摘要
以笋壳纤维素为试材，离子液为溶剂兼催化剂，进行纤维素降解制备5-羟甲基糠醛（5-HMF）优化研究。首先，采用单因素试验设计，考察了料液比、反应时间、反应温度、二甲基亚砜量、加水量对5-HMF产率的影响，结果显示影响产率的关键因素为料液比、反应时间及反应温度。再以5-HMF产率为响应值，采用Box-Behnken中心组合法对降解条件进行优化研究，结果表明：当料液比1：15．1（m：y），反应时间7．10h，反应温度89．56℃时，5-HMF产率最高，为35．97％。验证实验结果与预测值相差为1．43％～1．63％，表明预测模型具有实际参考价值。
With the bamboo shell cellulose as raw material, and the i onic liquids as the solvent and catalyst, the process of cellulose deg- radation for preparation of 5- hydroxymethyl-furfural（5-HMF） was investigated. Firstly, the effects were studied, including solid-liquid ratio, reaction time, reaction temperature, amount of dimethyl sul- foxide and water on the yield of 5 HMF, by single-factor experi- ments. It was showed that the key factors influencing the yields were solid-liquid ratio, reaction time and reaction temperature. Secondly, the yield of 5 HMF as response value, the key degradation conditions were optimized by using Box-Behnken central combination method. The optimum conditions were as followed= solid-liquid ratio 1 = 15.1 （rn ： V）, reaction time 7. 10 h, reaction temperature 89. 56 ℃. In the conditions, the yield of 5-HMF was the highest, 35.97%. The gap between predicted and verified was 1.43% ~ 1.63%, and dem- onstrated that the model had practical reference value.
出处
《食品与机械》
CSCD
北大核心
2013年第6期211-215,共5页
Food and Machinery
基金
国家自然科学基金(编号:31170672)
国家级大学生创新创业训练计划(编号:201210341001)
关键词
笋壳
纤维素
离子液
5羟甲基糠醛
bamboo shell
cellulose
ionic liquid
5 hydroxymethyl- furfural
