Journal
INORGANIC CHEMISTRY
Volume 57, Issue 16, Pages 10081-10089Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.8b01232
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Funding
- Natural Science Foundation of China [21603034]
- National Key Research and Development Program of China [2018YFA0209304]
- Natural Science Foundation of Fujian Province [2017J05022]
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Classical amino-functionalized Fe-terephthalate metal organic framework NH2-MIL-53(Fe) and its parent framework MIL-53(Fe) were prepared via simple hydrothermal methods. The catalytic performaces of these two Fe-MOFs were explored for the selective oxidation of H2S. The physicochemical properties of the fresh and used FeMOFs catalysts were investigated by XRD, BET, SEM, FT-IR, CO2-TPD, and XPS techniques. It was found that the introduction of amino groups reduces the activation energies for H2S oxidation and endows this catalyst surface with moderate basic sites. As a result, the NH2-MIL-53(Fe) catalyst displays high H2S conversion and near 100% S selectivity in the temperature range of 130-160 degrees C, outperforming commercial Fe2O3 and activated carbon. Moreover, a plausible reaction route for H2S selective oxidation over NH2-MIL-53(Fe) is proposed. This work opens up the possibility of utilizing MOFs as efficient catalyst for desulfuration reactions.
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