Microwave-assisted hydrolysis of crystalline cellulose catalyzed by biomass char sulfonic acids
Microwave-assisted hydrolysis of crystalline cellulose catalyzed by biomass char sulfonic acids
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生物质焦磺酸催化结晶纤维素微波辅助水解
DOI：
10.1039/b917807d
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发表时间：
2010-04
期刊：
影响因子：
9.8
通讯作者：
Mao, Liqiu
中科院分区：
文献类型：
--
作者：
Fu, Zaihui;Lu, Chunli;Liu, Fenglan;Xu, Qiong;Yin, Dulin;Wu, Youyu;Mao, Liqiu
开发一种环境友好的纤维素水解制还原糖的工艺可能是未来充分利用纤维素生物质的关键技术之一。在微波辐射下，实现了生物质焦磺酸(BC-SO3H)催化的纤维素在水中的水解。以天然竹子、棉花和淀粉为原料制备的BC-SO3H催化剂的转化率(TON)远高于稀硫酸溶液(TON，0.02)，这可能是因为它们对纤维素的β-1，4-糖苷键有很强的亲和力。此外，微波辐射在活化纤维素分子和加强颗粒碰撞方面起着关键作用，对这一多相催化过程有显著的加速作用。
The development of an environmentally benign process for the hydrolysis of cellulose into reducing sugars can be one of the key technologies for making full use of cellulosic biomass in the future. Here, a biomass char sulfonic acid (BC-SO3H)-catalyzed hydrolysis of cellulose in water was achieved under microwave irradiation. The BC-SO3H catalysts prepared cheaply from natural bamboo, cotton and starch, showed a much higher turnover number (TON, 1.33-1.73) for this reaction compared to a dilute H2SO4 solution (TON, 0.02), which was likely due to their strong affinity to β-1,4-glycosidic bonds of cellulose. In addition, microwave irradiation played key roles in activating cellulose molecules and strengthening particle collision, which can lead to a remarkable acceleration effect on this heterogeneously catalytic process.
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