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

Authors
Morab, VA Tuwar, SM Nandibewoor, ST
Citation
Va. Morab et al., Chromium(III) catalysed oxidation of tellurium(IV) by cerium(IV) in acid media - A kinetic study, Z PHYS CHEM, 210, 1999, pp. 141-155
Citations number
24
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
ISSN journal
09429352 → ACNP
Volume
210
Year of publication
1999
Part
2
Pages
141 - 155
Database
ISI
SICI code
0942-9352(1999)210:<141:CCOOTB>2.0.ZU;2-L
Abstract
The micro amount of chromium(III) catalyses the oxidation of tellurium(IV) by cerium(IV) in acid medium which proceeds through substrate catalyst comp lex. The effectiveness of catalyst is maximum in the mixture of acids (HClO 4, + 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 stu died, and the possible mechanisms are discussed.