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Intercalation of lanthanides into H/sub 3/OUO/sub 2/PO/sub 4/ x 3H/sub 2/O and C/sub 4/H/sub 9/NH/sub 3/UO/sub 2/PO/sub 4/ x 3H/sub 2/O

Journal Article · · Inorg. Chem.; (United States)
DOI:https://doi.org/10.1021/ic00256a023· OSTI ID:6628822
The ion-exchange reactions of La/sup 3 +/, Pr/sup 3 +/, and Nd/sup 2 +/ with H/sub 3/OUO/sub 2/PO/sub 4/ x 3H/sub 2/O (HUP) and C/sub 4/H/sub 9/NH/sub 3/UO/sub 2/PO/sub 4/ x 3 H/sub 2/O (BAUP) involve a topotactic process that results in final products derived from HUP having a tetragonal structure. The infrared spectra show the gradual disappearance of the vibration band of the mobile H/sub 3/O/sup +/ (1740 cm/sup -1/) as the interacalation of the Ln/sub aq//sup 2 +/ ions proceeds. The obtained solids conform to the following compositions: La(UO/sub 2//sup 2/PO/sub 4/)/sub 3/ X 14H/sub 2/O, Pr(UO/sub 2/PO/sub 4/)/sub 3/ x 14H/sub 2/O, and Nd(UO/sub 2/PO/sub 4/)/sub 3/ x 13 H/sub 2/O. The diffuse-reflectance electron spectra for the lanthanum derivative show only the characteristic bands of the UO/sub 2//sup 2 +/ group, while in the cases of Pr/sup 3 +/ and Nd/sup 3 +/, in addition to these bands, there are others in the 500-800-nm zone that correspond to these aqueous ions.
Research Organization:
Universidad de Malaga, Spain
OSTI ID:
6628822
Journal Information:
Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 26:9; ISSN INOCA
Country of Publication:
United States
Language:
English