TY - JOUR
T1 - Ultra-Highly Active Ni-Doped MOF-5 Heterogeneous Catalysts for Ethylene Dimerization
AU - Chen, Cailing
AU - Meng, Lingkun
AU - Alalouni, Mohammed R.
AU - Dong, Xinglong
AU - Wu, Zhi Peng
AU - Zuo, Shouwei
AU - Zhang, Huabin
N1 - Funding Information:
C.C. and L.M. contributed equally to this work. The authors thank Prof. Yu Han for his strong support and meaningful discussion. The financial support for this work was provided by Baseline Funds (BAS/1/1372‐01‐01) and Research Translation Funds (REI/1/4220‐01‐01) from King Abdullah University of Science and Technology (KAUST). The authors also thank Dr. Xueyin Bai for his helpful suggestions.
Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2023/6/21
Y1 - 2023/6/21
N2 - Here, an ultra-highly active Ni-MOF-5 catalyst with high Ni loading for ethylene dimerization is reported. The Ni-MOF-5 catalysts are synthesized by a facile one-pot co-precipitation method at room temperature, where Ni2+ replaces Zn2+ in MOF-5. Unlike Zn2+ with tetrahedral coordination in MOF-5, Ni2+ is coordinated with extra solvent molecules except for four-oxygen from the framework. After removing coordinated solvent molecules, Ni-MOF-5 achieves an ethylene turnover frequency of 352 000 h−1, corresponding to 9040 g of product per gram of catalyst per hour, at 35 °C and 50 bar, far exceeding the activities of all reported heterogeneous catalysts. The high Ni loading and full exposure structure account for the excellent catalytic performance. Isotope labeling experiments reveal that the catalytic process follows the Cossee–Arlman mechanism, rationalizing the high activity and selectivity of the catalyst. These results demonstrate that Ni-MOF-5 catalysts are very promising for industrial catalytic ethylene dimerization.
AB - Here, an ultra-highly active Ni-MOF-5 catalyst with high Ni loading for ethylene dimerization is reported. The Ni-MOF-5 catalysts are synthesized by a facile one-pot co-precipitation method at room temperature, where Ni2+ replaces Zn2+ in MOF-5. Unlike Zn2+ with tetrahedral coordination in MOF-5, Ni2+ is coordinated with extra solvent molecules except for four-oxygen from the framework. After removing coordinated solvent molecules, Ni-MOF-5 achieves an ethylene turnover frequency of 352 000 h−1, corresponding to 9040 g of product per gram of catalyst per hour, at 35 °C and 50 bar, far exceeding the activities of all reported heterogeneous catalysts. The high Ni loading and full exposure structure account for the excellent catalytic performance. Isotope labeling experiments reveal that the catalytic process follows the Cossee–Arlman mechanism, rationalizing the high activity and selectivity of the catalyst. These results demonstrate that Ni-MOF-5 catalysts are very promising for industrial catalytic ethylene dimerization.
KW - ethylene dimerization
KW - heterogeneous catalysts
KW - metal-organic frameworks
KW - Ni-doping
UR - http://www.scopus.com/inward/record.url?scp=85150749308&partnerID=8YFLogxK
U2 - 10.1002/smll.202301235
DO - 10.1002/smll.202301235
M3 - Article
C2 - 36922746
AN - SCOPUS:85150749308
SN - 1613-6810
VL - 19
JO - Small
JF - Small
IS - 25
M1 - 2301235
ER -