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


Autoria(s): Machado,Luiz Carlos; Morigaki,Milton Koiti; Marins,Antonio Augusto Lopes; Muri,Emanuel José Bassani; Freitas,Jair Carlos Checon de
Data(s)

01/11/2002

Resumo

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 °C 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.

Formato

text/html

Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422002000600003

Idioma(s)

en

Publicador

Sociedade Brasileira de Química

Fonte

Química Nova v.25 n.6a 2002

Palavras-Chave #chemical synthesis #oxide #thin film
Tipo

journal article