BluePigment Cobalt-Aluminum Spinels Prepared by EDTA Chelating Method

doi:10.3969/j.issn.1007-2985.2014.01.017

journal6 ›› 2014, Vol. 35 ›› Issue (1): 72-77.DOI: 10.3969/j.issn.1007-2985.2014.01.017

• Chemistry and chemical engineering • Previous Articles Next Articles

BluePigment Cobalt-Aluminum Spinels Prepared by EDTA Chelating Method

HU Ming-Wei, WANG Hong-Quan, XIA Hao-Fu, HUANG Zhi-Liang, CHI Ru-An

(1.School of Material Science and Engineering,Wuhan Institute of Technology,Wuhan 430074,China;2.School of Chemical Engineering,Wuhan Institute of Technology,Wuhan 430074,China)

Online:2014-01-25 Published:2014-01-25
About author:HU Mingwei (1990-),male,was born in Fuzhou City,Jiangxi Province,MSLA;research area is functions and application of inorganic non-metallic materials.
Supported by:
National Natural Science Foundation of China (51374155)；National 973 Pre-Research Project (2011CB411901)

Abstract

Abstract: A method is proposed to prepare cobalt aluminum spinel blue pigment under a relatively low temperature.Cobalt aluminum spinels were prepared by the thermal decomposition of EDTA chelating cobalt and aluminum complex precursors which are derived from metal nitrate salts and ethylenediamine tetraacetic acid (EDTA).EDTA was used for chelating agent,cobalt nitrate hexahydrate and aluminum nitrate nonahydrate were used to synthesize the precursors.The phase and coloration of the prepared samples were characterized by the Commission International Eclairage (CIE) chromaticity diagram,X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR).The main variables which can systematically investigate the coloration and crystalline phase were cobalt-aluminum ratio,pH value of the reaction system and the calcination temperature.The optimizing process parameters to prepare cobalt aluminum spinel blue pigment:the temperature is 900 ℃ with 2 h heating preservation,the pH value is 9~10,and the cobalt-aluminum mole ratio is 1∶2.5 in the precursors.

Key words: ethylenediamine tetraacetic acid, orthogonal test, spinel, precursors, chelating ligand

HU Ming-Wei, WANG Hong-Quan, XIA Hao-Fu, HUANG Zhi-Liang, CHI Ru-An. BluePigment Cobalt-Aluminum Spinels Prepared by EDTA Chelating Method[J]. journal6, 2014, 35(1): 72-77.

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BluePigment Cobalt-Aluminum Spinels Prepared by EDTA Chelating Method

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