Electrochemical Dissolution of Iron(III) Hydroxy-Oxides: More Information About the Particles

[img]PDF - Authorized users only
Language: English
81Kb
Title:Electrochemical Dissolution of Iron(III) Hydroxy-Oxides: More Information About the Particles
Creators:
Grygar, Tomáš
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 61, 1, pp. 93-106
Uncontrolled Keywords:Oxides Fe(III), Abrasive stripping voltammetry

Abstract

The process of reductive dissolution of α-Fe<sub>2</sub>O<sub>3</sub>, Ba-hexaferrite, α-FeOOH, γ-Fe<sub>2</sub>O<sub>3</sub>, γ-FeOOH, and ferrihydrite can be monitored continuously by abrasive stripping voltammetry and chronoamperometry to obtain information about homogeneity of reactivity and about the particle size of the pure phases and mixtures. Phase parameters (rate constant and charge transfer coefficient) and the geometrical factor γ, which is independent on the specific surface area, can be assigned to a phase-pure sample in the given medium. Differences in reactivity of the hydroxy-oxides are documented, and the dependence of reactivity of the α-Fe<sub>2</sub>O<sub>3</sub> samples on the preparation procedure is characterized. The electrochemical techniques can also be employed to investigate changes in the particles during phase transformations.

Title:Electrochemical Dissolution of Iron(III) Hydroxy-Oxides: More Information About the Particles
Creators:
Grygar, Tomáš
Uncontrolled Keywords:Oxides Fe(III), Abrasive stripping voltammetry
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:61
Number:1
Page Range:pp. 93-106
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19960093UNSPECIFIED
ID Code:917
Item Type:Article
Deposited On:06 Feb 2009 17:05
Last Modified:06 Feb 2009 16:05

Citation

Grygar, Tomáš (1996) Electrochemical Dissolution of Iron(III) Hydroxy-Oxides: More Information About the Particles. Collection of Czechoslovak Chemical Communications, 61 (1). pp. 93-106. ISSN 0010-0765

Repository Staff Only: item control page