Chromium-based selective ethylene tri-/tetramerization catalysts supported by two-carbon bridged diphosphine ligands

被引：2
|
作者：
Wu, Hongfei [1 ]
Kong, Weihuan [2 ,3 ]
Wu, Chunhong [1 ]
Zhao, Xing [2 ,3 ]
Hu, Songshuang [1 ]
Zhang, Jun [2 ,3 ]
机构：
[1] SINOPEC Beijing Res Inst Chem Ind Co Ltd, Yanshan Branch, Beijing 102500, Peoples R China
[2] East China Univ Sci, Key Lab Adv Mat, 130 Mei Long Rd, Shanghai 200237, Peoples R China
[3] East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, 130 Mei Long Rd, Shanghai 200237, Peoples R China
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2024年 / 1012卷
基金：
中国国家自然科学基金;
关键词：
Diphosphine ligands; Chromium(iii) catalysts; Ethylene trimerization; Ethylene tetramerization; OLIGOMERIZATION; TRIMERIZATION; TETRAMERIZATION; 1-OCTENE; TRIMERIZATION/TETRAMERIZATION; SUBSTITUENT; PERFORMANCE; PHOSPHANYL; ROUTE; ALKYL;
D O I：
10.1016/j.jorganchem.2024.123125
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The effect of backbone-substituent of carbon-bridged diphosphine ligands of the type {Ph2PC(COOR)=C(COOR) PPh2} on the catalyst performance in ethylene oligomerization has been explored. The Cr precatalyst supported by the ligand {Ph2PC(COOMe)=C(COOMe)PPh2} (L1) achieved a high activity of 1800 kg/g Cr/h with a total selectivity of 90.8 % toward 1-hexene (77.3 %) and 1-octene (13.5 %) when activated with MMAO-3A. The catalytic system based on these ligands exhibited considerably high thermal stability, maintaining high activity even at 100 o C.
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页数：5
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