NATURE AND REACTIVITY OF INTERMEDIATES IN THE AUTOXIDATION OF IRON(II) IN AQUEOUS ACID-MEDIA

被引：17

作者：

DOMINGO, C ^{[1
]}

RODRIGUEZ-CLEMENTE, R ^{[1
]}

BLESA, MA ^{[1
]}

机构：

[1] COMIS NACL ENERGIA ATOM, DEPT QUIM REACTORES, RA-1429 BUENOS AIRES, ARGENTINA

来源：

SOLID STATE IONICS | 1993年 / 59卷 / 3-4期

关键词：

D O I：

10.1016/0167-2738(93)90049-9

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 aereal oxidative precipitation of iron (hydrous) oxides from aqueous solutions of ferrous salts has been studied by potentiometric titration and pH drift techniques. The stability of the green rust formed by reaction of dissolved Fe(II) and Fe2O3.nH2O has been estimated from the potentiometric experiments. The pH drift data were used to compare the time evolution of base consumption and the time evolution of oxidation. Several distinct stages are identified. Literature data on the kinetics of autooxidation of Fe(II) were used to show the operation of a heterogeneous oxidation mechanism. The influence of anions on the nature of the final phase formed by total oxidation of the green rust is also discussed.

引用

页码：187 / 195

页数：9

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