DEGRADATION OF AZO DYES BY SODIUM-HYPOCHLORITE .3. ESTIMATION OF THE RATE-EQUATION FOR THE DEGRADATION OF ORANGE-G AND BENZOPURPURINE

被引：10

作者：

KANAZAWA, H ^{[1
]}

ONAMI, T ^{[1
]}

机构：

[1] FUKUSHIMA MED COLL, DEPT CHEM, FUKUSHIMA 96012, JAPAN

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 1995年 / 68卷 / 09期

关键词：

D O I：

10.1246/bcsj.68.2483

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Degradation of azo dyes, Orange G and Benzopurpurine, by sodium hypochlorite in water was observed by UV spectroscopy. The observed values of the maximum absorbance in the spectra of the reaction mixture fitted well with the polynomials of the fifth degree in reaction time, t. The initial degradation rate of each dye was obtained easily as the differential coefficient of the functions at time 0. The degradation rate (R(d)) of both dyes in the initial stage of the reaction was given by the second-order rate equation, R(d)=k[Dye][NaOCl], where k is a rate constant. Apparent activation energies and frequency factors of the degradation were estimated as 20.3 kJ mol(-1) and 4.59x10(4) dm(3) mol(-1) s(-1), respectively, for Orange G, and 9.56 kJ mol(-1) and 5.78x10(3) dm(3) mol(-1)s(-1) for Benzopurpurine.

引用

页码：2483 / 2489

页数：7