当前位置：
X-MOL 学术
›
Ind. Eng. Chem. Res.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Effects of the Ethoxide in the Coordination Sphere of Titanium on the Performance of MgCl2-Based Ziegler–Natta Catalyst
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-04-24 , DOI: 10.1021/acs.iecr.8b00844 Adriano G. Fisch 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-04-24 , DOI: 10.1021/acs.iecr.8b00844 Adriano G. Fisch 1
Affiliation
|
Traditional formulations of Ziegler–Natta catalysts that are based on magnesium ethoxide tend to generate titanium moieties presenting ethoxide ligand. It is suggested that the ethoxide group in the coordination sphere of titanium affects the catalyst activity and molecular weight distribution of the produced polymer. In the present work, a systematic synthesis of catalyst and chemical characterizations were accomplished with the objective of identifying correlations between the active sites presenting ethoxide as ligand and the performance of the catalyst in terms of activity and average molecular weight. Octahedral and trigonal-bipyramidal titanium moieties were identified as two groups of active sites in the catalyst. The ethoxide group as a ligand of the titanium was found in octahedral moieties only. Trigonal-bipyramidal titanium moieties have preferentially chlorine as ligands.
中文翻译：
钛配位域中的乙醇对MgCl 2基齐格勒-纳塔催化剂性能的影响
基于乙醇镁的齐格勒-纳塔催化剂的传统配方往往会生成具有乙醇氧化物配体的钛部分。建议钛的配位球中的乙氧基团影响催化剂活性和所生产聚合物的分子量分布。在目前的工作中，完成了催化剂的系统合成和化学表征，目的是鉴定以乙醇盐作为配体的活性位点与催化剂在活性和平均分子量方面的性能之间的相关性。八面体和三角双锥体的钛部分被确定为催化剂中的两个活性位点。仅在八面体部分中发现了乙醇氧基团作为钛的配体。
更新日期：2018-04-25
中文翻译：
钛配位域中的乙醇对MgCl 2基齐格勒-纳塔催化剂性能的影响
基于乙醇镁的齐格勒-纳塔催化剂的传统配方往往会生成具有乙醇氧化物配体的钛部分。建议钛的配位球中的乙氧基团影响催化剂活性和所生产聚合物的分子量分布。在目前的工作中，完成了催化剂的系统合成和化学表征，目的是鉴定以乙醇盐作为配体的活性位点与催化剂在活性和平均分子量方面的性能之间的相关性。八面体和三角双锥体的钛部分被确定为催化剂中的两个活性位点。仅在八面体部分中发现了乙醇氧基团作为钛的配体。
京公网安备 11010802027423号