期刊
BIORESOURCE TECHNOLOGY
卷 270, 期 -, 页码 166-171出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.09.037
关键词
Mesocarbon microbeads; Solid acid catalyst; Recyclability; Cellulose hydrolysis; Total reducing sugar
资金
- National Natural Science Foundation of China NSFC [51174144]
- Key Research and Development Program of Shanxi Province [201703D12111437]
Mesocarbon microbeads (MCMB) from coal tar pitch have excellent mechanical strength, high density, and good thermal stability. Moreover, a great deal of aromatic constituents occur on its surface, favoring the substitution reaction of sulfonic group. Results showed that the total acid and -SO3H amount was 4.36 mmol/g and 2.18 mmol/g, respectively. Moreover, the yield of total reducing sugar (TRS) and conversion ratio (Cr) for pretreated cellulose (DP=101.5) can reach 66.7% and 68.8% at 140 degrees C for 240 min in distilled water, respectively. After four recycles, the TRS and Cr decreased by 12.6% and 10.2%, respectively. Through the secondary and third regeneration for the catalyst, acid density still reached 88.1% and 87.2% of the initial R-1-MCMB-SO3H, demonstrating excellent regeneration ability and recyclability of the solid acid. Therefore, MCMB-based solid acid exhibits an attractive potential in the conversion of cellulose into platform chemical compounds.
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