期刊
MACROMOLECULES
卷 50, 期 7, 页码 2675-2682出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.7b00121
关键词
-
资金
- National Natural Science Foundation of China (NSFC) [21374134, 21674130]
- Natural Science Foundation of Guangdong Province [1414050000552]
- Science and Technology Planning Project of Guangzhou City [201510010070]
- Fundamental Research Funds for the Central Universities [15lgzd03]
Development of thermally stable nickel-based catalysts is highly desirable for industrial gas-phase olefin polymerizations. On the basis of the strategy of promoting the thermostability of nickel catalyst by the ligand backbone, we herein reported novel dibenzobarrelene-derived a-diimine nickel precatalysts for ethylene polymerization. Increasing the steric bulk on the ligand backbone was expected to inhibit the N-aryl rotation of the a-diimine ligands by the repulsive interactions, thus enhancing thermal stability (100 degrees C) and living fashion a temperatures up to 80 degrees C. Bulk ligand backbone also improved tolerance of nickel catalyst toward polar groups, and the alpha-diimine nickel catalyst containing a 2,6-Bu-t-dibenzobarrelene backbone catalyzed living copolymerization of ethylene and methyl 10-undecenoate.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据