非晶态NiMoAl合金催化葡萄糖加氢制备山梨醇

Hydrogenation of Glucose to Sorbitol over Amorphous NiMoAl Alloys Catalyst

研究了非晶态NiMoAl在葡萄糖加氢制备山梨醇反应中的催化性能,考察了反应温度、压力和催化剂用量对反应的影响,并与5种钼改性骨架镍催化剂作了活性比较。结果表明,采用质量分数50%的葡萄糖水溶液,非晶态NiMoAl为催化剂,在温度135℃,压力4.0MPa下,原料100%转化,山梨醇选择性大于99%,催化剂连续套用5次,活性保持不变。

The amorphous NiMoAl alloy catalyst was used in liquid phase selective hydrogenation of glucose to sorbitol. The effects of various reaction parameters like reaction temperature, pressure and amount of catalyst were investigated, and the activities of five different kinds of Mo modified skeletal catalysts were compared. The results show that glucose in equivalent amount of water can be 100% converted with more than 99% selectivity to sorbitol at 135 ℃and 4.0 MPa pressure by the amorphous NiMoA1 alloy catalyst. The catalyst can be repeatedly used for five times, indicating excellent stability.