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Oxochloroalkoxide of the Cerium (IV) and Titanium (IV) as oxides precursor

By Machado Luiz Carlos, Morigaki Milton Koiti, Marins Antonio Augusto Lopes, Muri Emanuel José Bassani and Freitas Jair Carlos Checon de


The Cerium (IV) and Titanium (IV) oxides mixture (CeO2-3TiO2) was prepared by thermal treatment of the oxochloroisopropoxide of Cerium (IV) and Titanium (IV). The chemical route utilizing the Cerium (III) chloride alcoholic complex and Titanium (IV) isopropoxide is presented. The compound Ce5Ti15Cl16O30 (iOPr)4(OH-Et)15 was characterized by elemental analysis, FTIR and TG/DTG. The X-ray diffraction patterns of the oxides resulting from the thermal decomposition of the precursor at 1000 degreesC for 36 h indicated the formation of cubic cerianite (a = 5.417Å) and tetragonal rutile (a = 4.592Å) and (c = 2.962 Å), with apparent crystallite sizes around 38 and 55nm, respectively

Topics: chemical synthesis, oxide, thin film, Chemistry, QD1-999
Publisher: Sociedade Brasileira de Química
Year: 2002
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