Výsledky vyhledávání - "L. M. Acuña"

Physicochemical properties of nanostructured Pd/lanthanide-doped ceria spheres with high catalytic activity for CH4 combustion

Autor: Juan J. Delgado-Jaén, L. M. Acuña, Richard T. Baker, R. O. Fuentes, A. Gabriela Leyva, Huiyan Pan, Xiaowei Chen

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

In this work, nanostructured Ce0.9Gd0.1O2-δ (GDC) and Ce0.9Pr0.1O2-δ (PrDC) spheres previously obtained by microwave assisted hydrothermal homogeneous co-precipitation were impregnated with 1 wt% Pd by the incipient wetness impregnation by an aqueo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0450caa95339af75d9b0d5e0bd4306cb
https://doi.org/10.1039/c8ta00203g

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Correlation between Structural, Chemical, and Electrochemical Properties of La 0.6 Sr 0.4 CoO 3– d Nanopowders for Application in Intermediate Temperature Solid Oxide Fuel Cells

Autor: L. M. Acuña, R. O. Fuentes, Fernando F. Muñoz

Lanthanum–strontium cobaltites are excellent mixed ionic and electronic conductors and exhibit good activity for the oxygen reduction reaction (ORR) at temperatures higher than 500 °C. This led to these materials being proposed as cathodes for sol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3c412b8586db7d8c7d1e1d0633aada1
https://pubs.acs.org/doi/10.1021/acs.jpcc.6b06622

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Structural, physical and chemical properties of nanostructured nickel-substituted ceria oxides under reducing and oxidizing conditions

Autor: Filipe M.L. Figueiredo, L. M. Acuña, Nuno Sousa, R. O. Fuentes, Cecilia Albornoz, A. G. Leyva

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

This work reports the synthesis of nanostructured Ce1-xNixO2-δ (x = 0.05, 0.1, 0.15 and 0.2) oxides prepared by cation complexation route and with the main objective of studying their redox properties using a combination of electron microscopy, sync

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fab7a7f7d8ae8cd9c8078284946e7e3e
http://hdl.handle.net/10773/19321

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Electrochemical performance of nanostructured La0.6Sr0.4CoO3−δ and Sm0.5Sr0.5CoO3−δ cathodes for IT-SOFCs

Autor: R. O. Fuentes, J. Peña-Martínez, L. M. Acuña, Diego Germán Lamas, David Marrero-López, Pedro Núñez

Publikováno v: Journal of Power Sources. 196:9276-9283

The electrochemical performance of nanostructured cathodes for IT-SOFCs based on perovskite-type mixed ionic/electronic conductors (MIECs) is investigated. Different compounds (La 0.6 Sr 0.4 CoO 3− δ and Sm 0.5 Sr 0.5 CoO 3− δ ) and synthesis m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e56025432edc5d319034bf3700bd4b2b
https://doi.org/10.1016/j.jpowsour.2011.07.067

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Improvement in the Reduction Behavior of Novel ZrO2−CeO2 Solid Solutions with a Tubular Nanostructure by Incorporation of Pd

Autor: A. Gabriela Leyva, Richard T. Baker, Fernando F. Muñoz, R. O. Fuentes, Márcia Carvalho de Abreu Fantini, M.D. Cabezas, D.G. Lamas, L. M. Acuña

Publikováno v: The Journal of Physical Chemistry C. 114:19687-19696

In this work, 1 wt % Pd/ZrO2−CeO2 mixed oxide nanotubes with 90 mol % CeO2 were synthesized following a very simple, high-yield procedure and their properties were characterized by synchrotron radiation X-ray diffraction, X-ray absorption near-edge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd6e602d7ff9651f5214c301fc0540c5
https://doi.org/10.1021/jp108429t

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Local atomic structure in tetragonal pure ZrO2nanopowders

Autor: Aldo F. Craievich, I. O. Fábregas, Rogério Junqueira Prado, L. M. Acuña, R. O. Fuentes, Diego Germán Lamas, Márcia Carvalho de Abreu Fantini

Publikováno v: Journal of Applied Crystallography. 43:227-236

The local atomic structures around the Zr atom of pure (undoped) ZrO 2 nanopowders with different average crystallite sizes, ranging from 7 to 40 nm, have been investigated. The nanopowders were synthesized by different wet-chemical routes, but all e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97588a252d8520004a019cf76d2f545c
https://doi.org/10.1107/s0021889809054983

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Formation and Structural Properties of Ce−Zr Mixed Oxide Nanotubes

Autor: D.G. Lamas, L. M. Acuña, Joaquín Sacanell, María G. Zimicz, Richard T. Baker, R. O. Fuentes, A. Gabriela Leyva

Publikováno v: Chemistry of Materials. 20:7356-7363

In this work, ZrO2−CeO2 mixed oxide nanotubes with 50, 70, and 90 mol % CeO2 were synthesized following a very simple, high yield procedure, and their properties were characterized by synchrotron radiation XRD and by high resolution electron micros

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e2d468236ce9295d358ff156561d5bbb
https://doi.org/10.1021/cm801680c

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Crystal structure and local order of nanocrystalline zirconia-based solid solutions

Autor: Márcia Carvalho de Abreu Fantini, N E Walsoee de Reca, Diego Germán Lamas, L. M. Acuña, Aldo F. Craievich, I. O. Fábregas, R.J. Prado

Publikováno v: Powder Diffraction. 23:S46-S55

Crystal and local structures (long- and short-range order, respectively) of four nanocrystalline zirconia-based solid solutions—ZrO2-6 and 16 mol % CaO and ZrO2-2.8 and 12 mol % Y2O3—synthesized by a pH-controlled nitrate-glycine gel-combustion p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f89a702fc5ea355b32c8476767d77822
https://doi.org/10.1154/1.2903503

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