苯甲醇的合成  

Synthesis of Benzyl Alcohol

作　　者：杨水金[1] 李昕[1] 

机构地区：[1]湖北师范学院化学与环境工程学院,湖北黄石435002

出　　处：《化工中间体》2012年第11期40-43,共4页

摘　　要：以氢氧化钠、氢氧化钾做催化剂,以甲醛,苯甲醛为原料合成苯甲醇,重点考察不同反应条件对苯甲醇合成产率的影响。在常温搅拌下,苯甲醛与甲醛的Cannizzaro反应中,最佳反应条件为:n(苯甲醛):n(甲醛)=1:1.5,催化剂为40%的KOH1.5mL,反应时间为50min。在优化条件下,苯甲醇的收率达62.79%。Benzyl alcohol was synthesized from formaldehyde and benzaldehyde in the presence of sodium hydroxide or potassium hydroxide.The factors influencing the synthesis were investigated.The optimum conditions were found.The optimum conditions were as follows:molar ratio of benzaldehyde to formaldehyde is 1,1.5,the volume of 40% KOH catalyst is 1.5mL,and the react ion time is 50min.40% KOH is an excellent catalyst for synthesizing benzyl alcohol and the product yield can reach over 62.79%.

关 键 词：CANNIZZARO反应 苯甲醇 合成 

分 类 号：TQ243.4[化学工程—有机化工]