The fixation of CO2 by epoxides over nickel-pyrazolate-based metal–organic frameworks

CO2 emissions reduction is one of the major concerns of human beings. The cycloaddition of CO2 and an epoxide to form a cyclic carbonate is a promising reaction for reducing atmospheric CO2 while also producing valuable industrial chemicals. In this work, we developed a series of Ni-pyrazolate-based...

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Bibliographic Details
Published in:New journal of chemistry 2020-01, Vol.44 (42), p.18319-18325
Main Authors: Wang, Zheng, Xie, Qianjie, Wang, Yajun, Yu, Shu, Li, Cong, Shen, Yehua
Format: Article
Language:eng ; jpn
Subjects:
Benzene
Carbon dioxide
Catalysts
Cycloaddition
Hydrocarbons
Lewis acid
Metal-organic frameworks
Nickel
Nitrogen dioxide
Recyclability
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Summary:CO2 emissions reduction is one of the major concerns of human beings. The cycloaddition of CO2 and an epoxide to form a cyclic carbonate is a promising reaction for reducing atmospheric CO2 while also producing valuable industrial chemicals. In this work, we developed a series of Ni-pyrazolate-based metal–organic framework (MOF) catalysts, Nibdp-X (X = H and NO2) and Ni3btp2, to catalyze this reaction under solvent-free conditions. Herein, bdp and btp are 1,4-(4-bispyrazolyl)benzene and 1,3,5-tris(1H-pyrazol-4-yl)benzene, respectively. The unsaturated metal centers (or Lewis acid sites) in the MOFs play a key role in the cycloaddition of CO2 and epoxide. The catalytic performance of the catalysts is significantly influenced by the density and accessibility of Lewis acid sites. Moreover, the recyclability of the MOF catalysts was studied as well.
ISSN:1144-0546
1369-9261
DOI:10.1039/d0nj03692g