Role of the nanoparticles of Cu-Co alloy derived from perovskite in dry reforming of methane

Touahra, Fouzia; Chebout, Redouane; Lerari, Djahida; Halliche, D.; Bachari, Khaldoun

doi:10.1016/j.energy.2019.01.085

Cited by 48 publications

(21 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bulk metals [8,9] and oxides [10,11], as well as supported on various types of carriers [12], are used as catalysts for the carbon dioxide conversion of methane. However, in recent years, new types of highly active catalysts made in the combustion process have appeared.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biogas Reforming over Al-Co Catalyst Prepared by Solution Combustion Synthesis Method

et al. 2021

View full text Add to dashboard Cite

The results of carbon dioxide reforming of CH4 (model biogas) on catalysts prepared by solution combustion synthesis (SCS) and impregnation of moisture capacity methods are presented. Investigation of the activity of catalysts synthesized from initial mixtures of Co(NO3)2-Al(NO3)3-urea of different compositions was carried out for the production of synthesis-gas, and SCS and traditional incipient wetness impregnation catalyst preparation methods were compared. The methane conversion reached 100%, and the conversion of CO2 increased to 86.2%, while the yield of H2 and CO was 99.2% and 85.4%, respectively, at 900 °C. It was found that CoAl2O4 spinel formation was due to substitution of Al3+ with Co2+ cations. Consequently, CoAl2O4 lattice parameters increased, since the ionic radius of Al3+ (0.51Å) less than Cο2+ (0.72 Å). Advantages of SCS catalysts in comparison with catalysts prepared by the traditional incipient wetness impregnation method in dry reforming of methane were shown. The aim of this work is to develop a new catalyst for the conversion of model biogas into synthesis gas, which will contribute to the organization of a new environmentally friendly, energy-saving production in the future.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Figure11. Effect of the catalyst preparation conditions on the yield of H2 and CO at 900 °C for the 30% Cο(ΝΟ3)2 + 70% Al(NO3)3 + 60% urea catalyst; 1-yield of H2, 2-yield of CO, GHSV-3300 h −1 .…”

mentioning

confidence: 99%

Biogas Reforming over Al-Co Catalyst Prepared by Solution Combustion Synthesis Method

et al. 2021

View full text Add to dashboard Cite

show abstract

“…CO2 + H2 → CO + H2O (5) In this regard, many efforts were devoted to improving the activity and coke-resistance of nickel-based catalysts. Among the various strategies proposed is the incorporation of other metal promoters such as Mn, Zr, La, Zn, Fe, Mg, Ce and Cu [10][11][12][13][14], alongside increasing the catalysts' surface basicity [15,16], and additional control of the active element particle size [17,18]. The addition of metal promoters had also attracted much attention from the scientific community [19].…”

Section: Ch4 Decomposition: Ch4 → C + 2h2mentioning

confidence: 99%

Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production

Djebarri

Touahra

Aider

et al. 2020

Bull. Chem. React. Eng. Catal.

Self Cite

View full text Add to dashboard Cite

Herein we study the catalytic activity/stability of a new generation of cheap and readily available Ni and Al-based catalysts using two Mn precursors, namely Mn(NO3)2 and Mn(EDTA)2- complex in the reaction of CO2 reforming of methane. In this respect, Ni/Al2O3 and two types of Ni/MnxOy-Al2O3 catalysts were successfully synthesized and characterized using various analytical techniques: TGA, ICP, XRD, BET, FTIR, TPR-H2, SEM-EDX, TEM, XPS and TPO-O2. Utilization of Mn(EDTA)2- as synthetic precursor successfully furnished Ni/Al2O3-MnxOyY (Y = EDTA) catalyst which was more active during CO2 reforming of methane when compared to Ni/MnxOy-Al2O3 catalyst, synthesized using Mn(NO3)2 precursor. Compared to Ni/MnxOy-Al2O3, Ni/Al2O3-MnxOyY catalyst afforded near-equilibrium conversion values at 700 °C (ca. 95% conversion for CH4 and CO2, and H2/CO = 0.99 over 50 h reaction time). Also, Ni/Al2O3-MnxOyY showed more resistance to carbon formation and sintering; interestingly, after 50 h reaction time, the size of Ni0 particles in Ni/MnxOy-Al2O3 almost doubled while that of Ni/Al2O3-MnxOyY remained unchanged. The elevated conversion of CO2 and CH4 in conjunction with the observed low carbon deposition on the surface of our best catalyst (Ni/Al2O3-MnxOyY) indicated the presence of MnxOy oxide positioning mediated simultaneous in-situ carbon elimination with subsequent generation of oxygen vacant sites on the surface for more CO2 adsorption. Copyright © 2020 BCREC Group. All rights reserved

show abstract

“…In total, despite the fact that the extent of exsolution, and hence the oxygen capacity, is not signicantly altered, surface particles in the porous material are smaller and somewhat more numerous which is expected to lower the temperature of the process. 32,[40][41][42] Indeed, when evaluated under methane as a function of temperature, the two materials seem to have similar oxygen capacity and selectivity ( Fig. 6c-e) but the pLCCNT material is able to activate methane at 450 C which is almost 80 C lower than the original, less porous, cobalt-based sample.…”

Section: Increasing Porosity Of Co-based Samplesmentioning

confidence: 94%

Low temperature methane conversion with perovskite-supported exo/endo-particles

et al. 2020

View full text Add to dashboard Cite

show abstract

Role of the nanoparticles of Cu-Co alloy derived from perovskite in dry reforming of methane

Cited by 48 publications

References 38 publications

Biogas Reforming over Al-Co Catalyst Prepared by Solution Combustion Synthesis Method

Biogas Reforming over Al-Co Catalyst Prepared by Solution Combustion Synthesis Method

Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production

Low temperature methane conversion with perovskite-supported exo/endo-particles

Contact Info

Product

Resources

About