title: [Determination of RE2O3-Mo-Co in hydrogenation catalyst by X-ray fluorescence spectrometry].
abstract: An X-ray fluorescence spectrometer was applied to the determination of Mo-Co-RE2O3 in hydrogenation catalyst. The standard samples were manually synthesized, the powder pellets were used for sample preparation, and the matrix effects were corrected by the empirical coefficients. A series of sampling methods and spectrum conditions were studied. The ranges of the determination are MoO3: 7%-13%, CoO: 2%-7%, and RE2O3: 3%-6%. The results show that the accuracy and precision of this method are satisfactory. The relative standard deviations for MoO3, CoO and RE2O3 are less than 2% for the above analytical ranges. The method has been used in routine analyses. The results agree well with other methods.
authors.affiliation: Research Institute of Petroleum Processing, Beijing 100083, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Gao
authors.forename: Ruo-jing
authors.initials: RJ
authors.lastname: Gu
mesh_terms: D002384:Catalysis; D003035:Cobalt / Q000032:analysis*; D008674:Metals, Rare Earth / Q000032:analysis*; D008982:Molybdenum / Q000032:analysis*; D009942:Organometallic Compounds / Q000032:analysis / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission
chemical_list: D008674:Metals, Rare Earth; D009942:Organometallic Compounds; D003035:Cobalt; D008982:Molybdenum