CO2 reforming of methane over supported LaNiO3 perovskite-type oxides

Rabelo‐Neto, Raimundo C.; Sales, Helder Belato Espindola; Inocêncio, Carlos V. M.; Varga, Erika; Oszkó, A.; Erdöhelyi, András; Noronha, Fábio B.; Mattos, Lisiane V.

doi:10.1016/j.apcatb.2017.09.022

Cited by 173 publications

(81 citation statements)

References 56 publications

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“…LaNiO 3 are considered suitable alternative for conventional Ni‐based catalysts in methane reforming reaction because of its well dispersed metallic particles, high catalytic activity, increase in hydrogen formation, stability under various operating conditions and prevention coke deposition . LaNiO 3 perovskite has been widely used in dry reforming of methane by different scholars, while the perovskite type was seldom studied for SMR . LaNiO 3 perovskite‐type oxide was prepared by using a spray pyrolysis method for SMR reaction .…”

Section: Introductionsupporting

confidence: 60%

“…A remarkable effort performed to examine kinetic models of SMR since the 1950s . The kinetic models of SMR reaction have been suggested over various ranges of temperature and pressure . The first kinetic model for SMR was proposed over a reduced nickel catalyst in the temperature range of 336°C‐638°C assuming the surface decomposition of methane is the rate determining step .…”

Section: Introductionmentioning

confidence: 99%

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Steam methane reforming on LaNiO ₃ perovskite‐type oxide for syngas production, activity tests, and kinetic modeling

Mosayebi

Nasabi

2020

Int J Energy Res

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The kinetic experiments at various working conditions (ie, temperature: 500 C-900 C, pressure: 1-15 bar, H 2 O/CH 4 ratio [S/C ratio] of 1-2.5, and gas hourly space velocity of 900-1700 1/h) in the presence of LaNiO 3 perovskitetype oxide were done to consider and assess the outcome of steam methane reforming (SMR) and to build up its kinetic models depending on Langmuir-Hinshelwood method in a fixed bed reactor. The outcomes demonstrate, the methane conversion, H 2 and CO yields and formed CO 2 are affected by the working parameters. Elevated temperature is profitable for more methane conversion, H 2 and CO yield. While high temperature has a negative effect on mol % of CO 2 in outlet products. The high working pressure will not profit SMR respect to CH 4 conversion and products distribution. The efficacy of S/C ratio on the CH 4 conversion and CO yield depended on temperature range. H 2 yield considerably diminishes with an increment in S/C ratio, while the trend was reverse for CO 2 value in outlet gas. The accuracy of suggested kinetic model was evaluated by correlation and statistical tests. Outcomes exhibited that the obtained data were well anticipated through the suggested model, owning to presumption of nonideal gas phase and by utilizing reasonable equation of state of PPR78. K E Y W O R D S CH 4 conversion, H 2 and CO yields, kinetic model, LaNiO 3 perovskite-type oxide, steam methane reforming

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Section: Introductionsupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Steam methane reforming on LaNiO ₃ perovskite‐type oxide for syngas production, activity tests, and kinetic modeling

Mosayebi

Nasabi

2020

Int J Energy Res

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“…For the unsupported LNO‐C‐650 sample, there are one weak desorption peak at around 308 °C and two strong peaks at 437 and 552 °C, respectively. The two former H 2 consumption peaks at 308 and 437 °C correspond to the weak interaction of NiO with the support, as evidenced shown by its large Ni particle size in Table . The latter one at 552 °C corresponds to the middle interaction between NiO and support (Figure a).…”

Section: Resultsmentioning

confidence: 90%

“…The asymmetric O 1s XPS spectral can be divided into two symmetrical peaks positioned at 531.15 and 533.19 eV (Figure c). The peak at 533.19 eV is assigned to the lattice oxygen (O lat ), which is derived from the LaO bond . After 700 °C reduction, this peak shifted to a lower value at 533.06 eV, indicating that the La 3+ /La 2+ redox can also change the electronic environment of O 1s.…”

Section: Resultsmentioning

confidence: 99%

“…To address the aforementioned problem, a particularly attractive way is the utilization of perovskite type oxides (PTOs) as precursors, which have high thermal stabilities and relative low costs . In particular, perovskites have been used as heterogeneous catalysts for many high‐temperature reactions, such as CO 2 reforming of methane and steam reforming of ethanol . Unfortunately, the PTOs synthesized via conventional procedures exhibit rather low surface areas, generally below 10 m 2 g −1 , which strongly restrict the applications of these materials as catalysts.…”

