响应面法优化Fe^(3+)助纤维素酸水解制备微晶纤维素  

Hydrolysis of Cellulose for Preparation of Microcrystalline Cellulose Catalyzed by Fe^(3+) Based on Response Surface Methodology

作　　者：李金宝[1,2] 贺行[1,2] 张美云[1] 张向荣[1] 林园[1] 

机构地区：[1]陕西科技大学轻工与能源学院,陕西省造纸技术及特种纸品开发重点实验室,陕西西安710021 [2]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《纸和造纸》2013年第11期33-37,共5页Paper and Paper Making

基　　金：教育部高校博士点专项基金(20126125130001);制浆造纸工程国家重点实验室开放基金(201215);陕西科技大学博士启动基金(BJ13-02);陕西科技大学创新基金资助项目

摘　　要：基于Central-Composite实验设计(CCD),采用响应面法(RSM)研究了Fe3+催化纤维素酸水解制备微晶纤维素的最佳工艺条件,并考察了Fe3+浓度、HCl浓度、反应时间和温度4个因素对水解纤维素得率的影响,建立了相关的数学回归模型。实验结果表明:各因素对水解纤维素得率的影响显著性顺序为HCl浓度>温度>反应时间>Fe3+浓度;优化后水解纤维素的得率为83.18%,与模型的预测值基本相符;通过FTIR和XRD分析表明,最佳工艺条件下水解纤维素具有和纤维素相似的化学结构,结晶度较高。The acid hydrolysis process conditions of cellulose catalyzed by Fe3＋ in the process of preparation of microcrystalline cellulose based on response surface methodology （RSM） was investigated, the technological parameters such as Fe3＋ concentration, HCl concentration, temperature and time were optimized and the related model was established. The results showed that parameters influence on the yield of hydrocellulose from significant order to HCl concentration , temperature 〉 time 〉 Fe3＋ concentration; The yield of hydrocellulose under optimized condition was 83.18%, which was well agreed with the predicted value; The FTIR and XRD analysis showed that the hydrocellulose had the same functional groups and higher crystallinity compared with cellulose.

关 键 词：纤维素 微晶纤维素 响应面法 水解纤维素 金属离子 

分 类 号：TQ352[化学工程]