Structuration of LaMnO3 perovskite catalysts on ceramic and metallic monoliths: Physico-chemical characterisation and catalytic activity in methane combustion

Arendt, Eglantine; Maione, A.; Klisińska, A.; Sánz, Oihane; Montes, Mario; Suárez, Silvia; Blanco, Jesús; Ruíz, Patricio

doi:10.1016/j.apcata.2008.01.016

Cited by 84 publications

(59 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Active phase layers deposited by dip-coating are generally homogeneously distributed over the surface of the carrier but cracks sometimes appear during drying, calcination [117] and operation. In the worst cases, the formation of deep cracks upon thermal ageing leads to the partial exfoliation of the active phase [122].…”

Section: Washcoated Unsupported Catalystsmentioning

confidence: 99%

“…A critical parameter known to influence the stability of a slurry is the size of the suspended particles. If these particles are sufficiently small (i.e., if the selected synthesis protocol produces very fine catalyst particles [121] or if an appropriate size fraction has formerly been collected through grinding and sieving [126]), they can be easily dispersed by low energy ball-milling [118,[120][121][122] or even simple stirring at room temperature [117]. Otherwise, the slurry must be submitted to high energy ball-milling in order to attain catalyst particles of the desired size, typically below 5 µm [106].…”

Section: Washcoated Unsupported Catalystsmentioning

confidence: 99%

“…The solvent of the slurry is typically water [39,117,[120][121][122][123][124] but organic solvents, such as n-butanol, are sometimes employed [62,63]. Similarly to extrusion pastes, various additives can be used to tune the rheological properties of the slurry and improve the quality of the coating.…”

Section: Washcoated Unsupported Catalystsmentioning

confidence: 99%

“…This additive, which acts in the same way as a permanent binder, prevents damage that may occur during handling of the catalyst and is eliminated during the calcination step. A peptizer, such as nitric [117,120] or citric acid [125,126] improves the dispersion of suspended particles in the slurry. A critical parameter known to influence the stability of a slurry is the size of the suspended particles.…”

Section: Washcoated Unsupported Catalystsmentioning

confidence: 99%

“…Perovskite-type materials used to prepare washcoated catalysts are generally obtained by conventional techniques such as the amorphous citrate method (CM) [106,117,118], co-precipitation [94,100,119] or flame-assisted synthesis (e.g., flame hydrolysis [118,[120][121][122]). The solvent of the slurry is typically water [39,117,[120][121][122][123][124] but organic solvents, such as n-butanol, are sometimes employed [62,63].…”

Section: Washcoated Unsupported Catalystsmentioning

confidence: 99%

See 4 more Smart Citations

Structured Perovskite-Based Catalysts and Their Application as Three-Way Catalytic Converters—A Review

et al. 2014

View full text Add to dashboard Cite

Automotive Three-Way Catalysts (TWC) were introduced more than 40 years ago. Despite that, the development of a sustainable TWC still remains a critical research topic owing to the increasingly stringent emission regulations together with the price and scarcity of precious metals. Among other material classes, perovskite-type oxides are known to be valuable alternatives to conventionally used TWC compositions and have demonstrated to be suitable for a wide range of automotive applications, ranging from TWC to Diesel Oxidation Catalysts (DOC), from NO x Storage Reduction catalysts (NSR) to soot combustion catalysts. The interest in these catalysts has been revitalized in the past ten years by the introduction of the concept of catalyst regenerability of perovskite-based TWC, which is in principle well applicable to other catalytic processes as well, and by the possibility to reduce the amounts of critical elements, such as precious metals without seriously lowering the catalytic performance. The aim of this review is to show that perovskite-type oxides have the potential to fulfil the requirements (high activity, stability, and possibility to be included into structured catalysts) for implementation in TWC.

show abstract

Section: Washcoated Unsupported Catalystsmentioning

confidence: 99%

Section: Washcoated Unsupported Catalystsmentioning

confidence: 99%

Section: Washcoated Unsupported Catalystsmentioning

confidence: 99%

Section: Washcoated Unsupported Catalystsmentioning

confidence: 99%

Section: Washcoated Unsupported Catalystsmentioning

confidence: 99%

See 3 more Smart Citations

Structured Perovskite-Based Catalysts and Their Application as Three-Way Catalytic Converters—A Review

et al. 2014

View full text Add to dashboard Cite

show abstract

Combined Use of Synchrotron‐Radiation‐Based Imaging Techniques for the Characterization of Structured Catalysts

