以茴脑为原料,有机溶剂与水复合溶剂为溶剂,室温下通过臭氧化分解反应制取茴香醛,并通过GC-MS、FT-IR和1H-NMR对产品进行了表征。对该溶剂体系与传统溶剂体系下茴香醛的产率进行了对比,并确定了丙酮/水体系为最佳溶剂体系。实验详细考...以茴脑为原料,有机溶剂与水复合溶剂为溶剂,室温下通过臭氧化分解反应制取茴香醛,并通过GC-MS、FT-IR和1H-NMR对产品进行了表征。对该溶剂体系与传统溶剂体系下茴香醛的产率进行了对比,并确定了丙酮/水体系为最佳溶剂体系。实验详细考察了溶剂用量、臭氧气流量、混合溶剂中水含量和反应时间等工艺参数。优化的工艺条件为:丙酮和水为溶剂,m(茴脑):m(混合溶剂)=1:3,臭氧气流量0.06 m3 h 1,混合溶剂中水的质量含量为15%,反应时间100 min,茴香醛产率82.70%。该反应在水的存在下实现了室温下一步法合成茴香醛,避免了茴脑臭氧化物的分离及还原步骤,工艺简单,洁净环保。展开更多
Anisaldehyde was synthesized and charcaterized.Rate constants of oxidation reaction of anethole to anisaldehyde by Ceric Sulfate at different temperature（15-35℃）were measured.The rate equation,d/dt=k[Ce4+]and appar...Anisaldehyde was synthesized and charcaterized.Rate constants of oxidation reaction of anethole to anisaldehyde by Ceric Sulfate at different temperature（15-35℃）were measured.The rate equation,d/dt=k[Ce4+]and apparent activation energy（51.12 KJ/mol）of the reaction were found.展开更多
文摘以茴脑为原料,有机溶剂与水复合溶剂为溶剂,室温下通过臭氧化分解反应制取茴香醛,并通过GC-MS、FT-IR和1H-NMR对产品进行了表征。对该溶剂体系与传统溶剂体系下茴香醛的产率进行了对比,并确定了丙酮/水体系为最佳溶剂体系。实验详细考察了溶剂用量、臭氧气流量、混合溶剂中水含量和反应时间等工艺参数。优化的工艺条件为:丙酮和水为溶剂,m(茴脑):m(混合溶剂)=1:3,臭氧气流量0.06 m3 h 1,混合溶剂中水的质量含量为15%,反应时间100 min,茴香醛产率82.70%。该反应在水的存在下实现了室温下一步法合成茴香醛,避免了茴脑臭氧化物的分离及还原步骤,工艺简单,洁净环保。
文摘Anisaldehyde was synthesized and charcaterized.Rate constants of oxidation reaction of anethole to anisaldehyde by Ceric Sulfate at different temperature（15-35℃）were measured.The rate equation,d/dt=k[Ce4+]and apparent activation energy（51.12 KJ/mol）of the reaction were found.
