Cu supported on various oxides as a candidate catalyst for dry methane reforming in DIR-SOFCs systems

Mizera, Adrian; Błaszczak, Patryk; Bochentyn, Beata; Lach, Radosław; Drożdż, Ewa

doi:10.1016/j.ijhydene.2022.06.016

Cited by 10 publications

(6 citation statements)

References 56 publications

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“…[2] Thus, many researchers have turned to ceria-based anodes modified with transition metals, since these materials exhibit ionic and electronic conductivity in reducing atmospheres, and excellent catalytic properties for the combustion of hydrocarbons. [3][4][5][6] Ni supported on ceria or ceria zirconia mixed oxides are active materials for electro catalysis, and, in order to provide a good level of electronic conductivity to the anode of SOFC, the Ni°c ontent is usually 50 vol %. For methane-fueled SOFCs, high nickel content represents a problem due to carbon deposition, which may lead to catalyst deactivation.…”

Section: Introductionmentioning

confidence: 99%

“…Materials used as anodes in SOFCs should fulfill special requirements such as having a stable microstructure, good levels of ionic and electronic conductivity, and high catalytic activity at reduced temperatures [2] . Thus, many researchers have turned to ceria‐based anodes modified with transition metals, since these materials exhibit ionic and electronic conductivity in reducing atmospheres, and excellent catalytic properties for the combustion of hydrocarbons [3–6] . Ni supported on ceria or ceria zirconia mixed oxides are active materials for electro catalysis, and, in order to provide a good level of electronic conductivity to the anode of SOFC, the Ni° content is usually 50 vol %.…”

Section: Introductionmentioning

confidence: 99%

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Phase Relationship and Ni Solubility in Nanoparticles of Ce_0.9Zr_0.1O₂

Zimicz,

Castillo,

Prado

et al. 2024

ChemistrySelect

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The phase relationship, defect formation, and incorporation of Ni in Ce0.9Zr0.1O2 have been investigated in samples of nominal composition (Ce0.9Zr0.1)1‐xNixO2‐δ with x=0.03, 0.05 and 0.1, synthesized by a cation complexation route and heat treated at 600, 800 and 1000 °C. Several structural (XRD, XAS, HRTEM) and spectroscopic (XPS, Raman) techniques have been used. Our data show the lattice parameters determined from XRD do not significantly vary with the Ni content or annealing temperature. The increasing defect concentration with increasing Ni content revealed by Raman spectra was associated to the formation of oxygen vacancies in the bulk due to coexistence of NiO and Ce0.9Zr0.1O2. On the other hand, no variation in the oxygen vacancies concentration was detected at the surface with increasing the Ni content by XPS data. In those samples with the lowest Ni concentrations (3 and 5 %) and heat treated at 600 °C, the analysis of the EXAFS zone of the K‐edge of Ni indicates that local order around Ni cations is not long‐range, suggesting the presence of a noncrystalline phase. When the Ni content is higher (10 %) and/or the temperature of the thermal treatment is increased, the crystallization of NiO is clearly detected by XRD, EXAFS and HRTEM.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phase Relationship and Ni Solubility in Nanoparticles of Ce_0.9Zr_0.1O₂

Zimicz,

Castillo,

Prado

et al. 2024

ChemistrySelect

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“…It is a strongly endothermic reaction favored at high temperatures (≥800 • C) and produces a mixture of H 2 and CO (syngas) with a molar ratio close to unity. Thus, the DRM reaction represents the ideal route for producing renewable hydrogen from biogas [3,4].…”

Section: Introductionmentioning

confidence: 99%

Structured Catalyst for Indirect Internal Reforming (IIR) of Biogas in Solid Oxide Fuel Cell (SOFC)

