利用水热合成法制备出具有不同直径且表面富含羟基的球形碳基催化助剂,并在水相体系中详细探讨了催化助剂尺寸对纤维素水解成糖效率的影响。结果表明:球形碳基催化助剂在直径400～1000nm的范围内对促进纤维素水解成糖响应均具有良好的作用能力,展现出较高的水解成糖效率。仅随纤维素颗粒尺寸的增加,在一定程度上纤维素的水解成糖效率有所降低。在全水相低酸体系中,最优的水解条件下,纤维素转化率可超过95%、水解成糖效率高达73%～74%。
Spherical carbon-based catalytic additives with different diameter and hydroxyl-rich surface were prepared by hydrothermal synthesis.The effect of the size of carbon-based catalytic additives on the efficiency of cellulose hydrolysis to sugar in the aqueous system was discussed in detail.The results showed that the spherical carbon-based catalytic additives with the diameter in the range of 400～1000nm had a good capability to promote the hydrolysis of cellulose to sugar,exhibiting a high efficiency of hydrolysis to sugar.With the increase of the particle size of cellulose,the efficiency of cellulose hydrolysis to sugar decreased to a certain extent.In aqueous phase low acid system,under the optimal hydrolysis conditions,the cellulose conversion could exceed 95%,and the efficiency of hydrolysis to sugar was as high as 73%～74%.
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基金资助
国家自然科学基金(21978310);宁波市公益类科技计划重点项目(2021S020);中国科学院科技服务网络计划区域重点项目(KFJ-STS-QYZD-2021-16-002);中国科学院青年创新促进会会员项目(2017339)
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