Pre-oxidative catalytic treatment of toluidine blue with potassium permanganate in acidic solution

作     者：Rafia AZMAT Faryal Vali MOHAMMED Tehseen AHMED Qurat-ul-Ain TANWIR 

作者机构：Department of ChemistryUniversity of KarachiKarachi 75270Pakistan International Chemical and Biological Sciences CenterH.E.J Reaseach Institute of ChemistryUniversity of KarachiKarachi 75270Pakistan Department of ChemistryJinnah University for WomenKarachi 74600Pakistan 

出 版 物：《Frontiers of Chemistry in China》 (中国化学前沿（英文版）)

年 卷 期：2011年第6卷第2期

页      面：84-90页

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

主　　题：oxidation TB potassium permanganate decoloration Pb 

摘      要：This article describes the potential of KMnO4 for oxidation of the thiazine dye(Toluidine blue TB)in an acidic *** effect of different operational parameters like initial concentration of dye,potassium permanganate,pH,ionic strength,catalyst,acids and temperature were investigated spectrophotometrically at λ_(max)=613 *** results showed a complete removal of the TB with mineralization of the dye *** and complete decoloration was observed in the presence of monobasic acid(HCl)as compared to the H_(2)SO_(4) where little color removal was *** was found to be an effective catalyst in oxidation for complete and fast decolorization with *** significant change at elevated temperatures showed that an intermediate complex degraded with slight change in the ***/visible spectrophotometry and GC mass analysis showed an intermediate activated complex demethylated sulophooxide of TB which later on degraded into smaller fragments.