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

Abstract

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

Synthesis and Spectral Characterization of Lanthanide Complexes Containing Bidentate Schiff Base Derived From Pyridine-2-Carbaldehyde and 2-Hydrazinylquinoline

“…A weight loss of 29.17% is observed in the temperature range 360-610 °C which suggests the elimination of coordinated two quinoline ring, and from 610-8000 o C, 7.23% metal oxide is removed [49]. In the Nd-complex the amount of residue is 21.60% [53]. The TGA curve of the Pr(III)-complexes ( Figure 3B) showed a rapid first step decomposition around 800 o C with 4.4% mass loss (calculated 4.6%) indicating the loss of two lattice water molecules [54].…”