Abstract
A new series of (bpy)Ni(II) grafted Ni-SBA-15 catalysts was prepared from treating well-defined mesoporous silica SBA-15 (4 nm in diameter) with various concentrations of bpy based ligand (L1) followed by metalation with NiCl2 for ethylene oligomerization. These new heterogeneous catalysts displayed outstanding catalytic activity depending on the loading density of Ni on SBA-15. In other words, 4 (0.21 wt% of Ni) showed much better intrinsic activity towards butene (IA = 3605 ± 28 molProduct/molNih) than that of 1 (2.25 wt% of Ni; IA = 911 ± 28 molProduct/molNih), suggesting that the formation of higher molecular weight side products was successfully inhibited by reducing the local concentration of catalyst on mesoporous silica SBA-15.
Original language | English |
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Article number | 117363 |
Journal | Applied Catalysis A: General |
Volume | 590 |
DOIs | |
Publication status | Published - 2020 Jan 25 |
Bibliographical note
Funding Information:Authors acknowledge the financial support of the Research Foundation Program (NRF-2019R1A2C1088688) through the National Research Foundation of Korea (NRF). The authors also thank Korea Basic Science Institute (KBSI) for allowing the usage of their TEM instruments and CNB Lab.
Funding Information:
Authors acknowledge the financial support of the Research Foundation Program ( NRF-2019R1A2C1088688 ) through the National Research Foundation of Korea (NRF). The authors also thank Korea Basic Science Institute (KBSI) for allowing the usage of their TEM instruments and CNB Lab. Appendix A
Publisher Copyright:
© 2019 Elsevier B.V.
Keywords
- Catalyst
- Ethylene oligomerization
- Heterogeneous
- Intrinsic activity
- SBA-15
ASJC Scopus subject areas
- Catalysis
- Process Chemistry and Technology