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Title: Effect of Phosphate on the Oxidation of Hydroxysulfate Green Rust

Abstract

During Hydroxysulfate green rust GR(SO{sub 4}{sup 2}) oxidation, lepidocrocite and goethite were formed. The oxidation of GR(SO{sub 4}{sup 2-}) in the presence of phosphate ions, also involved the formation of poorly crystallized lepidocrocite but not that of goethite. The dissolution of lepidocrocite is inhibited by adsorption of phosphate ions as confirmed by X-ray photoelectron spectroscopy. The formation of the poorly crystallized protective layer against corrosion is effectively due to the phosphate ions which adsorb on the surface of lepidocrocite, and prevents it to turn into a well crystallized oxide.

Authors:
 [1]; ;  [2]
  1. Laboratoire de Cinetique et Catalyse en Chimie Fine, Faculte des Sciences, Universite Ibn Tofail, BP 133 Kenitra (Morocco)
  2. Laboratoire de Chimie Physique et Microbiologie pour l'Environnement, Equipe Microbiologie et Physique, UMR 7564 CNRS-Universite Henri Poincare, 405, rue de Vandoeuvre, F-54600 Villers-les-Nancy (France)
Publication Date:
OSTI Identifier:
20722171
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 765; Journal Issue: 1; Conference: International symposium on the industrial applications of the Moessbauer effect, Madrid (Spain), 4-8 Oct 2004; Other Information: DOI: 10.1063/1.1923639; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ADSORPTION; CORROSION; DISSOLUTION; GOETHITE; IRON ALLOYS; LAYERS; MOLECULAR IONS; OXIDATION; OXIDES; PHOSPHATES; SULFATES; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Benali, Omar, Abdelmoula, Mustapha, and Genin, Jean-Marie R. Effect of Phosphate on the Oxidation of Hydroxysulfate Green Rust. United States: N. p., 2005. Web. doi:10.1063/1.1923639.
Benali, Omar, Abdelmoula, Mustapha, & Genin, Jean-Marie R. Effect of Phosphate on the Oxidation of Hydroxysulfate Green Rust. United States. doi:10.1063/1.1923639.
Benali, Omar, Abdelmoula, Mustapha, and Genin, Jean-Marie R. Tue . "Effect of Phosphate on the Oxidation of Hydroxysulfate Green Rust". United States. doi:10.1063/1.1923639.
@article{osti_20722171,
title = {Effect of Phosphate on the Oxidation of Hydroxysulfate Green Rust},
author = {Benali, Omar and Abdelmoula, Mustapha and Genin, Jean-Marie R.},
abstractNote = {During Hydroxysulfate green rust GR(SO{sub 4}{sup 2}) oxidation, lepidocrocite and goethite were formed. The oxidation of GR(SO{sub 4}{sup 2-}) in the presence of phosphate ions, also involved the formation of poorly crystallized lepidocrocite but not that of goethite. The dissolution of lepidocrocite is inhibited by adsorption of phosphate ions as confirmed by X-ray photoelectron spectroscopy. The formation of the poorly crystallized protective layer against corrosion is effectively due to the phosphate ions which adsorb on the surface of lepidocrocite, and prevents it to turn into a well crystallized oxide.},
doi = {10.1063/1.1923639},
journal = {AIP Conference Proceedings},
number = 1,
volume = 765,
place = {United States},
year = {Tue Apr 26 00:00:00 EDT 2005},
month = {Tue Apr 26 00:00:00 EDT 2005}
}