Chinese Journal of Catalysis ›› 2011, Vol. 32 ›› Issue (10): 1645-1650.DOI: 10.3724/SP.J.1088.2011.10639

• Research papers • Previous Articles     Next Articles

Preparation and Hydrodeoxygenation Properties of Ni-Co-W-B Amorphous Catalyst

WANG Weiyan, YANG Yunquan*, LUO Hean, PENG Huizuo, ZHANG Xiaozhe, HU Tao   

  1. School of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
  • Received:2011-06-30 Revised:2011-07-31 Online:2011-09-30 Published:2015-02-12

Abstract: Ni-Co-W-B amorphous catalysts with different Ni/Co ratios were prepared by the chemical reduction method, and their hydrodeoxygenation (HDO) activity was tested using phenol as the model compound. All the fresh catalysts showed an amorphous structure, and the electron transfer between Ni0 and B0 occurred in the Ni-Co-W-B amorphous catalysts. The thermal stability of the amorphous catalyst increased and the Ni0 content decreased with increasing Co content. The HDO of phenol on the Ni-Co-W-B amorphous catalysts proceeded through a hydrogenation-deoxygenation route, and no benzene was found in the products. When the Ni:Co atom ratio in the raw material was 2:1, the Ni-Co-W-B amorphous catalyst showed the highest HDO activity. Under the conditions of temperature 275 oC, hydrogen pressure 4.0 MPa, and reaction time 2 h, the phenol conversion and the deoxygenation rate reached 99.4% and 86.0%, respectively. The HDO activity of the Ni-Co-W-B amorphous catalysts depended on the Ni0 content, the Brönsted acidity, and the catalyst surface area.

Key words: amorphous catalyst, phenol, hydrodeoxygenation, benzene, bio-oil, clean fuel