期刊
CHEMSUSCHEM
卷 12, 期 17, 页码 3977-3987出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201901110
关键词
biomass; cellulose; ethanol; H3PO4; nickel
资金
- National Natural Science Foundation of China [51536009, 51576199]
- Natural Science Foundation of Guangdong Province [2017A030308010]
- DNL Cooperation Fund, CAS [DNL180302]
- National Key R&D Program of China [2018YFB1501402, 2017YFE0106600]
- Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BT01N092]
Ethanol is an important bulk chemical with diverse applications. Biomass-derived ethanol is traditionally produced by fermentation. Direct cellulose conversion to ethanol by chemocatalysis is particularly promising but remains a great challenge. Herein, a one-pot hydrogenolysis of cellulose into ethanol was developed by using graphene-layers-encapsulated nickel (Ni@C) catalysts with the aid of H3PO4 in water. The cellulose was hydrolyzed into glucose, which was activated by forming cyclic di-ester bonds between the OH groups of H3PO4 and glucose, promoting ethanol formation under the synergistic hydrogenation of Ni@C. A 69.1 % yield of ethanol (carbon mole basis) was obtained, which is comparable to the theoretical value achieved by glucose fermentation. An ethanol concentration of up to 8.9 wt % was obtained at an increased cellulose concentration. This work demonstrates a chemocatalytic approach for the high-yield production of ethanol from renewable cellulosic biomass at high concentration.
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