Layered metal uranyl phosphates. Retention of divalent ions by amine intercalates of uranyl phosphates

1 January 1986

journal article
Published by Canadian Science Publishing in Canadian Journal of Chemistry

Vol. 64 (1) , 30-34
https://doi.org/10.1139/v86-007

Abstract

HUO2PO4•4H2O (HUP) forms a laminar intercalate with butylamine, c = 29.30(5) Å, which accepts cationic metals in exchange for the n-butylammonium ions. Hydrated uranyl metal phosphates M(UO2PO4)2•nH2O (M = Mn, Co, Ni, Cu, Zn, Cd) are obtained by ionic exchange and were studied by thermal analysis and X-ray diffraction. The tetragonal structures of all these product compounds are derived from HUP. The diffuse electronic reflectance spectra of every sample show characteristic [Formula: see text] absorption bands. In the spectra of the Co, Ni, and Cu phosphates there are other bands in the 500–800 nm zone compatible with their observed aquocation transitions.

Keywords

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