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基于在雷尼镍催化剂作用下,甲醇水相重整产氢和糠醛液相加氢两反应的反应条件(温度、压力、液相)相近,研究了不需要外部提供氢源的情况下,液相原位还原糠醛的可行性。通过反应温度、反应物配比和催化剂用量的优化实现了水相制氢与液相加氢二个反应较好的耦合,在反应温度120℃、反应压力0.8MPa和水、甲醇、糠醛的体积比为25:125:5的条件下,原位加氢产物糠醇的选择性优于传统的液相加氢还原法,为糠醛选择性加氢提供了一条新的技术路线。
Based on the reaction conditions (temperature, pressure, liquid phase) of the two reactions of methanol-water reforming and furfural hydrogenation in the presence of Raney nickel catalyst, Feasibility of in situ reduction of furfural. Through the optimization of the reaction temperature, the ratio of the reactants and the amount of the catalyst, the coupling between the aqueous phase hydrogenation and the liquid phase hydrogenation is better. Under the conditions of a reaction temperature of 120 ℃, a reaction pressure of 0.8MPa and the volume of water, methanol and furfural Ratio of 25: 125: 5, the selectivity of the in-situ hydrogenated product furfuryl alcohol is better than the traditional liquid hydrogenation reduction method, which provides a new technical route for the selective hydrogenation of furfural.