Journal
RSC ADVANCES
Volume 2, Issue 17, Pages 6921-6925Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ra21022c
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Funding
- Natural Science Foundation of China and Shandong Province [21003146, 20803038, ZR2010BQ014, O92003110C]
- Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-EW-J-10]
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Concentrated H3PW12O40 (HPW) was first employed to decompose cellulose under microwave irradiation at low temperatures. 75.6% yield of glucose was obtained at 90 degrees C under microwave irradiation for 3 h, which was considerably high under such mild conditions using phosphotungstic acid as a catalyst. With the same effective acid concentration, HPW gave the highest cellulose conversion and glucose yield among the Bronsted acid catalysts, indicating that the strong Bronsted acid played an important role during cellulose hydrolysis. In the hydrolysis of cellulose with HPW as catalysts, microwave irradiation led to higher glucose yields than the conventional heating method. The recovery and reusability of HPW were investigated by extraction with diethyl ether from the reaction solution. At the same time, the performance of the concentrated HPW for real lignocellulosic biomass (corncob, corn stover and bagasse) hydrolysis was also investigated.
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