Selective hydrogenation of nitroarenes is an important chemical transformation to obtain functionalized anilines as key intermediates for pharmaceuticals and fine chemicals.Compared to the well-studied noble metal cat...Selective hydrogenation of nitroarenes is an important chemical transformation to obtain functionalized anilines as key intermediates for pharmaceuticals and fine chemicals.Compared to the well-studied noble metal catalysts,heterogeneous catalysts based on low-cost transition metals are rarely reported.In this study,we developed an efficient and controllable route to synthesize a new kind of heterogeneous catalyst of iron phosphide nanoparticles encapsulated in a doped carbon matrix for the chemoselective hydrogenation of aromatic nitroarenes to anilines.Making use of the chemical reaction between Fe atoms in a MIL-88B-NH_(2) core and phosphorus atoms in a poly(cyclotriphosphazene-co-4,4′-sulfonyldiphenol)(PZS)shell,iron phosphide nanoparticles encapsulated in a doped carbon matrix were successfully prepared through direct calcinations of a Fe-MOF@PZS core@shell precursor at 900℃for 2 h under an Ar atmosphere.Due to the relative high surface area and porous structure as well as small nanoparticles,the prepared catalyst showed high catalytic activity,excellent selectivity and recyclability for the hydrogenation of aromatic nitroarenes to anilines.展开更多
基金National Natural Science Foundation of China(NSFC 21333009,21573245,and 21573244)the Chinese Academy of Sciences-Peking University Pioneer Cooperation Team and the Youth Innovation Promotion Association of CAS(2017049).
文摘Selective hydrogenation of nitroarenes is an important chemical transformation to obtain functionalized anilines as key intermediates for pharmaceuticals and fine chemicals.Compared to the well-studied noble metal catalysts,heterogeneous catalysts based on low-cost transition metals are rarely reported.In this study,we developed an efficient and controllable route to synthesize a new kind of heterogeneous catalyst of iron phosphide nanoparticles encapsulated in a doped carbon matrix for the chemoselective hydrogenation of aromatic nitroarenes to anilines.Making use of the chemical reaction between Fe atoms in a MIL-88B-NH_(2) core and phosphorus atoms in a poly(cyclotriphosphazene-co-4,4′-sulfonyldiphenol)(PZS)shell,iron phosphide nanoparticles encapsulated in a doped carbon matrix were successfully prepared through direct calcinations of a Fe-MOF@PZS core@shell precursor at 900℃for 2 h under an Ar atmosphere.Due to the relative high surface area and porous structure as well as small nanoparticles,the prepared catalyst showed high catalytic activity,excellent selectivity and recyclability for the hydrogenation of aromatic nitroarenes to anilines.
