Journal
MATERIALS RESEARCH BULLETIN
Volume 37, Issue 1, Pages 69-76Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0025-5408(01)00799-1
Keywords
oxides; chemical synthesis; photoelectron spectroscopy; catalytic properties
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In preparation for synthesizing LaCoO3, gel was prepared by adding citric acid to the aqueous solution of La(NO3)(3).6H(2)O and Co(NO3)(2).6H(2)O. The infrared spectrum indicates that the gel prepared with 0.007 mol of citric acid is the mixture of LaCo(C6H5O7)(NO3)(3), lanthanum nitrate, and cobalt nitrate, while the gel prepared with 0.011 mol of citric acid is LaCo(C6H5O7)(2). Perovskite-type LaCoO3 was obtained by firing the gel above 600degreesC. The LaCoO3 surface was characterized by X-ray photoelectron spectroscopy and with respect to the catalytic activity of CO oxidation. (C) 2002 Elsevier Science Ltd. All rights reserved.
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