Chinese Journal of Catalysis ›› 2013, Vol. 34 ›› Issue (5): 1013-1019.DOI: 10.1016/S1872-2067(12)60534-8

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Preparation and application of highly efficient Au/SnO2 catalyst in the oxidative lactonization of 1,4-butanediol to γ-butyrolactone

LI Xiana, ZHENG Jiamina, YANG Xinlib, DAI Weilina, FAN Kangniana   

  1. a Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, China;
    b College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
  • Received:2012-11-26 Revised:2013-05-20 Online:2013-05-06 Published:2013-05-06

Abstract:

A series of gold catalysts supported on commercial SnO2 were synthesized by deposition-precipitation while accurately controlling pH and precipitant species. The supported catalysts were characterized by X-ray diffraction, inductively coupled plasma atomic emission spectrometry, transmission electron microscopy, and X-ray photoelectron spectroscopy. Gold loading and calcination temperature both affected the dispersion and nature of gold species on SnO2. The performance of the catalysts in the oxidative lactonization of 1,4-butanediol to g-butyrolactone was investigated. The catalyst with 3% gold that was calcined at 573 K exhibited the highest activity, which was 15 times higher than that of Au/TiO2. The excellent catalytic performance was attributed to the high dispersion of gold particles and adequate Au0 and Auδ- species formed because of the strong interaction between Au and SnO2 and the intrinsic properties of SnO2.

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Key words: Gold catalyst, Tin dioxide, Deposition-precipitation method, 1,4-Butanediol, Oxidative lactonization, Calcination temperature, Gold loading