磺酸树脂在樟脑肟贝克曼裂解反应中的催化作用  

Beckmann Fragmentation of Camphor Oxime Catalyzed by Sulfonic Acid Resin

作　　者：左传鹏[1] 尹笃林[1] 杨拥军[1] 刘贤响[1] 龚妍[1] 毛丽秋[1] 

机构地区：[1]资源精细化及先进材料湖南省高校重点实验室、湖南师范大学精细催化合成研究所,湖南长沙410081

出　　处：《分子催化》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

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.

关 键 词：贝克曼裂解 磺酸树脂 樟脑肟 α-龙脑烯腈 

分 类 号：O643.32[理学—物理化学]