期刊
BIORESOURCES AND BIOPROCESSING
卷 8, 期 1, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1186/s40643-021-00466-3
关键词
Furans; Sn-GP; Biomass; Co-catalysis; Chemoenzymatic catalysis
资金
- NSFC (National Natural Science Foundation of China) [21978072]
In this study, a heterogeneous tin-based sulfonated graphite (Sn-GP) catalyst was prepared using graphite as the carrier. By utilizing organic acids with different pKa values as assistants, a linear equation was established for furfural synthesis. Co-catalysis of CC with maleic acid and Sn-GP yielded the highest furfural yield, showcasing an efficient valorization of renewable biomass.
Heterogeneous tin-based sulfonated graphite (Sn-GP) catalyst was prepared with graphite as carrier. The physicochemical properties of Sn-GP were captured by FT-IR, XRD, SEM and BET. Organic acids with different pKa values were used to assist Sn-GP for transforming corncob (CC), and a linear equation (Furfural yield = -7.563 x pKa + 64.383) (R-2 = 0.9348) was fitted in acidic condition. Using sugarcane bagasse, reed leaf, chestnut shell, sunflower stalk and CC as feedstocks, co-catalysis of CC (75.0 g/L) with maleic acid (pKa = 1.92) (0.5 wt%) and Sn-GP (3.6 wt%) yielded the highest furfural yield (47.3%) for 0.5 h at 170 degrees C. An effective furfural synthesis was conducted via co-catalysis with Sn-GP and maleic acid. Subsequently, E. coli CG-19 and TS completely catalyzed the conversion of corncob-derived FAL to furfurylalcohol and furoic acid, respectively. Valorisation of available renewable biomass to furans was successfully developed in tandem chemoenzymatic reaction.
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