化工学报2011，Vol.62Issue(7)：1898-1905,8.DOI:10.3969/j.issn.0438-1157.2011.07.017
纤维素在离子液体中均相酰化反应动力学
Kinetics of cellulose acylation in ionic liquid
摘要
Abstract
Using ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl) as reaction media,microcrystalline cellulose as raw material, the kinetics of homogeneous acylation of cellulose in ionic liquid was studied. The effect of initial cellulose hydroxyl concentration from 0. 21 mol · L-1 to 0. 85 mol · L-1 and temperatures from 353 K to 373 K on the acylation rate were measured. Results showed that the acylation rate increases with increasing initial cellulose hydroxyl concentration and reaction temperatures. The reaction kinetic equations were determined based on the experimental data. The reaction order for both acylation by acetic anhydride and by mixture of butyric anhydride and acetic anhydride is first-order, and their apparent activation energies are 19.03 kJ · mol-1 and 20.04 kJ · mol-1 respectively.关键词
纤维素/离子液体/均相酰化/动力学Key words
cellulose/ ionic liquid/ homogeneous acylation/ kinetics分类
化学化工引用本文复制引用
黄科林,吴睿,李会泉,曹妍,王金淑..纤维素在离子液体中均相酰化反应动力学[J].化工学报,2011,62(7):1898-1905,8.基金项目
(桂科自0991024Z) （桂科自0991024Z）
广西生物炼制重点实验室资助项目(10-046-06). （10-046-06）
