新型镀锌光亮剂糠叉丙酮合成的研究

以丙酮和糠醛为原料 ,在Ando催化剂存在下合成了糠叉丙酮。对影响反应的因素作了考察 ,确定出反应的最佳工艺条件为 :n(丙酮 )∶n(糠醛 ) =3 0∶1 0 ,m(催化剂 )∶ m(反应物 ) =4 1∶10 0 0 ,反应温度 40℃ ,反应时间 4 0h ,收率可达 87 8%。产物用元素分析和红外光谱进行了确证。并将其用于酸性氯化钾和氯化钠镀锌液中均获得光亮、细致的镀锌层。

Study of the Synthetic Method of a New Type Zinc Plating Brightener Furfural Acetone

With furfuraldehyde and acetone as raw materials,furfural acetone was synthesized in the presence of Ando's catalyst.Primary influencing factors of the reaction were investigated.The optimum production conditions were as follows.n(Acetone)∶n(furfuraldehyde)=3.0∶1.0,m(catalyst)∶m(raw materials)=4.1∶100.0,reaction temperature was 40 ℃,and reaction time was 4.0 h.Under the optimum conditions,yield of furfural acetone could reach 87.8%.The structure of furfural acetone was proved by elementary analysis and IR spectrum data.It was used as zinc plating brightener in acidic sodium chloride or potassium chloride based zinc plating solution to obtain bright and fine zinc deposit.