Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (3): 302-309.DOI: 10.1016/S1872-2067(12)60733-5

• Articles • Previous Articles     Next Articles

Effect of calcination temperature of Ni/SiO2-ZrO2 catalyst on its hydrodeoxygenation of guaiacol

Xinghua Zhang, Qi Zhang, Lungang Chen, Ying Xu, Tiejun Wang, Longlong Ma   

  1. Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China
  • Received:2013-07-29 Revised:2013-10-15 Online:2014-02-26 Published:2014-02-26
  • Supported by:

    This work was supported by the International S&T Cooperation Program of China (2012DFA61080, 246772) and the National Natural Science Foundation of China (51106167).

Abstract:

SiO2-ZrO2 composites were synthesized by chemical precipitation and used to prepare a series of bifunctional Ni/SiO2-ZrO2 catalysts by impregnation. The effect of calcination temperature on the catalyst structure and its catalysis of the hydrodeoxygenation of guaiacol was investigated. Guaiacol was converted to cyclohexane by a synergism between the metal center and solid acid support. The catalyst calcined at 500℃ gave a maximum 100% guaiacol conversion and 96.8% selectivity for cyclohexane. The catalyst samples were characterized by N2 adsorption, H2 chemisorption, X-ray diffraction, H2 temperature-programmed reduction, NH3 temperature-programmed desorption, and Raman spectroscopy. The synthesized SiO2-ZrO2 was an amorphous oxide. The Ni/SiO2-ZrO2 catalyst calcined at 500℃ has more acidity, smaller NiO particles, and larger BET surface area and pore volume, which gave it the best catalytic performance.

Key words: Nickel, Silica, Zirconia, Calcination temperature, Guaiacol, Hydrodeoxygenation, Cyclohexane