TY - JOUR
T1 - Synthesis and investigation of neptunium zirconium phosphate, a member of the NZP family: crystal structure, thermal behaviour and Mössbauer spectroscopy studies
AU - Bykov, Denis
AU - Konings, R.J.M.
AU - Apostolidis, C.
AU - Hen, A.
AU - Colineau, E
AU - Wiss, T
AU - Raison, P.
PY - 2017/8/23
Y1 - 2017/8/23
N2 - A new double neptunium zirconium phosphate of the type MxZr2(PO4)3 (M = Np), crystallizing in the structure type NaZr2(PO4)3 (NZP, NASICON), was synthesized by solid state reactions at high temperatures and characterized by X-ray diffraction, infrared spectroscopy and Mössbauer spectroscopy. The Rietveld refinement of the XRD pattern together with the analysis of the IR spectra of the sample confirmed the space group P[3 with combining macron]c, the same as that for the lanthanide analogues Ln0.33Zr2(PO4)3. However, Mössbauer studies revealed the presence of neptunium in the two oxidation states +3 and +4, indicating a two-phase NZP system with different crystallographic environments of the neptunium atoms. The thermal behaviour of the sample was followed up to 1400 °C by thermogravimetric analysis.
AB - A new double neptunium zirconium phosphate of the type MxZr2(PO4)3 (M = Np), crystallizing in the structure type NaZr2(PO4)3 (NZP, NASICON), was synthesized by solid state reactions at high temperatures and characterized by X-ray diffraction, infrared spectroscopy and Mössbauer spectroscopy. The Rietveld refinement of the XRD pattern together with the analysis of the IR spectra of the sample confirmed the space group P[3 with combining macron]c, the same as that for the lanthanide analogues Ln0.33Zr2(PO4)3. However, Mössbauer studies revealed the presence of neptunium in the two oxidation states +3 and +4, indicating a two-phase NZP system with different crystallographic environments of the neptunium atoms. The thermal behaviour of the sample was followed up to 1400 °C by thermogravimetric analysis.
UR - http://resolver.tudelft.nl/uuid:39842aed-a9b1-412e-bb61-56428c90112b
U2 - 10.1039/C7DT02110K
DO - 10.1039/C7DT02110K
M3 - Article
SN - 1477-9226
VL - 46
SP - 11626
EP - 11635
JO - Dalton Transactions: the international journal for inorganic, organometallic and bioinorganic chemistry
JF - Dalton Transactions: the international journal for inorganic, organometallic and bioinorganic chemistry
IS - 35
ER -