameters were also determined. The experimental results show that the monomer concentration and the concentration of the main catalyst have a first-order relationship with the polymerization rate, the total activation energy of the polymerization is 8.368 × 10 ~ 4J / mol, the catalyst utilization rate is about 1.2%, and the active center concentration is about 9.6 × 10 ~ ( -6) mol / l. In the range of 40-60 ℃, the chain growth rate constant increases rapidly with the increase of the polymerization temperature, while the average life of the active center decreases with increasing temperature.