Highly selective and stable hydrogenation of heavy aromatic-naphthalene over transition metal phosphides  

作　　者：Muhammad Usman Dan Li Chunshan Li Suojiang Zhang 

机构地区：[1]Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering, University of Chinese Academy of Sciences

出　　处：《Science China Chemistry》2015年第4期738-746,共9页中国科学（化学英文版）

基　　金：financial support from the Special Funds of the National Natural Science Foundation of China(21127011);National High Technology Research and Development Program of China(2011AA050606);National Natural Science Foundation of China(Petrochemical Joint Fund,U1162106)

摘　　要：The present study reports a highly selective and stable catalytic approach for producing tetralin, an important chemical, solvent, and H2 storage material. Transition metal phosphides （MOP, Ni2P, Co2P, and Fe2P） were prepared by wet impregnation and temperature-programmed reduction and characterized by X-ray diffraction （XRD）, energy dispersive X-ray spectroscopy （EDX）, EDX mapping, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, brunauer-emmett- teller （BET）, temperature-programmed desorption of ammonia （NH3-TPD）, and fourier transform infrared spectroscopy of pyridine （pyridine-FTIR）. Of all the transition metal phosphides MoP was formed at a lower reduction temperature, which resuited in smaller particle size that enhanced the overall surface area of the catalyst. The existence of weak, moderate, and Lewis acidic sites over MoP were responsible for its high tetralin selectivity （90%） and stability during the 100 h reaction on-stream in a fixed-bed reactor.The present study reports a highly selective and stable catalytic approach for producing tetralin, an important chemical, solvent, and H2 storage material. Transition metal phosphides(Mo P, Ni2 P, Co2 P, and Fe2P) were prepared by wet impregnation and temperature-programmed reduction and characterized by X-ray diffraction(XRD), energy dispersive X-ray spectroscopy(EDX), EDX mapping, scanning electron microscopy(SEM), transmission electron microscopy(TEM), brunauer-emmettteller(BET), temperature-programmed desorption of ammonia(NH3-TPD), and fourier transform infrared spectroscopy of pyridine(pyridine-FTIR). Of all the transition metal phosphides Mo P was formed at a lower reduction temperature, which resulted in smaller particle size that enhanced the overall surface area of the catalyst. The existence of weak, moderate, and Lewis acidic sites over Mo P were responsible for its high tetralin selectivity(90%) and stability during the 100 h reaction on-stream in a fixed-bed reactor.

关 键 词：coal tar NAPHTHALENE transition metal phosphides selective hydrogenation TETRALIN 

分 类 号：O625.151[理学—有机化学]