title: [Characterization and analysis of direction extraction and precipitation of cerium loading organic phase by oxalic acid solution].
abstract: In the condition of sodium hydroxide saponification, the test results using direction extraction and precipitation of cerium from P507 loading organic phase by oxalic acid solution were studied. Infared (IR) spectrum, X-ray diffraction (XRD), transmission electron microscope (TEM) and thermogravimetry (TG-DSC) were used to study and characterize organic cerium precipitates and the final calcined products. The results showed that organic cerium precipitates and final calcined products were spheric organic cerium coordination and spheric cube CeO2 crystal, respectively, showing their morphologies were successive. IR made out that the structures of organic cerium precipitates and final calcined products were different. TG-DSC indicated that the final calcined products weightlessness was 3.5% and chemical composing was CeO2 x 1/3H2O.
authors.affiliation: College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China. meiyan@bjut.edu.cn
authors.forename: Yan
authors.initials: Y
authors.lastname: Mei
authors.forename: Chuan
authors.initials: C
authors.lastname: Xia
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Chen
authors.forename: He
authors.initials: H
authors.lastname: Sun
authors.forename: Zuo-Ren
authors.initials: ZR
authors.lastname: Nie