INFIQC 05475
INSTITUTO DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Unidad Ejecutora - UE
artículos
Título:
Chromate intercalation in NiZn layered hydroxide salts
Autor/es:
RICARDO ROJAS; M. ÁNGELES ULIBARRI; CRISTOBALINA BARRIGA; VICENTE RIVES
Revista:
APPLIED CLAY SCIENCE
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: AMSTERDAM ; Año: 2010 vol. 49 p. 176 - 181
ISSN:
0169-1317
Resumen:
An acetate intercalated Ni-Zn layered hydroxide salt (LHS) was exchanged with chromate anions, achieving a rather large oxometalate concentration, which almost completely balanced the positive charges of the layers, as concluded from element chemical analysis, powder X ray diffraction, and FT-IR spectroscopy results.
Thermal decomposition of the solid leaded to dehydration and chromate anion grafting, followed by dehydroxylation of the host and reduction of the chromate anions. The solid then lost the layer structure, forming solids with large micro and mesoporosity, which corresponded to poorly crystallized (Zn, Ni)-Cr spinels, as well as nickel and zinc oxides.
