Na_2WO_4·2H_2O-H_2O_2催化氧化苯甲醛制备苯甲酸  

Preparation of Benzoic Acid via Oxidation of Benzaldehydes Using Na_2WO_4·2H_2O-H_2O_2 as a Catalyst

作　　者：李东胜[1] 严红燕[1] 刘春生[1] 罗根祥[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《合成化学》2004年第6期595-597,共3页Chinese Journal of Synthetic Chemistry

摘　　要：以 3 0 %H2 O2 为氧源 ,Na2 WO4·2H2 O催化氧化苯甲醛制备苯甲酸。考察了H2 O2 用量 ,反应时间 ,催化剂和酸性添加物 (硫酸氢钠 )对苯甲酸收率的影响和在非酸性环境下 ,表面活性剂对苯甲酸收率的影响。结果表明 ,加入非离子表面活性剂能有效的提高苯甲酸的收率 ,特别是添加 β 环糊精 ,苯甲酸的收率达 90 .0 3 %。Benzoic acid was synthesized via oxidation of benzaldehydes using Na 2WO 4 ·2H 2O as a catalyst. It was investigated that the effects of hydrogen peroxide dosage, the reaction time, the amount of catalyst and acidic additive (NaHSO 4·H 2O) on the yield of benzoic acid; the effect of surfactant on yield of benzoic acid was discussed in the acid-free system. Non-ionic surfactant can effectively improve the yield of benzoic acid, such as the yield reached 90.03% by β-CD.

关 键 词：钨酸钠 苯甲醛 苯甲酸 表面活性剂 硫酸氢钠 催化 

分 类 号：O621.25[理学—有机化学]