安徽农业科学2011，Vol.39Issue(7)：3790-3792,3853,4.
丁基多苷合成的影响因素探讨及其合成动力学研究
Investigation on the Factors Influencing the Synthesis of Butyl Polyglycosides and Its Synthesis Kinetics
尚会建 1杨立彦 1王亮 1允川 1蒋梁鹤 1郑学明1
作者信息
- 1. 河北科技大学化学与制药工程学院,河北,石家庄,050000
- 折叠
摘要
Abstract
[ Objective ]The paper was to study the factors influencing the synthesis of butyl polyglycosides and its synthesis kinetics. [Melhod] In the synthesis process of alkyl polyglycosides by transglycosidation method,p-toluenesulfonic arid and stearie scid were used as composite catalyst,intermediate product butyl polyglycosides were prepared via reactive distillation technology. [Result] The suitable preparation condition of bulyl polyglycosides was showed as follows: catalyst usage was 1.2 g(p-toluensulfoni∶stearic acid=6∶1),reaction tempreture was 110 ℃,the ratio of butanol and glucose was 8∶1. The results showed that the larger the molar ratio of butand and glueose was,the more the bulyl monoside counted was, and the less the polymerization degree of butyl glycosides was. The catalyst usage and reaction temperature had little influence on the composition of butyl polygycosides. With the increase of catalyst usage or reaction temperature,the reaction time was decreased dramatically. The kinetic equation for the synthesis of butyl glucoside was finally obatained as follows: -dCA/dt = 0.163 7exp( - 1.968 × l03/RT) CA - O.OCG 49exp( -2.727 × lO3/RT) C∑.[ Conclusion ] The suitable condition for the preparation of butyl polyglyosides and its synthesis kinetic equation in the study could provide theoretical basis for the synthesis of long-chain alkyl polyglycosides.关键词
丁基多苷/复合催化剂/聚合度/反应动力学Key words
Butyl polyglycosides/Composite catalyst/ Degree of polymerization/Reaction kinetic分类
农业科技引用本文复制引用
尚会建,杨立彦,王亮,允川,蒋梁鹤,郑学明..丁基多苷合成的影响因素探讨及其合成动力学研究[J].安徽农业科学,2011,39(7):3790-3792,3853,4.
