Precipitation of monodispersed mixed copper-gadolinium basic carbonate particles
This work describes the co-precipitation behavior of copper(III) and gadolinium(III) from solutions that become homogeneously alkaline by the forced hydrolysis of urea at 75°C. After a rather short induction period, amorphous mixed copper-gadolinium basic carbonate uniform spherical particles precip...
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1993
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paper:paper_09277757_v79_n2-3_p191_Candal2023-06-08T15:52:03Z Precipitation of monodispersed mixed copper-gadolinium basic carbonate particles Candal, Roberto Jorge Copper-gadolinium basic carbonates precipitation precursors of mixed oxides synthesis. Amorphous materials Copper compounds Gadolinium compounds Hydrolysis Precipitation (chemical) Solutions Copper gadolinium basic carbonate Coprecipitation Forced hydrolysis Induction period Spherical particles Colloids This work describes the co-precipitation behavior of copper(III) and gadolinium(III) from solutions that become homogeneously alkaline by the forced hydrolysis of urea at 75°C. After a rather short induction period, amorphous mixed copper-gadolinium basic carbonate uniform spherical particles precipitate. The average gadolinium-to-copper ratio in the resulting solids depends on the initial system composition, and is strongly influenced by aging time; particles precipitated at short aging times are richer in copper, whereas the gadolinium-to-copper ratio in the particles obtained after prolonged aging is higher than that in the starting solution. The experimental results indicate that nucleation of amorphous copper hydrous oxide promotes the formation of the mixed solid phases. The influence of each metal ion on the hydrolysis-complexation-precipitation behavior of the other is discussed. The results are used to make a general assessment of the limitations and advantages of the various possible ways of preparing precursors of mixed oxides by wet procedures. © 1993. Fil:Candal, R.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1993 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09277757_v79_n2-3_p191_Candal http://hdl.handle.net/20.500.12110/paper_09277757_v79_n2-3_p191_Candal |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Copper-gadolinium basic carbonates precipitation precursors of mixed oxides synthesis. Amorphous materials Copper compounds Gadolinium compounds Hydrolysis Precipitation (chemical) Solutions Copper gadolinium basic carbonate Coprecipitation Forced hydrolysis Induction period Spherical particles Colloids |
| spellingShingle |
Copper-gadolinium basic carbonates precipitation precursors of mixed oxides synthesis. Amorphous materials Copper compounds Gadolinium compounds Hydrolysis Precipitation (chemical) Solutions Copper gadolinium basic carbonate Coprecipitation Forced hydrolysis Induction period Spherical particles Colloids Candal, Roberto Jorge Precipitation of monodispersed mixed copper-gadolinium basic carbonate particles |
| topic_facet |
Copper-gadolinium basic carbonates precipitation precursors of mixed oxides synthesis. Amorphous materials Copper compounds Gadolinium compounds Hydrolysis Precipitation (chemical) Solutions Copper gadolinium basic carbonate Coprecipitation Forced hydrolysis Induction period Spherical particles Colloids |
| description |
This work describes the co-precipitation behavior of copper(III) and gadolinium(III) from solutions that become homogeneously alkaline by the forced hydrolysis of urea at 75°C. After a rather short induction period, amorphous mixed copper-gadolinium basic carbonate uniform spherical particles precipitate. The average gadolinium-to-copper ratio in the resulting solids depends on the initial system composition, and is strongly influenced by aging time; particles precipitated at short aging times are richer in copper, whereas the gadolinium-to-copper ratio in the particles obtained after prolonged aging is higher than that in the starting solution. The experimental results indicate that nucleation of amorphous copper hydrous oxide promotes the formation of the mixed solid phases. The influence of each metal ion on the hydrolysis-complexation-precipitation behavior of the other is discussed. The results are used to make a general assessment of the limitations and advantages of the various possible ways of preparing precursors of mixed oxides by wet procedures. © 1993. |
| author |
Candal, Roberto Jorge |
| author_facet |
Candal, Roberto Jorge |
| author_sort |
Candal, Roberto Jorge |
| title |
Precipitation of monodispersed mixed copper-gadolinium basic carbonate particles |
| title_short |
Precipitation of monodispersed mixed copper-gadolinium basic carbonate particles |
| title_full |
Precipitation of monodispersed mixed copper-gadolinium basic carbonate particles |
| title_fullStr |
Precipitation of monodispersed mixed copper-gadolinium basic carbonate particles |
| title_full_unstemmed |
Precipitation of monodispersed mixed copper-gadolinium basic carbonate particles |
| title_sort |
precipitation of monodispersed mixed copper-gadolinium basic carbonate particles |
| publishDate |
1993 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09277757_v79_n2-3_p191_Candal http://hdl.handle.net/20.500.12110/paper_09277757_v79_n2-3_p191_Candal |
| work_keys_str_mv |
AT candalrobertojorge precipitationofmonodispersedmixedcoppergadoliniumbasiccarbonateparticles |
| _version_ |
1768544873272573952 |