Amino-Modified Fe-Terephthalate Metal-Organic Framework as an Efficient Catalyst for the Selective Oxidation of H2S

作者：Zheng, Xiao-Xiao; Shen, Li-Juan; Chen, Xiao-Ping; Zheng, Xiao-Hai; Au, Chak-Tong; Jiang, Li -Long^*

来源：Inorganic Chemistry, 2018, 57(16): 10081-10089.

DOI：10.1021/acs.inorgchem.8b01232

• HYDROGEN-SULFIDE
• ELEMENTAL SULFUR
• WET OXIDATION
• MIXED OXIDES
• IRON
• CO2
• NANOPARTICLES
• ADSORPTION
• ACID
• MOFS

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.

• 出版日期2018-8-20
• 单位福州大学