Section: Introductionmentioning

confidence: 99%

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Perovskite LaNiO₃ Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO₂ Methanation

Zhang

Liu

2020

Energy Tech

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To simultaneously obtain high catalytic activity and stability, LaNiO3‐based catalysts supported on mesostructured cellular foam (MCF) silica are prepared by a citric acid–assisted impregnation method and applied for a CO2 methanation reaction. These MCF‐supported perovskite LaNiO3 (LaNiO3/MCF) samples are characterized by nitrogen adsorption, X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, H2‐temperature‐programmed reduction, and X‐ray photoelectron spectroscopy. The results indicate that these catalysts offer highly dispersed La2O3 and metallic Ni nanoparticles with intimate contact inside the pores of MCF support after reduction in H2 flow. Compared with the catalyst prepared by the coimpregnation method (30LNOM‐Im‐650), the citric acid–assisted LaNiO3/MCF (30LNOM‐C‐650) catalyst exhibits a much higher catalytic activity due to its higher Ni dispersion and stronger interrelationship between La2O3 and Ni species. In the 100 h‐lifetime test under the conditions of 450 °C, 0.1 MPa, and a high weight hourly space velocity of 60 000 mL g−1 h−1, 30LNOM‐C‐650 also shows a high long‐term stability without Ni sintering, which is attributed to the formation of enhanced interaction between metallic Ni and La2O3 via La2O2CO3 species on their interface as well as the confinement effect of the MCF support.

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Enhanced OER Performance and Dynamic Transition of Surface Reconstruction in LaNiO₃ Thin Films with Nanoparticles Decoration

et al. 2023

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In an electrocatalytic process, the cognition of the active phase in a catalyst has been regarded as one of the most vital issues, which not only boosts the fundamental understanding of the reaction procedure but also guides the engineering and design for further promising catalysts. Here, based on the oxygen evolution reaction (OER), the stepwise evolution of the dominant active phase is demonstrated in the LaNiO3 (LNO) catalyst once the single‐crystal thin film is decorated by LNO nanoparticles. It is found that the OER performance can be dramatically improved by this decoration, and the catalytic current density at 1.65 V can be enhanced by ≈1000% via ≈109 cm−2 nanoparticle adhesion after extracting the contribution of surface enlargement. Most importantly, a transition of the active phase from LNO to NiOOH via surface reconstruction with the density of LNO nanoparticles is demonstrated. Several mechanisms in terms of this active phase transition are discussed involving lattice orientation‐induced change of the surface energy profile, the lattice oxygen participation, and the A/B‐site ions leaching during OER cycles. This study suggests that the active phases in transition metal‐based OER catalysts can transform with morphology, which should be corresponding to distinct engineering strategies.

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CO2 reforming of methane over supported LaNiO3 perovskite-type oxides

Cited by 173 publications

References 56 publications

Steam methane reforming on LaNiO ₃ perovskite‐type oxide for syngas production, activity tests, and kinetic modeling

Steam methane reforming on LaNiO ₃ perovskite‐type oxide for syngas production, activity tests, and kinetic modeling

Perovskite LaNiO₃ Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO₂ Methanation

Enhanced OER Performance and Dynamic Transition of Surface Reconstruction in LaNiO₃ Thin Films with Nanoparticles Decoration

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CO2 reforming of methane over supported LaNiO3 perovskite-type oxides

Cited by 173 publications

References 56 publications

Steam methane reforming on LaNiO 3 perovskite‐type oxide for syngas production, activity tests, and kinetic modeling

Steam methane reforming on LaNiO 3 perovskite‐type oxide for syngas production, activity tests, and kinetic modeling

Perovskite LaNiO3 Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO2 Methanation

Enhanced OER Performance and Dynamic Transition of Surface Reconstruction in LaNiO3 Thin Films with Nanoparticles Decoration

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Steam methane reforming on LaNiO ₃ perovskite‐type oxide for syngas production, activity tests, and kinetic modeling

Steam methane reforming on LaNiO ₃ perovskite‐type oxide for syngas production, activity tests, and kinetic modeling

Perovskite LaNiO₃ Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO₂ Methanation

Enhanced OER Performance and Dynamic Transition of Surface Reconstruction in LaNiO₃ Thin Films with Nanoparticles Decoration