A series of Pd catalysts were prepared on different supports(Fe2O3,SiO2,ZnO,MgO,Al2O3,carbon,and Amberlyst-45) and used in the selective hydrogenation of phenol to cyclohexanone in water.The Amberlyst-45 supported P...A series of Pd catalysts were prepared on different supports(Fe2O3,SiO2,ZnO,MgO,Al2O3,carbon,and Amberlyst-45) and used in the selective hydrogenation of phenol to cyclohexanone in water.The Amberlyst-45 supported Pd catalyst(Pd/A-45) was highly active and selective under mild conditions(40-100 ℃,0.2-1 MPa),giving a selectivity of cyclohexanone higher than 89%even at complete conversion of phenol.Experiments with different Pd loadings(or different particle sizes) confirmed that the formation of cyclohexanone was a structure sensitive reaction,and Pd particles of12-14 nm on Amberlyst-45 gave better selectivity and stability.展开更多
基金supported by the National Natural Science Foundation of China(21473155,21273198,21073159)the Natural Science Foundation of Zhejiang Province(LZ12B03001)~~
文摘A series of Pd catalysts were prepared on different supports(Fe2O3,SiO2,ZnO,MgO,Al2O3,carbon,and Amberlyst-45) and used in the selective hydrogenation of phenol to cyclohexanone in water.The Amberlyst-45 supported Pd catalyst(Pd/A-45) was highly active and selective under mild conditions(40-100 ℃,0.2-1 MPa),giving a selectivity of cyclohexanone higher than 89%even at complete conversion of phenol.Experiments with different Pd loadings(or different particle sizes) confirmed that the formation of cyclohexanone was a structure sensitive reaction,and Pd particles of12-14 nm on Amberlyst-45 gave better selectivity and stability.