Phenol-KBrO_3-H_2SO_4非催化振荡体系的非线性特征  

The nonlinear characteristics in the non-catalyzed oscillating system of phenol-KBrO_3-H_2SO_4

作　　者：杨武[1] 王明强[1] 高锦章[1] 任杰[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2013年第1期61-65,共5页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(20873101);甘肃省高等学校基本科研业务费资助项目(5001-109);甘肃省自然科学基金资助项目(1010RJZA015)

摘　　要：考察了以苯酚为有机底物的非催化化学振荡体系的行为特征.结果表明,phenol-KBrO3-H2SO4体系呈现的非线性特征对反应物的初始浓度和搅拌非常敏感.改变反应物的初始浓度,体系会呈现出单区振荡、双区振荡和三区振荡.对体系出现不同振荡行为的机理研究表明,在搅拌条件下有机底物苯酚被一定浓度的酸性溴酸钾溶液先氧化成对苯二酚,对苯二酚作为第三区的有机底物继续被氧化成其他产物,且此产物可以作为第二区振荡反应的有机底物.This paper studies the nonlinear behaviors of phenol as substrate to a non-catalytic oscillating system of phenol-KBrO3-H2SO4.The results show that the nonlinear characteristics of the system are very sensitive to the initial concentration of reactants and stirring.At the different initial concentration of reactants,one oscillatory region,two and the three regions are observed in the system.The mechanism research indicates that phenol is oxidized to hydroquinone which is the organic substrate in the third oscillatory regime in acidic potassium bromate solution,and hydroquinone is oxidized to another product continuously,which is the substrate of the second regime reaction.

关 键 词：苯酚 非线性特征 机理 

分 类 号：O643.1[理学—物理化学]