新型钌催化剂用于葡萄糖加氢反应

Novel Ruthenium Catalyst for Glucose Hydrogenation

通过超声波辅助浸渍法将Ru3+负载于膨胀石墨载体上;以六次甲基四胺(HMT)为配合剂制备RuCl3-HMT配合物并进行相应的负载,再经KBH4还原制备了新型钌催化剂.采用XRD、ICP-AES、HRTEM等表征方法考察了所制的钌催化剂和RuCl3-HMT配合物的结构形貌和物理性质.结果表明,加入HMT的钌催化剂活性组分粒径更小,分散度更高,从而提高了催化剂的催化活性.在液相葡萄糖加氢制山梨醇反应中,该催化剂显示了高的加氢催化性能.

A new typical ruthenium catalyst was prepared by ultrasonic impregnation of expanded graphite support with Ru^3＋ solution adding HMT as a ligand followed by chemical reduction with KBH4 solution. The structure and the properties of catalyst and RuCl3-HMT complex were characterized by means of XRD, ICP-AES, HRTEM, respectively. The results showed the catalyst had smaller particles and higher dispersion on the expanded graphite support. During glucose hydrogenation in liquid phase, the catalyst exhibited dramatically higher activity than raditional ruthenium catalyst just by chemical reduction with KBH4.