KINETICS AND MECHANISM OF IRON (Ⅲ) CATALYZED OXIDATION OF HYDROXYLAMINE BY 12-TUNGSTO-COBALT(Ⅲ)ATE

doi:10.7517/j.issn.1674-0475.1991.01.76

Imaging Science and Photochemistry ›› 1991, Vol. 9 ›› Issue (1): 76-80.DOI: 10.7517/j.issn.1674-0475.1991.01.76

KINETICS AND MECHANISM OF IRON (Ⅲ) CATALYZED OXIDATION OF HYDROXYLAMINE BY 12-TUNGSTO-COBALT(Ⅲ)ATE

CHEN YU-CONG, ZHOU BEN-MAO, REN XIN-MIN

Institute of Photographic Chemistry, Academia Sinica, Beijing 100101, P.R. China

Received:1989-08-10 Revised:1990-05-03 Online:1991-02-20 Published:1991-02-20

Abstract

Abstract: Different from in HAc-NaAc (pH = 3.9-5.0), in HClO₄-NaClO₄ ([H+] - 0.1-0.4 mol/L) the reaction of the Fe (Ⅲ) catalyzed oxidation of hydroxylamine by 12-tungstocobalt (Ⅲ) ate obeys the following kinetic law:

This paper gives a description of the mechanism of the synergetic electron-proton transfer between NH₂OH and Fe³⁺(OH)^1- through a pentagonal model, considering that the active form of Fe (Ⅲ) is Fe³⁺(OH)^1-.

Key words: oxidation kinetics, Co(Ⅲ)-complex, electron transfer, homogeneous catalysis

CHEN YU-CONG, ZHOU BEN-MAO, REN XIN-MIN. KINETICS AND MECHANISM OF IRON (Ⅲ) CATALYZED OXIDATION OF HYDROXYLAMINE BY 12-TUNGSTO-COBALT(Ⅲ)ATE[J]. Imaging Science and Photochemistry, 1991, 9(1): 76-80.

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KINETICS AND MECHANISM OF IRON (Ⅲ) CATALYZED OXIDATION OF HYDROXYLAMINE BY 12-TUNGSTO-COBALT(Ⅲ)ATE

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