Physicochemical pretreatments and hydrolysis of furfural residues via carbon-based sulfonated solid acid.
Physicochemical pretreatments and hydrolysis of furfural residues via carbon-based sulfonated solid acid.
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DOI：
10.1016/j.biortech.2014.01.059
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发表时间：
2014-03
影响因子：
11.4
通讯作者：
B. Ma;Yuan Sun;Keying Lin;Bing Li;Wanyi Liu
中科院分区：
文献类型：
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作者：
B. Ma;Yuan Sun;Keying Lin;Bing Li;Wanyi Liu
采用NaOH/微波和NaOH/超声波两种物理化学预处理方法制备了碳基磺化固体酸催化剂，并将其用于糠醛渣转化为还原糖。两种最佳预处理后，糠醛渣中纤维素的含量分别提高了74.03%、72.28%，半纤维素和木质素的含量分别降低了94.11%、94.17%和91.75%、92.09%。糠醛渣经煤焦油基固体酸两种物化预处理后，还原糖得率分别达到33.94%和33.13%，高于单纯NaOH预处理的27%，与NaOH/H2 O2预处理的35.67%相当。XRD图谱、IR图谱和SEM图谱表明微波和超声波均能提高预处理效果。结果表明，碳基磺化固体酸和物化预处理是一种绿色、高效、低成本的糠醛渣转化方法。
Potential commercial physicochemical pretreatment methods, NaOH/microwave and NaOH/ultrasound were developed, and the carbon-based sulfonated solid acid catalysts were prepared for furfural residues conversion into reducing sugars. After the two optimum pretreatments, both the content of cellulose increased (74.03%, 72.28%, respectively) and the content of hemicellulose (94.11%, 94.17% of removal rate, respectively) and lignin (91.75%, 92.09% of removal rate, respectively) decreased in furfural residues. The reducing sugar yields of furfural residues with the two physicochemical pretreatments on coal tar-based solid acid reached 33.94% and 33.13%, respectively, higher than that pretreated via NaOH alone (27%) and comparable to that pretreated via NaOH/H2O2(35.67%). The XRD patterns, IR spectra and SEM images show microwave and ultrasound improve the pretreatment effect. The results demonstrate the carbon-based sulfonated solid acids and the physicochemical pretreatments are green, effective, low-cost for furfural residues conversion.