【摘要】 本工作研究了环烷酸镍-丁二烯-三氯化硼乙醚络合物-三异丁基铝（简称Ni-Bd-B-Al）四元体系催化 Bd聚合反应动力学,并同三元体系（Ni-B-Al）进行了比较。结果表明:Bd的存在能提高聚合速度及主催化剂的利用率,但不改变聚合反应的表观活化能;聚合速度与单体浓度、主催化剂浓度均呈一级动力学关系;其动力学方程为 -d[Bd]/dt=k_pa[C₀][Bd] 1/DP=a[C₀]/[Bd₀]x+k_trm/k_p温度升高,反应速度加快,聚合物分子量下降。更多还原

【Abstract】 The kinetics behaviour of butadiene polymerization with nickel naphthe-nate-butadiene-trifluorinated boron ethyl ether complexes-triisobutyl aluminum (Ni-Bd-B-Al)as catalyst system in hydrogenated gasoline was studied. The catalytic activity of Ni-Bd-B-Al system was compared to that of Ni-B-A1 system. The results showed that in the presence of Bd the rate of polymerization was increased, and the efficiency of the master catalyst also improved. The total activation energy for butadiene polymerization with Ni-Bd-B-Al system was 11.2 kcal/mol, which was similar to that of Ni-B-Al system.The rate of polymerization was first order with respect to both concentrations of monomer and master catalyst.The polymerization rate increased but the polymer molecular weight decreased with increasing polymerization temperature. The experimental polymerization rate law could be expressed as follows:更多还原