摘要
我们发现以磺酸树脂作为固体酸催化樟脑肟贝克曼裂解反应可以生成α-龙脑烯腈.考察了溶剂、催化剂用量、反应温度和反应时间等对反应的影响.在优化条件下樟脑肟可以完全转化,α-龙脑烯腈选择性高达90.5%.动力学研究表明,樟脑肟在磺酸树脂催化下的贝克曼裂解反应服从准一级动力学模型,经过最小二乘法求得反应的表观活化能为64.6kJ/mol.
The Beckmann fragmentation of camphor oxime to α-campholenonitrile over solid sulfonic acid resin has been successfully performed. The influences of solvent, reaction temperature and reaction time on the fragmentation were examined. The results indicate that the conversion of oxime can reach 100% with 90.5% of selectivity to α- campholenonitrile under optimal reaction conditions. The kinetics show that Beckmann fragmentation of camphor oxime catalyzed by sulfonic acid resin obeys kinetics rule of the pseudo-first order reaction and the activation energy calculated from least square method is 64.6 kJ/mol.
出处
《分子催化》
EI
CAS
CSCD
北大核心
2010年第1期25-30,共6页
Journal of Molecular Catalysis(China)
基金
国家自然科学基金项目(No.20572021,20976043)资助
关键词
贝克曼裂解
磺酸树脂
樟脑肟
α-龙脑烯腈
Beckmann fragmentation
Sulfonic acid resin
Camphor oxime
α-Campholenonitrile
