Composite coal fly ash solid acid catalyst in synergy with chloride for biphasic preparation of furfural from corn stover hydrolysate.

Autor: Gong L; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China., Xu ZY; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China., Dong JJ; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China., Li H; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China., Han RZ; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China., Xu GC; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China., Ni Y; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China. Electronic address: yni@jiangnan.edu.cn.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2019 Dec; Vol. 293, pp. 122065. Date of Electronic Publication: 2019 Aug 26.
DOI: 10.1016/j.biortech.2019.122065
Abstrakt: A solid acid catalyst SO 4 2- /SnO 2 -Al 2 O 3 -CFA was synthesized based on industrial waste coal fly ash (CFA) as carrier and applied in the conversion of oxalic acid pretreated corn stover hydrolysate to produce furfural. Physical properties of the solid acid catalyst were characterized by SEM, FTIR, XRD, BET, EDAX, and NH 3 -TPD. Highly wrinkled structure of SO 4 2- /SnO 2 -Al 2 O 3 -CFA could provide more specific surface area for the covalent linkage between SiO 2 and SnO 2 . Factors influencing the efficacy of SO 4 2- /SnO 2 -Al 2 O 3 -CFA were systematically explored. The highest furfural yield of 84.7% was reached in NH 4 Cl-toluene biphasic system at 180 °C for 30 min. The recyclability of SO 4 2- /SnO 2 -Al 2 O 3 -CFA and toluene could be achieved for five batches with stable performance in transformation of xylose-rich corn stover hydrolysate. This study provided a novel solid acid catalyst with promising potential in the synthesis of furfural from corn stover.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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