Citation: Jia Wang, Nian Lei, Chaojun Yang, Yang Su, Xiaochen Zhao, Aiqin Wang. Effect of promoters on the selective hydrogenolysis of glycerol over Pt/W-containing catalysts[J]. Chinese Journal of Catalysis, ;2016, 37(9): 1513-1520. doi: 10.1016/S1872-2067(16)62479-8 shu

Effect of promoters on the selective hydrogenolysis of glycerol over Pt/W-containing catalysts

Jia Wang ^a,b, ,
Nian Lei ^a,b ,
Chaojun Yang ^a,b ,
Yang Su ^a ,
Xiaochen Zhao ^a ,
Aiqin Wang ^a

a. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
b. University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 5 April 2016
Revised Date: 27 May 2016

Fund Project: This work was supported by the National Natural Science Foundation of China(21176235, 21373206, 21303187).

Diverse promoters, including noble metals(such as Ru, Ir and Rh) and transition metal oxides(such as Re, La, Fe, Zr, Sn and Ce oxides) were introduced into Pt/WO_x and Pt/WO_x/Al₂O₃ catalysts to investigate the ability of these promoters to modify activity and selectivity during glycerol hydrogenolysis to 1,3-propanediol. Among these, La exhibited the greatest promotional effect; the introduction of 0.1% La to the Pt/WO_x improved activity, selectivity and stability, although the significant increase in selectivity came at the cost of a slight activity loss in the case of the Pt/WO_x/Al₂O₃ catalyst. Transmission electron microscopy, high angle annular dark field scanning tunneling electron microscopy and NH₃-temperature programmed desorption all demonstrated that the introduction of La generates a greater quantity of acidic sites on the catalyst surface, and that the majority of the La species are associated with Pt particles. Most of the other additives resulted in only minimal improvements or even detrimental effects with regard to both activity and selectivity, although some appear to improve the stability of the catalyst.
- Glycerol,
- Hydrogenolysis,
- 1,3-propanediol,
- Tungsten oxide,
- Promoter
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