Synthesis of copper-promoted CeO2 catalysts

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The urea method is explored for a high-yield preparation of CuO-CeO 2 catalysts precursors. Solutions containing urea, Ce(NO 3)3, and Cu(NO3)3 were aged at 363 K for 5 h, achieving a quantitative coprecipitation in the form of amorphous Cu(II)-Ce(III) basic carbonates, with Cu(II) contents up to 40%...

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Detalles Bibliográficos
Autor principal: Jobbágy, M.
Otros Autores: Mariño, F., Schönbrod, B., Baronetti, G., Laborde, M.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2006
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 Synthesis of copper-promoted CeO2 catalysts 
260 |c 2006 
270 1 0 |m Jobbágy, M.; INQUIMAE, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, C1428EHA - Buenos Aires, Argentina; email: jobbag@qi.fcen.uba.ar 
506 |2 openaire  |e Política editorial 
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520 3 |a The urea method is explored for a high-yield preparation of CuO-CeO 2 catalysts precursors. Solutions containing urea, Ce(NO 3)3, and Cu(NO3)3 were aged at 363 K for 5 h, achieving a quantitative coprecipitation in the form of amorphous Cu(II)-Ce(III) basic carbonates, with Cu(II) contents up to 40%. The mixed precursors were characterized by PXRD, SEM, EDS, FTIR, and TG. Upon mild thermal treatment under air atmosphere, i.e., T = 723 K, powders were readily converted into CuO-promoted nanometric ceria. No Tenorite (CuO) segregation is observed after annealing at 873 K. The binary oxides were characterized by means of temperature-programmed reduction (TPR) and a test reaction for the preferential oxidation of carbon monoxide (CO-PROX), achieving the best performance with samples containing around 20% in copper atoms. © 2006 American Chemical Society.  |l eng 
593 |a INQUIMAE, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, C1428EHA - Buenos Aires, Argentina 
593 |a Laboratorio de Procesos Cataliticos, Facultad de Ingeniería, Ciudad Universitaria, C1428EHA - Buenos Aires, Argentina 
690 1 0 |a CARBONATES 
690 1 0 |a COPPER OXIDES 
690 1 0 |a HEAT TREATMENT 
690 1 0 |a SCANNING ELECTRON MICROSCOPY 
690 1 0 |a SOLUTIONS 
690 1 0 |a BINARY OXIDES 
690 1 0 |a COPRECIPITATION 
690 1 0 |a TEMPERATURE-PROGRAMMED REDUCTION (TPR) 
690 1 0 |a CERIUM COMPOUNDS 
700 1 |a Mariño, F. 
700 1 |a Schönbrod, B. 
700 1 |a Baronetti, G. 
700 1 |a Laborde, M. 
773 0 |d 2006  |g v. 18  |h pp. 1945-1950  |k n. 7  |p Chem. Mater.  |x 08974756  |w (AR-BaUEN)CENRE-5532  |t Chemistry of Materials 
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856 4 0 |u https://doi.org/10.1021/cm052437h  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_08974756_v18_n7_p1945_Jobbagy  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08974756_v18_n7_p1945_Jobbagy  |y Registro en la Biblioteca Digital 
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