肉桂醛低浓度碱性水解反应体系的研究  

Study on alkaline hydrolytic system of cinnamaldehyde with low consistency

作　　者：吴晏玲[1] 李伟光[1] 刘雄民[1] 秦荣秀[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《应用化工》2009年第1期35-37,共3页Applied Chemical Industry

基　　金：广西自然科学基金项目(桂科基0342005-3);广西教育厅项目(桂教科研【2007】34号)

摘　　要：利用等吸收点建立了紫外分光光度法定量分析肉桂醛、苯甲醛和5-苯-2，4-戊二烯醛三组分的方法，构建了组分浓度与吸光度之间的关系：CPPDA=（A338＋0．0389）／0．1740，C肉桂醛=（A303-0．1177CPPDA）／0．1138，C苯甲醛=（A255-0．0427 C内桂醛-0．0209 CPPDA）／0．0597，研究了肉桂醛在低浓度40-60℃条件下的水解反应。结果表明，水解反应速率随温度降低趋于缓慢，反应时间越短副反应越少。采用一级反应动力学模型对动力学数据进行拟合，得到肉桂醛水解反应的活化能为56．59kJ／mol。A simple and rapid method of quantitative analysis mixtures which includes benzaldehyde, cinnamaldehyde and 5-phenyl-2,4-pentadienal was established with the use of equal-absorption point, the relationships between concentration and absorbanee was established by equal-absorption point：CPPDA = （A338 ＋0.038 9）/0. 174 0,C肉桂醛 = （A303 -0. 117 7 CPPDA）/0. 113 8,C苯甲醛= （A255 -0. 042 7 C肉桂醛 - 0.020 9 CPPDA ）/0. 059 7. The hydrolysis reactions of cinnamaldehyde were studied in the condition of 40 - 60 ℃ and low concentration. The results show that the degree of hydrolysis reaction depends on temperature and time. The activation energy evaluated from the Arrhenius equation is 56.59 kJ/mol.

关 键 词：肉桂醛 水解 苯甲醛 5-苯-2 4-戊二烯醛 紫外分光光度法 活化能 

分 类 号：TQ031.5[化学工程] O643.12[理学—物理化学]