化工学报2017，Vol.68Issue(3)：903-909,7.DOI:10.11949/j.issn.0438-1157.20161076
超支化大分子桥联水杨醛亚胺钴催化剂催化乙烯低聚
Ethylene oligomerization using hyperbranch-macromolecule-bridged salicylaldimine cobalt catalysts
摘要
Abstract
Three novel hyperbranch-macromolecule-bridged salicylaldimine cobalt catalysts were synthesized by Schiff and complex reactions of 1.0G hyperbranched macromolecules, salicylaldehyde, and cobalt chloride hexahydrate, and were characterized by FT-IR, UV, MS and TG. The influences of solvent, co-catalyst, reaction temperature, reaction pressure, and Al/Co molar ratio on their catalytic performances in ethylene oligomerization were studied. The results showed that the hyperbranch-macromolecule-bridged salicylaldimine cobalt catalysts had excellent catalytic activities and selectivity for ethylene oligomerization of high carbon number olefins (C10+). The catalytic activity first increased and then decreased with the increase of reaction temperature and Al/Co molar ratio, however, it continuously increased with the increase of reaction pressure. The highest activity of 1.87×105 g·(mol Co)?1·h?1 and 42.90% selectivity for high carbon number olefins were achieved under the condition of toluene as solvent, DEAC as co-catalyst, reaction temperature at 25℃, reaction pressure at 0.5 MPa, and Al/Co molar ratio at 500.关键词
超支化大分子/钴配合物/催化剂/乙烯低聚/活化/活性Key words
hyperbranched macromolecule/cobalt complex/catalyst/ethylene oligomerization/activation/reactivity分类
化学化工引用本文复制引用
张娜,王斯晗,王嘉明,李翠勤,王俊..超支化大分子桥联水杨醛亚胺钴催化剂催化乙烯低聚[J].化工学报,2017,68(3):903-909,7.基金项目
国家自然科学基金项目(21576048) （21576048）
中国石油科技创新基金研究项目(2014D-5006-0503).supported by the National Natural Science Foundation of China (21576048) and the PetroChina Innovation Foundation (2014D-5006-0503). （2014D-5006-0503）
