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

被引：64

作者：

Gong, Lei ^{[1
]}

Xu, Zi-Yan ^{[1
]}

Dong, Jin-Jun ^{[1
]}

Li, Hao ^{[1
]}

Han, Rui-Zhi ^{[1
]}

Xu, Guo-Chao ^{[1
]}

Ni, Ye ^{[1
]}

机构：

[1] Jiangnan Univ, Sch Biotechnol, Minist Educ, Key Lab Ind Biotechnol, Wuxi 214122, Jiangsu, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 293卷

基金：

中国国家自然科学基金;

关键词：

Corn stover hydrolysate; Furfural; Solid acid catalyst; Chloride salt; Biphasic system; TIN OXIDE CATALYST; XYLOSE; DEHYDRATION; CONVERSION; BIOMASS; ESTERIFICATION; HEMICELLULOSE; WATER; PRETREATMENT; RESIDUES;

D O I：

10.1016/j.biortech.2019.122065

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A solid acid catalyst SO42-/SnO2-Al2O3-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 NH3-TPD. Highly wrinkled structure of SO42-/SnO2-Al2O3-CFA could provide more specific surface area for the covalent linkage between SiO2 and SnO2. Factors influencing the efficacy of SO42-/SnO2-Al2O3-CFA were systematically explored. The highest furfural yield of 84.7% was reached in NH4Cl-toluene biphasic system at 180 degrees C for 30 min. The recyclability of SO42-/SnO2-Al2O3-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.

引用

页数：7

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