Damaged starch derived carbon foam-supported heteropolyacid for catalytic conversion of cellulose: Improved catalytic performance and efficient reusability.
Damaged starch derived carbon foam-supported heteropolyacid for catalytic conversion of cellulose: Improved catalytic performance and efficient reusability.
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DOI：
10.1016/j.biortech.2019.121532
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发表时间：
2019-09
影响因子：
11.4
通讯作者：
Yanjuan Zhang;Mengyao Zhao;Huan Wang;Huayu Hu;Rong Liu;Zuqiang Huang;Congjin Chen;Dong Chen
中科院分区：
文献类型：
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作者：
Yanjuan Zhang;Mengyao Zhao;Huan Wang;Huayu Hu;Rong Liu;Zuqiang Huang;Congjin Chen;Dong Chen
为了开发一种稳定性和重复使用性好的纤维素催化转化为平台化合物的多相催化剂，以泡沫炭（CF）为载体负载磷钨酸（HPW）制备了CF负载HPW（HPW/CF）催化剂。以机械活化（MA）破坏淀粉、麸质蛋白和酵母为原料，通过面包（CF前体）碳化制备三维CF。CF 30（30重量%的面筋蛋白）表现出良好的机械强度、相对高的比表面积和所需的分级多孔结构。将HPW接枝到CF 30上制备HPW/CF 30催化剂，该催化剂能有效催化纤维素水解生成葡萄糖，尤其适用于MA预处理的小颗粒无定形纤维素的水解。甲基丙烯酸预处理纤维素的自由羟基与CF 30的含氧基团之间的亲和力增强了HPW/CF 30的催化效率。此外，HPW/CF 30催化剂具有良好的重复使用性，易于从反应体系中分离回收。
To develop an efficient heterogeneous catalyst with good stability and reusability for catalytic conversion of cellulose to platform compounds, carbon foam (CF) was used to immobilize phosphotungstic acid (HPW) to prepare CF-supported HPW (HPW/CF) catalyst. Three-dimensional CF was prepared by carbonization of bread (precursor of CF) with mechanical activation (MA)-damaged starch, gluten protein, and yeast as materials. CF30 (30 wt% of gluten protein) exhibited good mechanical strength, relatively high specific surface area, and desired hierarchical porous structure. HPW was successfully anchored onto CF30 by grafting to prepare HPW/CF30 catalyst, which could effectively catalyze the hydrolysis of cellulose to produce glucose, especially for the hydrolysis of MA-pretreated cellulose with small granules and amorphous structure. The affinity between free hydroxyl groups of MA-pretreated cellulose and oxygen-containing groups of CF30 enhanced the catalytic efficiency of HPW/CF30. In addition, HPW/CF30 catalyst exhibited good reusability and was easily separated from reaction system for recycling.