초록 |
While linear α-olefins (LAOs) synthesis via selective ethylene oligomerization has been extensively studied, the selectivity control for C4–C8 LAOs over a heterogeneous catalyst remains an elusive goal. In this work, we propose a new and efficient catalyst design for the ethylene oligomerization; heterogeneous bimetallic FexNi1-xBTC framework (benzene-1,3,5-tricarboxylate). While Fe-BTC was ineffective in promoting the ethylene oligomerization, the incorporation of Fe in the Ni-BTC structure exerted large influence on the α-olefin selectivity. It was revealed that the Ni/Fe ratio played a crucial role in attaining a high α-olefin selectivity, and the activity and 1-C6 and 1-C8 selectivity reached as high as 230.5 g.gNi-1.h-1 and 15 wt%, respectively, in the presence of the bimetallic Fe0.1Ni0.9-BTC catalyst and MMAO at 60oC and 30 bar. The excellent selectivity demonstrates the potential application of MOF catalysts for the ethylene oligomerization. |