基于金属-有机骨架材料（MOF）制备了一类新型双金属碳化物催化剂。将磷钨酸（PTA）包覆在铁-MOF中，通过惰性气氛高温焙烧得到了双金属碳化物，并研究了其催化加氢性能。其中，900℃高温焙烧得到的Fe₆W₆C晶体在加氢反应中起到了关键的作用。PTA@MOF-900表现出很高的硝基芳烃和苯乙炔的加氢活性（>86%），且其加氢选择性接近100%，对于不同反应底物均具有较好的普适性。该催化剂循环使用5次，催化活性仍能维持在70%左右。

A novel kind of bimetal carbide catalyst is fabricated on the base of metal-organic framework (MOF) materials.Phosphotungstic acid (PTA) is clad by Fe-MOF,and is then calcined at high temperature inert atmosphere to form bimetal carbide.The catalytic hydrogenation performance of the prepared bimetal carbide is studied.In which,the Fe₆W₆C crystal obtained at high-temperature (900℃) calcination plays a key role in the hydrogenation reaction of nitro-aromatics.Importantly,PTA@MOF-900 exhibits very high activity (>86%) nearly 100% hydrogenation selectivity in hydrogenation of nitro-aromatics and phenylacetylene,and is well suitable for different reaction substrates.The catalytic activity of this catalyst can maintain 70% after 5 times of circle uses.

裴慧霞(1980-),女,硕士,工程师,研究方向为煤化工,peihuixia145@163.com