文献类型：期刊文献

英文题名：Chromium-Based Selective Ethylene Tri-/Tetramerization Catalysts Supported by Two-Carbon Bridged Diphosphine Ligands

作者：Zhang, Jun[2]; Wu, Hongfei[1]; Kong, Weihuan[2]; Wu, Chunhong[1]; Zhao, Xin[2]; Hu, Songshuang[1]

机构：[1] Yanshan Branch, Beijing Research Institute of Chemical Industry, SINOPEC, Beijing, 102500, China; [2] Key Laboratory for Advanced Materials, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai, 200237, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240082561)

语种：英文

外文关键词：Carbon - Catalyst supports - Chromium - Ethylene

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 oC. ? 2024, The Authors. All rights reserved.