Oligomerization of Ethylene by Fe(salphen)/EAO and Fe(salen)/EAO Catalysts
Oligomerization of Ethylene by Fe(salphen)/EAO and Fe(salen)/EAO Catalysts作者机构:大连理工大学 碳资源综合利用开放实验室 辽宁 大连 116012
出 版 物:《Chinese Journal of Catalysis》 (催化学报)
年 卷 期:2000年第21卷第2期
页 面:99-100页
核心收录:
学科分类:081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金:SupportedbytheNationalNaturalScienceFoundationofChina!(29773008) theFoundationofOpenLaboratoryofComprehensiveUtilizationforCa
主 题:ethylene oligomerization iron complexes ethylaluminoxane
摘 要:The oligomerization was studied of ethylene catalyzed by Fe(salphen) (A, salphen = N,N -o-phenylenebis (salicylideneaminato)) and Fe(salen) (B, salen = N,N -ethylenebis (salicylideneaminato)) which were prepared according to earlier description. The catalytic activity and selectivity of the two complexes with EAO (ethylaluminoxane) as cocatalyst for ethylene oligomerization were studied at various reaction temperatures, Al/Fe ratios, and reaction time. Both A and B showed higher catalytic activity and selectivity for low-carbon olefins. The catalytic activity of A/EAO and B/EAO catalysts for ethylene oligomerization were strongly affected by the reaction temperatures. When temperature was raised from 90°to 200°C, the activity increased by 25 times for A/EAO and by 26 times for B/EAO. Both catalysts displayed decreased selectivity for low-carbon linear α-olefins as the temperature was raised. The effect of n(Al)/n(Fe) ratio on ethylene oligomerization was also studied.