八钼酸季铵盐催化H_2O_2氧化醇制备醛酮

Oxidation of alcohols to aldehydes or ketones with H_2O_2 over quaternary ammonium octamolybdate

制备了八钼酸季铵盐催化剂[n-C16H33(CH3)3N]4Mo8O26,考察了该催化剂在苯甲醇液相氧化制苯甲醛反应中的催化活性。在适宜的反应条件下[n(苯甲醇)∶n(H2O2)=1.0∶1.2,H2O2的质量分数为15%,催化剂[n-C16H33(CH3)3N]4Mo8O26用量为0.05g,100℃,1.0h],苯甲醛的收率可达79.6%。同时该催化剂对脂肪仲醇的氧化也表现出很好的催化活性,辛醇-2氧化为辛酮-2的收率为97.3%。

A quaternary ammonium octamolybdate [n-C16H33(CH3)3N]4Mo8O26 catalyst was prepared.This catalyst has a good performance in the oxidation of benzyl alcohol to benzaldehyde.The yield 79.6% of benzaldehyde was obtained at suitable reaction conditions(n(benzyl) alcohol∶n(H2O2)=1∶1.2,15% H2O2,0.05 g of [n-C16H33(CH3)3N]4Mo8O26,100 °C,1.0 h).This catalyst also has good catalytic activity in the oxidation of aliphatic secondary alcohols;octan-2-ol can gave octan-2-one in the yield of 97.3%.