摘要
以对甲苯磺酸铜作为合成邻苯二甲酸二丁酯的催化剂,考察醇酸物质的量比、催化剂用量和反应时间对酯化率的影响。实验结果表明,其较优条件为邻苯二甲酸酐0.05mol,醇酸物质的量比=2.0∶1,催化剂用量为原料邻苯二甲酸酐物质的量的1.5%,回流温度下反应2.5h,在此条件下酯化率可达98.5%。反应后对甲苯磺酸铜经过简单的相分离就可重复使用,无需再生,兼有均相和多相催化剂的优点。
Copper p-toluene sulfonate was used as the catalyst for esterification of phthalic anhydride with n-butanol. The influence of alcohol-to-acid molar ratio, catalyst dosage and reaction time was investigated. The results showed that appropriate reaction condition was as follows： n-butanol-to-phthalic-anhydride molar ratio 2.0： 1, catalyst dosage = 1.5% molar percentage of phthalic anhydride, reaction time 2.5 h at reflux temperature. Esterification rate of up to 98.5 % was obtained. Copper p-toluene sulfonate could be repeated used after simple phase-separation without need of regeneration. The catalyst had the merits of both homogeneous and heterogeneous catalyst.
出处
《工业催化》
CAS
2007年第4期42-44,共3页
Industrial Catalysis
基金
湖南省教育厅优秀青年科研基金项目(06B089)
湖南省青年骨干教师培养对象基金项目(湘教通[2004]252)
