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Citation: Xicheng Wang, Xiaoran Liu, Yue Xu, Gongming Peng, Quan Cao, Xindong Mu. Sorbitol hydrogenolysis to glycerol and glycols over M-MgO (M=Ni, Co, Cu) nanocomposite: A comparative study of active metals[J]. Chinese Journal of Catalysis, ;2015, 36(9): 1614-1622. doi: 10.1016/S1872-2067(15)60928-7 shu

Sorbitol hydrogenolysis to glycerol and glycols over M-MgO (M=Ni, Co, Cu) nanocomposite: A comparative study of active metals

Xicheng Wang ^a ,
Xiaoran Liu ^a,b ,
Yue Xu ^c ,
Gongming Peng ^a ,
Quan Cao ^a ,
Xindong Mu ^a,,

1.
a Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China;

Corresponding author: Xindong Mu,
Received Date: 1 April 2015
Available Online: 5 June 2015
Fund Project: 国家自然科学基金(21273260, 21433001) (21273260, 21433001) 山东省自然科学杰出青年基金(JQ201305) (JQ201305)

The activities and selectivities of MgO-supported Ni, Cu, and Co catalysts have been compared in aqueous-phase hydrogenolysis of sorbitol to glycerol and glycols. All catalysts effectively catalyzed the sorbitol conversion into C2 and C3 polyols like glycerol, 1,2-propylene glycol, and ethylene glycol, but with different product distributions. The differences in activities and selectivities are ascribed to their different dehydrogenation/hydrogenation activities. The influences of base promoter, temperature, H₂ pressure, and reaction time were also studied. Added base promoter and prolonged reaction time enhanced sorbitol conversion for the three catalysts, but led to product degradation and decreased selectivity over Ni-MgO and Co-MgO, whereas selectivity maintained almost unchanged over Cu-MgO.
- Biomass,
- Hydrogenolysis,
- Sorbitol,
- Magnesia,
- Supported metal catalyst,
- Bifunctional catalyst
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