Synthesis of copper-promoted CeO2 catalysts

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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Autores principales: Jobbágy, M., Mariño, F., Schönbrod, B., Baronetti, G., Laborde, M.
Formato: JOUR
Materias:
Carbonates
Copper oxides
Heat treatment
Scanning electron microscopy
Solutions
Binary oxides
Coprecipitation
Temperature-programmed reduction (TPR)
Cerium compounds
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08974756_v18_n7_p1945_Jobbagy
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_08974756_v18_n7_p1945_Jobbagy
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spelling todo:paper_08974756_v18_n7_p1945_Jobbagy2023-10-03T15:43:50Z Synthesis of copper-promoted CeO2 catalysts Jobbágy, M. Mariño, F. Schönbrod, B. Baronetti, G. Laborde, M. Carbonates Copper oxides Heat treatment Scanning electron microscopy Solutions Binary oxides Coprecipitation Temperature-programmed reduction (TPR) Cerium compounds 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. Fil:Jobbágy, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08974756_v18_n7_p1945_Jobbagy
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Carbonates
Copper oxides
Heat treatment
Scanning electron microscopy
Solutions
Binary oxides
Coprecipitation
Temperature-programmed reduction (TPR)
Cerium compounds
spellingShingle Carbonates
Copper oxides
Heat treatment
Scanning electron microscopy
Solutions
Binary oxides
Coprecipitation
Temperature-programmed reduction (TPR)
Cerium compounds
Jobbágy, M.
Mariño, F.
Schönbrod, B.
Baronetti, G.
Laborde, M.
Synthesis of copper-promoted CeO2 catalysts
topic_facet Carbonates
Copper oxides
Heat treatment
Scanning electron microscopy
Solutions
Binary oxides
Coprecipitation
Temperature-programmed reduction (TPR)
Cerium compounds
description 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.
format JOUR
author Jobbágy, M.
Mariño, F.
Schönbrod, B.
Baronetti, G.
Laborde, M.
author_facet Jobbágy, M.
Mariño, F.
Schönbrod, B.
Baronetti, G.
Laborde, M.
author_sort Jobbágy, M.
title Synthesis of copper-promoted CeO2 catalysts
title_short Synthesis of copper-promoted CeO2 catalysts
title_full Synthesis of copper-promoted CeO2 catalysts
title_fullStr Synthesis of copper-promoted CeO2 catalysts
title_full_unstemmed Synthesis of copper-promoted CeO2 catalysts
title_sort synthesis of copper-promoted ceo2 catalysts
url http://hdl.handle.net/20.500.12110/paper_08974756_v18_n7_p1945_Jobbagy
work_keys_str_mv AT jobbagym synthesisofcopperpromotedceo2catalysts
AT marinof synthesisofcopperpromotedceo2catalysts
AT schonbrodb synthesisofcopperpromotedceo2catalysts
AT baronettig synthesisofcopperpromotedceo2catalysts
AT labordem synthesisofcopperpromotedceo2catalysts
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