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Wang, Yuan; Liu, Shanshan; Zhang, Yidong; Guo, Qirui
Catalysis letters, 06/2023, Letnik: 153, Številka: 6Journal Article
Hydrogenation of biomass-derived furfuryl alcohol to widely used tetrahydrofurfuryl alcohol is an important industrial route, which however calls for a more efficient catalyst. In this work, a highly selective and stable Ni-C-Al.sub.2O.sub.3 catalyst for furfuryl alcohol hydrogenation to tetrahydrofurfuryl alcohol is reported. The catalyst precursor is prepared by in-situ growth of Ni-based metal organic frameworks (Ni-BTC) on Al.sub.2O.sub.3 and then the precursor undergoes thermal decomposition to obtain the catalyst directly. For comparison, Ni-C/Al.sub.2O.sub.3 acquired from pyrolysis of physically mixed Ni-MOFs with Al.sub.2O.sub.3 and Ni/Al.sub.2O.sub.3 prepared by impregnation method are also tested as the hydrogenation catalysts. The prepared catalysts are characterized by a series of techniques, including XRD, FT-IR, TG, TEM, SEM, XPS and BET to reveal the relationship between the catalysts structure and their performance. The results show that small metal Ni particle size and appropriate interaction between Ni and the support, which benefit from the in-situ preparation method are key factors that ensure the high furfuryl alcohol conversion (99.8%) and high selectivity to tetrahydrofurfuryl alcohol (98.2%) at moderate reaction conditions (120 °C, 30 min, 4 MPa H.sub.2).
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