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Preparation of CuCrO2 Powders with High Surface Areas

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Abstract:

In this study, the effects of glycine-nitrate ratios and postcombustion chemical treatment on the phase evolution and surface area of CuCrO2 powders were investigated. The pure phase of CuCrO2 powders was obtained at a glycine-nitrate ratio of 1.2–1.4. When the glycine-nitrate ratio was higher than 1.9, the Cu ions were reduced to Cu(0) and the phase of Cu metal and Cr2O3 were observed. However, when the glycine-nitrate ratio was lower than 1.1, the Cu ions were partially maintained as Cu(2+), and a bluish residue was observed. As-combusted CuCrO2 powder with a high surface area (50 m2/g) was obtained at a glycine-nitrate ratio of 1.2. Furthermore, a high surface area (> 60 m2/g) was obtained by leaching as-combusted CuCrO2 powder with diluted nitric acid.

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Periodical:

Key Engineering Materials (Volume 617)

Pages:

187-190

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.617.187

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Online since:

June 2014

Authors:

Te Wei Chiu*, Yi Wei Feng

Keywords:

CuCrO2, Glycine-Nitrate Process, Surface Area

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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