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Hydrothermal Synthesis of Delafossite-Type Oxides

Sheets , William C. and Mugnier, Emmanuelle and Barnabé, Antoine and Marks, Tobin J. and Poeppelmeier, Kenneth R. Hydrothermal Synthesis of Delafossite-Type Oxides. (2006) Chemistry of Materials, vol. 18 (n° 1). pp. 7-20. ISSN 0897-4756

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Official URL: http://dx.doi.org/10.1021/cm051791c

Abstract

The syntheses of copper and silver delafossite-type oxides from their constituent binary metal oxides, oxide hydroxides and hydroxides, by low temperature (<210 °C) and low pressure (<20 atm) hydrothermal reactions are described. Particular emphasis is placed on how the acid-base character of a constituent oxide determines its solubility and therefore whether a particular delafossite-type oxide can be synthesized, a strategy utilized by geologists and mineralogists to understand the conditions necessary for the synthesis of various minerals. Thus, the geochemical and corrosion science literature are shown to be useful in understanding the reaction conditions required for the syntheses of delafossite-type oxides and the relationship between reactant metal oxide acid-base character, solubility, aqueous speciation, and product formation. Manipulation of the key parameters, temperature, pressure, pH, and reactant solubility, results in broad families of phase-pure delafossite-type oxides in moderate to high yields for copper, CuBO2 (B) Al, Sc, Cr, Mn, Fe, Co, Ga, and Rh), and silver, AgBO2 (B ) Al, Sc, Fe, Co, Ni, Ga, Rh, In, and Tl).

Item Type:Article
Additional Information:Thanks to American Chemical Society editor. The definitive version is available at http://pubs.acs.org The original PDF of the article can be found at Chemistry of Materials website : http://pubs.acs.org/journal/cmatex
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Northwestern University (USA)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Celine Cabaup
Deposited On:13 Oct 2009 15:54

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