摘要
以丙烯酸和十六醇为原料,对甲苯磺酸为催化剂,采用微波辅助合成技术直接熔融制备了丙烯酸十六酯.探讨了微波功率、辐射时间、丙烯酸与十六醇摩尔比及催化剂用量等因素对酯化产率的影响;结果表明,最佳合成条件为微波功率260W、辐射时间15m in、酸与醇的摩尔比为1.3∶1.0、对甲苯磺酸用量0.7%,在此条件下制备丙烯酸十六酯的产率可达97.5%,反应速率提高16倍,充分显示了微波合成技术高效率、低能耗的优点,并为合成丙烯酸十六酯开辟了新途径.
Hexadecyl acrylate was prepared by the microwave-assisted direct melting esterification, with acrylic acid and hexadecyl alcohol as the raw materials and toluene-p-sulfonic acid as the catalyst. The effects of the microwave power, the irradiation time, the molar ratio of acrylic acid to hexadecyl alcohol and the catalyst dosage on the yield were then investigated. The results show that, in the optimum conditions of preparing hexadecyl acrylate, a microwave power of 260 W, an irradiation time of 15 min, a molar ratio of acrylic acid to hexadecyl alcohol of 1.3：1.0 and a catalyst dosage of 0. 7%, the yield of hexadecyl acrylate reaches 97.5% and the reaction rate increases by 16 times. All these reveal the superiority of microwave-assisted synthesis in terms of technological efficiency and energy cost. A new method to synthesize hexadecyl acrylate is thus provided.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第10期30-34,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
广东省高性能与功能高分子材料重点实验室开放基金资助项目
关键词
微波辅助合成
丙烯酸十六酯
酯化反应
microwave-assisted synthesis
hexadecyl acrylate
esterification reaction
