Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (4): 729-737.doi: 10.3866/PKU.WHXB201501292

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Catalytic Performance of PdAu/Al2O3 Catalyst with Special Structural and Electronic Properties in the 2-Ethylanthraquinone Hydrogenation Reaction

HAN You, HE Zhi-Yuan, GUAN Yong-Chuan, LI Wei, ZHANG Jin-Li   

  1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
  • Received:2014-11-26 Revised:2015-01-28 Published:2015-04-03
  • Contact: ZHANG Jin-Li E-mail:zhangjinli@tju.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (21106094, 21276179), National Key Basic Research Program of China (973) (2012CB720300), and Program for Changjiang Scholars, Innovative Research Team in University, China (IRT1161).

Abstract:

A series of bimetallic PdAu catalysts with different structures were prepared by changing the loading sequence of Pd and Au for the hydrogenation of 2-ethylanthraquinone. Pd/Au/Al2O3 was obtained by loading Pd onto Au particles deposited onto an Al2O3 support with a hydrogenation efficiency up to 14.27 g·L-1. According to X-ray diffraction, transmission electron microscopy, hydrogen temperature program reduction, and X-ray photoelectron spectroscopy measurements, the popcorn structure and unique electronic properties of the Pd species in the Pd/Au/Al2O3 catalyst resulted in the highest content of surface metallic Pd, which was the most active component for the reaction. What is more, the addition of Au can effectively reduce the amount of degradation products by suppressing side reactions.

Key words: Loading sequence, Bimetallic PdAu, Anthraquinone hydrogenation, Degradation product

MSC2000: 

  • O643