化工进展

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超声辐射下非均相甲壳素脱乙酰化反应动力学

张翠荣,贾振宇,谢华飞   

  1. 仲恺农业工程学院化学化工学院,广东 广州 510225
  • 出版日期:2011-09-05 发布日期:2011-09-05

Heterogeneous deacetylation reaction kinetics of chitin under ultrasonic irradiation

ZHANG Cuirong,JIA Zhenyu,XIE Huafei   

  1. Department of Chemistry and Chemical Engineering,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,Guangdong,China
  • Online:2011-09-05 Published:2011-09-05

摘要:

在超声辐射条件下进行了甲壳素非均相脱乙酰化反应动力学研究。结果表明,超声辐射条件下,甲壳素的脱乙酰度明显提高,反应过程符合准一级动力学关系,反应控制为扩散控制,其表观活化能为3.45 kJ/mol

Abstract:

The heterogeneous deacetylation reaction kinetics of chitin was studied under ultrasonic irradiation. The results indicated that under ultrasonic irradiationthe degree of deacetylation of chitin was improved dramaticallyand the reaction process of deacetylation reaction followed a pseudo-first order kinetic model. The reaction was diffusion controlledand its apparent activation energy was E=23.45 kJ/mol.

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