【摘要】 以活性炭固载磷钨酸作为催化剂,用没食子酸与异戊醇直接酯化合成了没食子酸异戊酯.通过正交实验研究了影响没食子酸异戊酯产率的主要因素,得到了最佳实验条件:醇酸物质的量的比为10∶1,催化剂固载量13.4%,用量为反应物总质量的3%,反应时间为3 h.此条件下合成的没食子酸异戊酯的收率可达88.6%.考察了该催化剂的重复使用性.更多还原

【Abstract】 Using the phosphotungstic acid immobilized on active carbon as catalyst,the iso-amyl gallate was synthesized directly by esterifying isoamyl alcohol and gallic acid.The influencing factors of the reaction were investigated through orthogonal experiment.The optimal reaction conditions were as followed: the ratio of isoamyl alcohol to gallic acid was 10∶1（mol/mol）,the content of catalyst was 3%,the H₃PW₁₂O₄₀/C was 13.4%,reaction time was 3h,the average yield of iso-amyl gallate were 88.6%.The characters of the catalyst was also studied after being reused for many times.更多还原