Abstract

Cu- and Fe-containing catalysts are studied in the reaction of selective hydrogenation of furfural to furfuryl alcohol (FA). The catalysts are prepared by alloying the respective metal nitrates and reduced before the reaction directly in the reactor at 250°C. The process is conducted in a batch reactor at 150°C and 6.0 MPa of hydrogen pressure. It is shown that the most active catalyst is Cu₂₀Fe₆₆Al₁₄, the furfural conversion and selectivity toward FA in the presence of which are 96 and 97 mol %, respectively. Inside a continuous-flow reactor in the presence of this catalyst, 100% furfural conversion can be attained at a selectivity toward FA of up to 95 mol % at 160°C and 5 MPa of hydrogen pressure. The resulting catalyst remains active for 30 h of continuous operation. The high activity of the copper–iron catalyst is likely due to the presence of stabilized finely divided copper particles in it.

中文翻译：

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在糠醛的选择性加氢中含铜催化剂存在下生产糠醇

摘要

在糠醛选择性加氢为糠醇（FA）的反应中研究了含铜和铁的催化剂。通过使相应的金属硝酸盐合金化并在直接在反应器中在250°C下反应之前将其还原来制备催化剂。该过程在间歇反应器中在150℃和6.0MPa的氢气压力下进行。结果表明，活性最高的催化剂是Cu ₂₀ Fe ₆₆ Al ₁₄，存在下糠醛的转化率和对FA的选择性分别为96和97mol％。在该催化剂的存在下，在连续流反应器内部，可以在160℃和5MPa的氢气压力下以高达95mol％的对FA的选择性实现100％的糠醛转化率。所得催化剂在连续运行30小时后仍保持活性。铜铁催化剂的高活性可能是由于其中存在稳定的细碎铜颗粒。