Study of La2−xCaxCuO4 perovskites for the low temperature water gas shift reaction

Maluf, S.S.; Nascente, P. A. P.; Afonso, Conrado Ramos Moreira; Assaf, Elisabete Moreira

doi:10.1016/j.apcata.2011.10.047

Cited by 24 publications

(10 citation statements)

References 35 publications

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“…The binding energy of La 3d is almost the same before and after the electrolysis, indicating La ions are not involved in the redox process (Figure S14b). In the initial La 2 CuO 4 perovskite, the binding energy of 932.7 eV corresponds to Cu 2p 3/2 (Figure a) . After the electrolysis, the Cu 2p 3/2 signal is deconvoluted into two peaks: the peak at 931.6 eV is ascribed to Cu(0) and another peak at 933.3 eV corresponds to Cu(II) for La 2 CuO 4 .…”

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confidence: 84%

“…In the initial La 2 CuO 4 perovskite, the binding energy of 932.7 eV corresponds to Cu 2p 3/2 (Figure 4a). 33 After the electrolysis, the Cu 2p 3/2 signal is deconvoluted into two peaks: the peak at 931.6 eV is ascribed to Cu(0) 34 and another peak at 933.3 eV corresponds to Cu(II) for La 2 CuO 4 . The negative shift of Cu 2p and emergence of Cu(0) suggest that the electrons are more prone to transfer at the Cu/La 2 CuO 4 interface.…”

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confidence: 95%

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Highly Selective Carbon Dioxide Electroreduction on Structure-Evolved Copper Perovskite Oxide toward Methane Production

et al. 2020

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Electrochemical carbon dioxide (CO 2 ) conversion is promising to balance the carbon cycle for human society. However, an efficient electrocatalyst is the key to determine the selective conversion of CO 2 toward valuable products. We report herein an efficient La 2 CuO 4 perovskite catalyst for electrochemical CO 2 reduction. A high Faradaic efficiency of 56.3% with a partial current density of 117 mA cm −2 is achieved for methane production over this perovskite catalyst at −1.4 V (vs RHE). The results demonstrate that the structural evolution of La 2 CuO 4 perovskite takes place simultaneously during the cathodic CO 2 reduction process. Theoretical investigations further unravel that the emerging Cu/La 2 CuO 4 interface accounts for the CO 2 methanation behaviors. This work provides an effective perovskite electrocatalyst for ambient CO 2 methanation and offers a valuable understanding of the structure evolution and surface reconstruction of precatalysts in catalytic reactions for energy-relevant technologies.

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confidence: 84%

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confidence: 95%

Highly Selective Carbon Dioxide Electroreduction on Structure-Evolved Copper Perovskite Oxide toward Methane Production

et al. 2020

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“…3. The binding energy of Cu 2p at 932.3 eV 27,28 was the distinctive feature associated with reduced species Cu + /Cu 0 . Cu LMM Auger electron spectroscopy illustrated a binding energy of 921 eV attributed to Cu 0 .…”

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confidence: 99%

Effect of Ni content on Cu–Mn/ZrO₂ catalysts for methanol synthesis from CO₂ hydrogenation

Zhang,

Yang,

Wang

et al. 2024

Catal. Sci. Technol.

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“…Maluf et al[67] evaluated the catalytic performance of La 2-x Ca x CuO 4 perovskites on the low temperature WGS reaction. They observed that all studied perovskites are active at 290 ºC, and a promoter effect of Ca is described.…”

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Low‐Temperature CO Oxidation

Laguna

Bobadilla

Hernández

2015

Perovskites and Related Mixed Oxides

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Catalytic low-temperature abatement of carbon monoxide becomes essential in environmental pollution control. CO Oxidation, CO Preferential Oxidation (PROX) and Water Gas Shift (WGS) reaction are the conventional technologies used to remove carbon monoxide at low temperature. Perovskite-type oxides have been extensively studied in the last years as catalysts for these reactions due to their high activity and catalytic stability. This chapter describes the state-of-the-art of using perovskite-based catalysts of general formula ABO 3 in these reactions. Key factors such as the type and nature of A and B ions or the formation of oxygen vacancies or interstitials by doping are discussed in the light of the reaction mechanism in each case.

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Study of La2−xCaxCuO4 perovskites for the low temperature water gas shift reaction

Cited by 24 publications

References 35 publications

Highly Selective Carbon Dioxide Electroreduction on Structure-Evolved Copper Perovskite Oxide toward Methane Production

Highly Selective Carbon Dioxide Electroreduction on Structure-Evolved Copper Perovskite Oxide toward Methane Production

Effect of Ni content on Cu–Mn/ZrO₂ catalysts for methanol synthesis from CO₂ hydrogenation

Low‐Temperature CO Oxidation

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Study of La2−xCaxCuO4 perovskites for the low temperature water gas shift reaction

Cited by 24 publications

References 35 publications

Highly Selective Carbon Dioxide Electroreduction on Structure-Evolved Copper Perovskite Oxide toward Methane Production

Highly Selective Carbon Dioxide Electroreduction on Structure-Evolved Copper Perovskite Oxide toward Methane Production

Effect of Ni content on Cu–Mn/ZrO2 catalysts for methanol synthesis from CO2 hydrogenation

Low‐Temperature CO Oxidation

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Effect of Ni content on Cu–Mn/ZrO₂ catalysts for methanol synthesis from CO₂ hydrogenation