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Synthesis and characterization of (NH4)1.5Cu2Cr2O8(OH)1.5⋅H2O

Published online by Cambridge University Press:  29 February 2012

Johana Arboleda ,
Adriana Echavarria  and
Luz Amparo Palacio
Johana Arboleda
Affiliation:
Grupo Catalizadores y Adsorbentes, Universidad de Antioquia, A.A. 1226 Medellin, Colombia
Adriana Echavarria
Affiliation:
Grupo Catalizadores y Adsorbentes, Universidad de Antioquia, A.A. 1226 Medellin, Colombia
Luz Amparo Palacio*
Affiliation:
Grupo Catalizadores y Adsorbentes, Universidad de Antioquia, A.A. 1226 Medellin, Colombia
*
b)Author to whom correspondence should be addressed. Electronic mail: luzamparopalacio@gmail.com
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Abstract

A new single-phase copper chromate compound was successfully synthesized by a hydrothermal method and characterized by XRD, SEM, TGA, and XRF analysis. The experimental XRD pattern was analyzed by automatic indexing and the compound was found to be monoclinic with space group P21/a and unit-cell parameters of a=10.1829(11) Å, b=4.9516(6) Å, c=7.2899(7) Å, and β=103.64(1)°. The chemical formula of the copper chromate compound determined by XRF and TGA was determined to be (NH4)1.5Cu2Cr2O8(OH)1.5⋅H2O. XRD results also showed that the synthesized compound decomposed into CuCr2O4 and CuO after being calcined at 600 °C.

Keywords

copper chromatehydrothermal synthesisTGAXRD
Type
New Diffraction Data
Information
Powder Diffraction , Volume 24 , Issue 3 , September 2009 , pp. 244 - 246
Copyright
Copyright © Cambridge University Press 2009

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