Nanosized iron oxide and hydroxide minerals as products of the phase formation in iron-carbon-water-oxygen systems: 1. Processes and mechanisms of the phase formation in the systems of iron-carbon galvanic coupling and steel electrode; Separating the mixtures of iron-oxygen structures

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Abstract

In the first part of the investigation the principle of galvanocoagulation process under condition of iron (steel-carbon (coke) galvanic coupling was described. In the St3-Fe^0-H_2O-O_2 systems, the ultradisperse (nanosized) iron oxide and oxyhydroxide minerals of different crystallographic modifications and spinel ferrites of 3d-metals can be obtained. The physicochemical conditions of the process carrying out influence on phase composition and type of ultradisperse structures. As initial structures formed in such systems Fe(II)-Fe(III) layered double hydtoxides (protolepidocrocite or Green Rust) and ferrihydrite which spring to develop α- and γ-morphological rows of iron-oxygen structures were shown.

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• Nanosized iron oxide and hydroxide minerals as products of the phase formation in iron-carbon-water-oxygen systems: 1. Processes and mechanisms of the phase formation in the systems of iron-carbon galvanic coupling and steel electrode; Separating the mixtures of iron-oxygen structures. (deposited 07 Jan 2012 10:16) [Currently Displayed]