苯酚羟化过程中过氧化氢的分解行为研究

STUDIES OF DECOMPOSITION BEHAVIOR OF H_2O_2 IN THE PROCESS OF PHENOL HYDROXYLATION

分别以水及二氧六环、乙腈为溶剂，研究了苯酚、邻苯二酚、对苯二酚及苯醌对Ｈ２Ｏ２分解的抑制作用。实验结果表明，当以水为溶剂时，有机底物的加入使Ｈ２Ｏ２分解反应的活化能上升，氧气的分解量下降；而在有机溶剂中，有机底物并不起抑制作用。当有机底物的浓度大于２．５％时，抑制作用下降。几种有机底物的抑制能力为：邻苯二酚＞苯酚＞对苯二酚＞苯醌。

おhe restrained effect of phenol,CAT,HQ,BQ to the decomposition behavior of H_2O_2 was researched in water and organic solvents.The results indicate that the decomposition active energy of H_2O_2 increases with the addation of organic compounds,such as phenol,CAT,HQ,BQ,in the solvent of water,and at the same time the amount of O_2 decrease.When the solvent was changed with dioxane or acetonitrile,no the restrained effect appeared.The restrained effect decrease at the concentration of organic compounds higher than 2.5%.The restrained ability of the organic compounds is as follows:CAT>Phenol>HQ>BQ.