Prioriello,

Duranti,

Luisetto

et al. 2023

Catalysts

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The aim of this work is the development of a structured catalyst for the dry reforming of biogas to be used as a pre–reformer in the indirect internal reforming configuration (IIR) of solid oxide fuel cells (SOFCs). The structured catalyst is based on NiCrAl foams coated with ruthenium (nominal loading 3.0 wt%) supported on a CaZr0.85Sm0.15O3−δ (CZS) perovskite oxide. The powder is produced by solution combustion synthesis and deposited on metallic foams by the wash–coating method. Catalytic tests for the dry reforming of methane (DRM) reaction are carried out at 850 °C, 700 °C and 550 °C for an overall 50 h with CH4/CO2 = 1 and p = 1.3 bar at different gas hourly space velocities (GHSVs). The final goal is a proof–of–concept: a laboratory validation of an IIR–SOFC fed by biogas. The carbon amount on spent structured catalysts is evaluated by thermogravimetric analysis and microstructural/compositional investigation.

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“…Our study highlights the importance of the interfacial sites in a ZrO 2 /Cu(111) catalyst when enabling an active and selective MWR process near room temperature. It adds to recent works focused on methane activation under mild conditions and low energy costs. ,,,,, As shown in Figure , the gas pressure can have a strong impact on the MWR process: High pressure will imply a high operation temperature, and the configuration of the catalyst always must be taken into account to have ZrO 2 nanoparticles in contact with copper. , …”

mentioning

confidence: 97%

“…It adds to recent works focused on methane activation under mild conditions and low energy costs. 2,4,11,12,14,32 As shown in Figure 1, the gas pressure can have a strong impact on the MWR process: High pressure will imply a high operation temperature, 33 and the configuration of the catalyst always must be taken into account to have ZrO 2 nanoparticles in contact with copper. 24,34…”

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Activation and Conversion of Methane to Syngas over ZrO₂/Cu(111) Catalysts near Room Temperature

et al. 2023

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Enzymatic systems achieve the catalytic conversion of methane at room temperature under mild conditions. In this study, varying thermodynamic and kinetic parameters, we show that the reforming of methane by water (MWR, CH 4 + H 2 O → CO + 3H 2 ) and the water−gas shift reaction (WGS, CO + H 2 O → H 2 + CO 2 ), two essential processes to integrate fossil fuels toward a H 2 energy loop, can be achieved on ZrO 2 /Cu(111) catalysts near room temperature. Measurements of ambient-pressure X-ray photoelectron spectroscopy and mass spectrometry, combined with density functional calculations and kinetic Monte Carlo simulations, were used to study the behavior of the inverse oxide/metal catalysts. The superior performance is associated with a unique zirconia−copper interface, where multifunctional sites involving zirconium, oxygen, and copper work coordinatively to dissociate methane and water at 300 K and move forward the MWR and WGS processes.

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Cu supported on various oxides as a candidate catalyst for dry methane reforming in DIR-SOFCs systems

Cited by 10 publications

References 56 publications

Phase Relationship and Ni Solubility in Nanoparticles of Ce_0.9Zr_0.1O₂

Phase Relationship and Ni Solubility in Nanoparticles of Ce_0.9Zr_0.1O₂

Structured Catalyst for Indirect Internal Reforming (IIR) of Biogas in Solid Oxide Fuel Cell (SOFC)

Activation and Conversion of Methane to Syngas over ZrO₂/Cu(111) Catalysts near Room Temperature

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Cu supported on various oxides as a candidate catalyst for dry methane reforming in DIR-SOFCs systems

Cited by 10 publications

References 56 publications

Phase Relationship and Ni Solubility in Nanoparticles of Ce0.9Zr0.1O2

Phase Relationship and Ni Solubility in Nanoparticles of Ce0.9Zr0.1O2

Structured Catalyst for Indirect Internal Reforming (IIR) of Biogas in Solid Oxide Fuel Cell (SOFC)

Activation and Conversion of Methane to Syngas over ZrO2/Cu(111) Catalysts near Room Temperature

Contact Info

Product

Resources

About

Phase Relationship and Ni Solubility in Nanoparticles of Ce_0.9Zr_0.1O₂

Phase Relationship and Ni Solubility in Nanoparticles of Ce_0.9Zr_0.1O₂

Activation and Conversion of Methane to Syngas over ZrO₂/Cu(111) Catalysts near Room Temperature