Acid monophosphates of lanthanum, praseodymium, and neodymium

Journal Article · Sun Nov 30 23:00:00 EST 1986 · Inorg. Mater. (Engl. Transl.); (United States)

OSTI ID:5775751

Butuzova, T A; Mel'nikov, P P; Komissarova, L N; Chudinova, N N

The powder x-ray diagrams of the RE acid monophosphates La/sub 4/H/sub 3/(PO/sub 4/)/sub 5/, Pr/sub 2/H/sub 3/(PO/sub 4/)/sub 3/ (0-1.5)-H/sub 2/O, and Nd/sub 2/H/sub 3/(PO/sub 4/)/sub 2/ (0-1.5)H/sub 2/O have been indexed on the basis of their isostructural nature with LnPO/sub 4/. A combined study of the thermal transformations of the acid phosphates by DAT, x-ray phase analysis, and paper chromatography showed that the thermal condensation of the anions takes place in an amorphous phase and is completed by the crystallization of LnPO/sub 4/ + Ln(PO/sub 4/)/sub 3/.

• Research Organization: M.V. Lomonosov Moscow State Univ., USSR
• OSTI ID: 5775751
• Journal Information: Inorg. Mater. (Engl. Transl.); (United States), Journal Name: Inorg. Mater. (Engl. Transl.); (United States) Vol. 22:7; ISSN INOMA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400105 -- Separation Procedures
400201 -- Chemical & Physicochemical Properties
ACID PHOSPHATES
CHEMICAL ANALYSIS
CHROMATOGRAPHY
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALLIZATION
DIFFRACTION
GRAVIMETRIC ANALYSIS
LANTHANUM COMPOUNDS
LANTHANUM PHOSPHATES
MONOCLINIC LATTICES
NEODYMIUM COMPOUNDS
NEODYMIUM PHOSPHATES
ORTHORHOMBIC LATTICES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM PHOSPHATES
QUANTITATIVE CHEMICAL ANALYSIS
RARE EARTH COMPOUNDS
SCATTERING
SEPARATION PROCESSES
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
X-RAY DIFFRACTION