Basile

Benito

Bugani

et al. 2010

Adv Funct Materials

View full text Add to dashboard Cite

Active-phase-coated metallic supports as structured catalysts are gaining attention in endothermic and exothermic processes because they improve heat transfer. The deposition of a well-adhered and stable catalyst layer on the metallic support constitutes an important feature for the successful application of the fi nal material. In this work, coating of FeCrAlY foams is performed by a one-step electrosynthesis-deposition of hydrotalcite-type compounds, precursors of catalysts active in endothermic steam methane reforming. The catalysts are studied at different length scales by using, for the fi rst time, a combination of several techniques: SEM/EDS and X-ray fl uorescence, X-ray powder diffraction and absorption-tomography experiments on the micro-and nanoscales at a synchrotron facility. The results show that the morphology of the coating depends on the synthesis conditions and that the catalyst may be described as Ni metal crystallites dispersed on γ -Al 2 O 3 , homogeneously coating the FeCrAlY foam.

show abstract

A Hybrid Plasma‐Catalysis System for CO₂Hydrogenation over Perovskite‐Type Catalysts: Promoting Effect of A‐Site Substitution

Zhao

et al. 2022

Energy Tech

View full text Add to dashboard Cite

A hybrid dielectric barrier discharge (DBD) plasma‐catalysis system is an effective way to catalyze the conversion of small molecules such as carbon dioxide. Until now, ABO3 perovskite catalyst used for CO2 hydrogenation to light hydrocarbons reaction has been rarely reported. Herein, the lanthanum nickel perovskite‐type catalysts named as La0.8A'0.2NiO3±δ (A' represents for Ca, Ce, Pr, Sr) are prepared by a modified nitrate citric acid method, and the influence of A‐site substitution on catalytic performance is investigated. The reactivity results show that the substitution of A‐site can improve CO2 conversion and C2–4 (hydrocarbons containing C2–C4) selectivity in varying degrees. Compared to LaNiO3 catalyst, the La0.8Ca0.2NiO3±δ catalyst has CO2 conversion increased from 72.6% to 82.3%, and C2–4 selectivity from 5.8% to 8.5%. The superior performance can be put down to the formation of smaller Ni particle size on La0.8Ca0.2NiO3±δ catalyst, which promotes the activation of H2. Additionally, the sufficient oxygen vacancies on La0.8Ca0.2NiO3±δ provide more active sites for CO2 adsorption and then enhance CO2 conversion. The hybrid DBD plasma‐catalysis system is proved effective for CO2 hydrogenation, and the idea of using A‐site substitution would serve as a guide for the modification of perovskite‐type ABO3 catalysts.

show abstract

Structuration of LaMnO3 perovskite catalysts on ceramic and metallic monoliths: Physico-chemical characterisation and catalytic activity in methane combustion

Cited by 84 publications

References 45 publications

Structured Perovskite-Based Catalysts and Their Application as Three-Way Catalytic Converters—A Review

Structured Perovskite-Based Catalysts and Their Application as Three-Way Catalytic Converters—A Review

Combined Use of Synchrotron‐Radiation‐Based Imaging Techniques for the Characterization of Structured Catalysts

A Hybrid Plasma‐Catalysis System for CO₂Hydrogenation over Perovskite‐Type Catalysts: Promoting Effect of A‐Site Substitution

Contact Info

Product

Resources

About

Structuration of LaMnO3 perovskite catalysts on ceramic and metallic monoliths: Physico-chemical characterisation and catalytic activity in methane combustion

Cited by 84 publications

References 45 publications

Structured Perovskite-Based Catalysts and Their Application as Three-Way Catalytic Converters—A Review

Structured Perovskite-Based Catalysts and Their Application as Three-Way Catalytic Converters—A Review

Combined Use of Synchrotron‐Radiation‐Based Imaging Techniques for the Characterization of Structured Catalysts

A Hybrid Plasma‐Catalysis System for CO2Hydrogenation over Perovskite‐Type Catalysts: Promoting Effect of A‐Site Substitution

Contact Info

Product

Resources

About

A Hybrid Plasma‐Catalysis System for CO₂Hydrogenation over Perovskite‐Type Catalysts: Promoting Effect of A‐Site Substitution