包钢稀土高盐废水零排放处理取得成果

34ＲesearchonCrystalStructureandCharacteristicofLanthanumOxide－ceriumOxideSystemJIANGYin-ju12ANWen-hu121.InnerMongoliaKeyLaboratoryofIntegratedExploitationofBayanOboMulti－MetalＲesourcesBaotou014010China2.SchoolofMaterialandMetallurgyInnerMongoliaUniversityofScienceandTechnologyBaotou014010ChinaAbstractLa2O3－CeO2withdifferentmolarratioofLatoCewerepreparedbythecoprecipitationmethod.ThecrystalstructuresofthesesampleswereanalyzedbyXＲD.ThecompositionrangeofLa2O3－Ce2O3thatexistedsteadilywasdeter-minedbythehydrogenreductionexperimentofLa2O3－CeO2.ThecharacteristicsofLa2O3－CeO2convertingintohydroxidebythehydrothermalmethodwasstudied.TheresultsshowedthatwhenmolarratioofLatoCerangedfrom0.85to0.05La2O3－CeO2existedwithface－centredcubicstructurewhenthemolarratiowas0.90or0.95La2O3－CeO2existedwithanewstructureandwhenthemolarratiowasmorethan0.7La2O3－Ce2O3couldexiststeadily.La2O3－Ce2O3couldbeconvertedintoLaOH3－CeOH3bythehydrothermalmethod.Whenthemolarratiowas0.7thetransformationconditionwastougherthanotherssotheLa2O3－Ce2O3existedmoststeadily.Keywords∶lanthanumoxideceriumoxidestructure檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪殏殏殏殏hydrothermalmethod“”。。、。46