苯甲醛的提纯方法研究  

Study on Purification of Benzaldehyde

作　　者：肖健 谢水龙 刘先章[1,2,3] 

机构地区：[1]厦门劲美生物科技有限公司,福建厦门361003 [2]中国林业科学研究院林产化学工业研究所 [3]国家林业局林产化学工程重点开放性实验室,江苏南京210042

出　　处：《生物质化学工程》2009年第1期25-27,共3页Biomass Chemical Engineering

摘　　要：以肉桂油为原料,经水解反应可以制备天然苯甲醛,但制备的天然苯甲醛中存在少量杂质无法用精馏方法除去,本研究利用亚硫酸氢钠与苯甲醛加成反应来进行提纯,还研究了酸化或碱化、反应温度和加水量等不同操作条件对此反应的影响。结果表明,用酸化、碱化对加成物进行水解,除去杂质,产品纯度能达到99.0%以上,且酸法提纯略优于碱法。The natural benzaldehyde could be prepared by hydrolysis of Chinese cinnamon oil, but a small amount of impurity in prepared nutural benzaldehyde was difficult to be removed by rectification process. The purification of benzaldehyde was studied by addition of benzaldhyde with sodium bisulfite. The effects of acid or alkali, reaction temperature, water amount and different operation conditions on the reaction were also discussed. The results.showed that the purity of benzaldehyde was over 99.0 % after hydrolysis of adduct by acidification or basification to remover the impurity and acidification for purification was slightly better than basification.

关 键 词：天然苯甲醛 提纯 加成 亚硫酸氢钠 

分 类 号：TQ244.1[化学工程—有机化工]