Yunjang Gu, Sunghyun Yoon, Robin Babu, Yongchul G. Chung, Dae-Won Park
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引用次数: 0
Abstract
We investigated the effect of linker defects induced by recycling MOF-508, a metal–organic framework with dual linkers, for the catalytic cycloaddition of the CO2 reaction. MOF-508 catalysts are characterized using various analytical techniques such as powder XRD, FT-IR, FE-SEM, HR-TEM, TGA, BET, NH3- and CO2-TPD, NMR, and CO2 adsorption isotherm. MOF-508 catalysts could perform the coupling reaction between epoxide and CO2 with > 99% selectivity toward cyclic carbonates under solvent-free and moderate reaction conditions. After the cycloaddition reaction, the recycled MOF-508 exhibited higher catalytic activity than freshly prepared MOF-508 at all the temperature ranges. The origin of increased cyclic catalytic activities was attributed to the creating of additional catalytic active sites from the linker defects. Molecular modeling techniques were used to elucidate the catalytic mechanism and quantify the degree of linker defects in MOF-508.
期刊介绍：
Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields:
-kinetics of homogeneous reactions in gas, liquid and solid phase;
-Homogeneous catalysis;
-Heterogeneous catalysis;
-Adsorption in heterogeneous catalysis;
-Transport processes related to reaction kinetics and catalysis;
-Preparation and study of catalysts;
-Reactors and apparatus.
Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.
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