摘要
提出了一种以水为反应介质合成肉桂醛的新方法.在近临界水中,以苯甲醛和乙醛为原料,在无外加任何催化剂的条件下,合成肉桂醛.在温度220～300 ℃范围内,测定了温度和反应时间对苯甲醛转化率和肉桂醛收率的影响.对反应条件进行了优化,在反应温度260 ℃,压力16 MPa,反应物和水体积比1∶15,反应时间5 h条件下,肉桂醛产率可达16.6%.
An environmentally benign method for synthesis of cinnamaldehyde with near-critical water as reaction medium was proposed. The results showed that cinnamaldehyde could be synthesized successfully through the reaction of phenylaldehyde with acetaldehyde in near-critical water without adding any catalyst. The effects of temperature and reaction time on the conversion of phenylaldehyde and yield of cinnamaldehyde were determined from 220°C to 300°C. The yield of cinnamaldehyde was up to 16.6% after 5 hours reaction time at 260°C, 16 MPa, volume ration of reactants to water 1:15.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2005年第5期857-860,共4页
CIESC Journal
基金
国家自然科学基金项目 (20176054)
浙江省自然科学基金项目(ZE0214)~~
