Crystalline ce(III)-la(III) double basic carbonates: A chemical shortcut to obtain nanometric la(III)-doped ceria

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The controlled decomposition of crystalline Ce 1-xLa x(OH)CO 3 samples to give nanocrystalline Ce 1-XLa xO 2δ solid solutions is studied as a function of temperature and La(III) content. The hexagonal basic carbonates, related to the mineral bastnaesite, are shown to be suitable precursors for the o...

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Autor principal: Jobbágy, M.
Otros Autores: Sorbello, C., Sileo, E.E
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2009
Acceso en línea:Registro en Scopus
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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100 1 |a Jobbágy, M. 
245 1 0 |a Crystalline ce(III)-la(III) double basic carbonates: A chemical shortcut to obtain nanometric la(III)-doped ceria 
260 |c 2009 
270 1 0 |m Jobbágy, M.; DQIAQF, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, C1428EHA-Buenos Aires, Argentina; email: jobbag@qi.fcen.uba.ar 
506 |2 openaire  |e Política editorial 
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520 3 |a The controlled decomposition of crystalline Ce 1-xLa x(OH)CO 3 samples to give nanocrystalline Ce 1-XLa xO 2δ solid solutions is studied as a function of temperature and La(III) content. The hexagonal basic carbonates, related to the mineral bastnaesite, are shown to be suitable precursors for the obtainment of Ce(IV-III), La(III) oxides when exposed to O 2 at mild temperatures (250 °C). The oxidation of Ce(III) centers triggers the massive decomposition of the whole precursor, acting as a chemical shortcut to achieve the domain of ceria phases, at temperatures 200 °C lower than the traditional procedures. The mixed oxides exhibit higher surface areas than those obtained for traditional coprecipitation-thermal decomposition procedures, achieving values in the range of those oxides prepared by costly surfactant-assisted methods. © 2009 American Chemical Society.  |l eng 
593 |a DQIAQF, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, C1428EHA-Buenos Aires, Argentina 
593 |a INQUlMAE, CONICET, Argentina 
593 |a Centro Interdisciplinario de Nanociencia y Nanotecnología, Argentina 
690 1 0 |a BASTNAESITE 
690 1 0 |a DOPED CERIA 
690 1 0 |a MILD TEMPERATURES 
690 1 0 |a MIXED OXIDE 
690 1 0 |a NANOCRYSTALLINE 
690 1 0 |a NANOMETRIC 
690 1 0 |a SURFACE AREA 
690 1 0 |a SURFACTANT-ASSISTED METHOD 
690 1 0 |a THERMAL DECOMPOSITIONS 
690 1 0 |a CARBONATES 
690 1 0 |a CERIUM 
690 1 0 |a CRYSTALLINE MATERIALS 
690 1 0 |a LANTHANUM 
690 1 0 |a MINING 
690 1 0 |a OXIDES 
690 1 0 |a PRECIPITATION (CHEMICAL) 
690 1 0 |a PYROLYSIS 
690 1 0 |a SURFACE ACTIVE AGENTS 
690 1 0 |a CERIUM COMPOUNDS 
700 1 |a Sorbello, C. 
700 1 |a Sileo, E.E. 
773 0 |d 2009  |g v. 113  |h pp. 10853-10857  |k n. 25  |p J. Phys. Chem. C  |x 19327447  |t Journal of Physical Chemistry C 
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856 4 0 |u https://doi.org/10.1021/jp810321y  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_19327447_v113_n25_p10853_Jobbagy  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19327447_v113_n25_p10853_Jobbagy  |y Registro en la Biblioteca Digital 
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