Chinese Journal of Catalysis ›› 2016, Vol. 37 ›› Issue (2): 234-239.DOI: 10.1016/S1872-2067(15)60997-4

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Selective hydrogenation of phenol to cyclohexanone in water over Pd catalysts supported on Amberlyst-45

Mengsi Zhao, Juanjuan Shi, Zhaoyin Hou   

  1. Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, Zhejiang, China
  • Received:2015-09-03 Revised:2015-09-29 Online:2016-01-30 Published:2016-01-31
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21473155, 21273198, 21073159) and the Natural Science Foundation of Zhejiang Province (LZ12B03001).

Abstract:

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 of 12-14 nm on Amberlyst-45 gave better selectivity and stability.

Key words: Phenol, Hydrogenation, Cyclohexanone, Palladium, Amberlyst-45 resin, Supported catalyst