近临界水中苯甲醛合成新方法A Novel Process for Synthesis of Benzaldehyde in Near-critical Water
高飞,吕秀阳
摘要(Abstract)：
测定了压力15MPa下,温度240~320℃范围内肉桂醛水解反应的动力学数据。实验结果表明在无任何外加催化剂的情况下,肉桂醛能够在近临界水中顺利进行水解反应生成苯甲醛,苯甲醛产率随时间的延长先增大后减小。随温度升高,水解反应速率迅速增大,苯甲醛产率达到最大值的时间缩短。得到较佳反应条件为15MPa、280℃、反应时间6h,此时苯甲醛产率为57.0%(mol)。由Arrhenius方程,拟合得到肉桂醛水解反应的活化能为59.8kJ·mol-1。本方法制备的苯甲醛由于没有引入其它反应物,因此香气品质较佳。
关键词(KeyWords)： 近临界水;肉桂醛;苯甲醛;水解;动力学
基金项目(Foundation): 国家自然科学基金项目(20176054,20476089)。
作者(Author): 高飞,吕秀阳
参考文献(References)：
- [1]ZHANG Cheng-ceng(张承曾).Handbook of Natural Spices(天然香料手册)[M].Beijing(北京):Light Industry Press(轻工业出版社),1989.109.
- [2]YI Feng-pin(易封萍),LI Wei-guang(李伟光),LIU Xiong-min,et al(刘雄民等).Preparation of benzaldehyde by ozonization reaction from narural cinnamon oils(天然肉桂油臭氧化制取苯甲醛)[J].Fine Chemicals(精细化工),1996,13(6):32-34.
- [3]YI Feng-pin(易封萍),LI Wei-guang(李伟光).New food additive??bitter almond oil(新型食品添加剂苦杏仁油)[J].Food Science(食品科学),1998,19(6):14-16.
- [4]Wiener C,Pittet A O.Process for preparing natural benzaldehyde and acetaldehyde,natural benzaldehyde and acetaldehyde compositions,products produced thereby and organoleptic utilities therefore[P].USP:4,617,419,1986.
- [5]ZHU Fu-gen(诸富根),ZHOU Shan-hua(周山花),YANG Lei(杨磊).Stady of liquid-liquid heterogeneous reaction in preparing benzaldehyde(制备苯甲醛的液-液非均相反应过程)[J].Fine Chemicals(精细化工),2002,19(11):678-681.
- [6]CUI Jian-guo(崔建国),LU Jun(卢军),FAN Ping,et al(樊平等).Preparation of natural benzaldehyde from hydrolysis of cassia leaf oil(桂叶油水解制备天然苯甲醛的研究)[J].Guangxi Chemical Industry(广西化工),1997,26(3):1-3.
- [7]Siskin M,Katritzky A R.Reactivity of organic compounds in hot water:geochemical and technological implications[J].Science,1991,254(11):231-237.
- [8]LüXiu-yang(吕秀阳),HE Long(何龙),ZHENG Zan-sheng,et al(郑赞胜等).Green chemical progress in near-critical water(近临界水中的绿色化工过程)[J].Chemical Industry and Engineering Progress(化工进展),2003,22(5):477-481.
- [9]LüXiu-yang(吕秀阳),Sakoda A(追田章义),Suzuki M(铃木基之).An apparatus for continuous treatment of solid wastes by supercritical and near-critical water reactions(固体废弃物在超/近临界水中连续分解装置的研制)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2001,15(1):40-45.