Chromium(III) catalysed oxidation of tellurium(IV) by cerium(IV) in acid media - A kinetic study

被引：0
|
作者：
Morab, VA [1 ]
Tuwar, SM [1 ]
Nandibewoor, ST [1 ]
机构：
[1] Karnatak Univ, PG Dept Studies Chem, Dharwad 580003, Karnataka, India
来源：
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 1999年 / 210卷
关键词：
kinetics; oxidation of tellurium(IV); cerium(IV); catalysis by chromium(III);
D O I：
暂无
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The micro amount of chromium(III) catalyses the oxidation of tellurium(IV) by cerium(IV) in acid medium which proceeds through substrate catalyst complex. The effectiveness of catalyst is maximum in the mixture of acids (HClO4, + H2SO4) compared to the individual acids. The active species of cerium(lV), tellurium(IV) and chromium(III) are understood to be as H3Ce(SO4)(4)(-) TeO(OH)(+) and Cr3+. SO42- respectively under the reaction conditions studied, and the possible mechanisms are discussed.
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页码：141 / 155
页数：15
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