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.

引用

页数：5

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