One-Pot Transformation of Cellulose to Sugar Alcohols over Acidic Metal Phosphates Combined with Ru/C
One-Pot Transformation of Cellulose to Sugar Alcohols over Acidic Metal Phosphates Combined with Ru/C
复制标题
酸性金属磷酸盐与 Ru/C 结合一锅法将纤维素转化为糖醇
DOI：
10.1021/ie5016238
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发表时间：
2014-08-13
影响因子：
4.2
通讯作者：
Ma, Long-Long
中科院分区：
文献类型：
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作者：
Liu, Qi-Ying;Liao, Yu-He;Ma, Long-Long
制备了具有大比表面积、介孔体积和尺寸的ZrP。以纤维素水解加氢制山梨醇/甘露醇为反应体系，考察了Ru/C催化剂的催化性能。与水溶性酸性磷酸盐和邻苯二甲酸氢钾缓冲溶液结合相同的Ru/C相比，山梨醇/甘露醇的产率得到显著提高。提高的产率归因于ZrP表面的刘易斯酸和布朗斯台德酸改善了表面对纤维素的吸附和活化，加速了速率决定的水解步骤。以微晶纤维素和球磨纤维素为原料，山梨醇/甘露醇的最大产率分别为63%和81%。ZrP与Ru/C组合适用于高浓度纤维素，并获得5.8wt%的山梨醇/甘露醇浓度。ZrP对纤维素水解的显著增强大大减少了Ru/C的使用，这对于基本应用是重要的。
ZrP with large surface, mesoporous volume, and size was prepared. Its catalytic performance was evaluated in hydrolytic hydrogenation of cellulose to sorbitol/mannitol combined with commercial Ru/C. A significantly enhanced sorbitol/mannitol yield was obtained as compared with that of the water-soluble acidic phosphates and buffer solution of potassium acid phthalate combined with the same Ru/C. The enhanced yield was attributed to the Lewis and Bronsted acid on ZrP surface improving the surface’s absorption and activation for cellulose and accelerating the rate-determined hydrolysis step. The maximal sorbitol/mannitol yield of 63% and 81% could be obtained by using microcrystalline and ball milling cellulose as the feedstock, respectively. The ZrP combined with Ru/C was adaptable to the high concentrated cellulose and obtained 5.8 wt % of sorbitol/mannitol concentration. The remarkably enhanced cellulose hydrolysis by ZrP sharply decreased the use of Ru/C, which is significant for the essential application.