title: Luminescence studies of decomposition of ceric sulfate.
abstract: Literature results on the decomposition products of ceric sulfate are inconsistent. A group of researchers claim that ceric sulfate decomposed to ceric oxide without going through a cerous phase at any stage, while the results of the other group show that cerous sulfate is formed as an intermediate phase. Most of these studies used DTA/TGA, XRD and IR techniques. Cerous compounds can also be detected by the characteristic luminescence of Ce(3+). Using such techniques we show that the thermal decomposition of both monoclinic and βCe(SO(4) )(2) · 4H(2) O in air at 500°C leads to the formation of cerous sulphate. Use of various atmospheres (air/N(2) /vacuum) and temperature profiles for the decomposition by the different researchers may be responsible for the discrepancies between literature results.
authors.affiliation: Physics Department, Dnyanasadhana College, Thane (W) 400604, India.
authors.forename: M A
authors.initials: MA
authors.lastname: Bakane
authors.forename: C P
authors.initials: CP
authors.lastname: Joshi
authors.forename: S V
authors.initials: SV
authors.lastname: Moharil
authors.forename: P L
authors.initials: PL
authors.lastname: Muthal
authors.forename: S M
authors.initials: SM
authors.lastname: Dhopte
mesh_terms: D049449:Luminescence; D013055:Spectrophotometry, Infrared; D013464:Sulfuric Acids / Q000737:chemistry*; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D013464:Sulfuric Acids; C042259:ceric sulfate