Enhanced catalytic behaviour of surface dispersed nickel on LaCuO 3 perovskite in the production of syngas: An expedient approach to carbon resistance during CO 2 reforming of methane

Touahra, Fouzia; Rabahi, A.; Chebout, Redouane; Boudjemaa, Amel; Lerari, Djahida; Sehailia, Moussa; Halliche, D.; Bachari, K.

doi:10.1016/j.ijhydene.2015.12.062

Cited by 45 publications

(14 citation statements)

References 39 publications

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“…The distribution of the other elements O and La, as shown by the EDX mapping, remains uniform in the fresh and spent catalysts. While this is also expected from previous studies on LaNiO3 [26,[29][30][31][32][33][34] and La2NiO4 [16,17], the observance of strong coking effects (Figure 1, Panel C) is a clear difference to LaNiO3.…”

Section: Starting From Unreduced La2nio4supporting

confidence: 85%

“…Secondly, we will put our results into literature perspective to discuss eventual similarities and differences in catalytic operation. Especially for the latter, a pile of mostly ex situ works already exists, that allows to more efficiently interpret the in situ data [16,18,[28][29][30][31][32][33][34].…”

Section: Surface Characterization By Xpsmentioning

confidence: 99%

“…The proven importance of the La2NiO4 intermediate phase during the catalytic performance of LaNiO3 directly raises the question if this concept can be generalized to similar perovskite systems. Especially La-based single perovskite materials are well-known to exhibit considerable DRM activity, mostly, but not limited to Ni-and Co-doping on the B-site [18,30,[32][33][34][41][42][43][44][45][46][47]. In principle, each metallic dopant that can be exsolved from the B site upon either hydrogen reduction or contact to the DRM mixture and which subsequently allows for efficient methane activation, would be a prospective candidate.…”

Section: Surface Characterization By Xpsmentioning

confidence: 99%

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Mechanistic in situ insights into the formation, structural and catalytic aspects of the La2NiO4 intermediate phase in the dry reforming of methane over Ni-based perovskite catalysts

Nezhad

Bekheet

Bonmassar

et al. 2021

Applied Catalysis A: General

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Section: Starting From Unreduced La2nio4supporting

confidence: 85%

Section: Surface Characterization By Xpsmentioning

confidence: 99%

Section: Surface Characterization By Xpsmentioning

confidence: 99%

See 1 more Smart Citation

Mechanistic in situ insights into the formation, structural and catalytic aspects of the La2NiO4 intermediate phase in the dry reforming of methane over Ni-based perovskite catalysts

Nezhad

Bekheet

Bonmassar

et al. 2021

Applied Catalysis A: General

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“…18 , 19 , 22 , 28 One particularly rewarding perovskite entity is the archetypical system LaNiO 3 , which has already shown very promising coking properties. 18 , 19 , 22 − 24 …”

Section: Introductionmentioning

confidence: 99%

Steering the Methane Dry Reforming Reactivity of Ni/La₂O₃ Catalysts by Controlled In Situ Decomposition of Doped La₂NiO₄ Precursor Structures

et al. 2020

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The influence of A-and/or B-site doping of Ruddlesden−Popper perovskite materials on the crystal structure, stability, and dry reforming of methane (DRM) reactivity of specific A 2 BO 4 phases (A = La, Ba; B = Cu, Ni) has been evaluated by a combination of catalytic experiments, in situ X-ray diffraction, X-ray absorption spectroscopy (XAS), X-ray photoelectron spectroscopy (XPS), and aberration-corrected electron microscopy. At room temperature, B-site doping of La 2 NiO 4 with Cu stabilizes the orthorhombic structure (Fmmm) of the perovskite, while A-site doping with Ba yields a tetragonal space group (I4/mmm). We observed the orthorhombic-to-tetragonal transformation above 170 °C for La 2 Ni 0.9 Cu 0.1 O 4 and La 2 Ni 0.8 Cu 0.2 O 4 , slightly higher than for undoped La 2 NiO 4 . Loss of oxygen in interstitial sites of the tetragonal structure causes further structure transformations for all samples before decomposition in the temperature range of 400 °C−600 °C. Controlled in situ decomposition of the parent or A/B-site doped perovskite structures in a DRM mixture (CH 4 :CO 2 = 1:1) in all cases yields an active phase consisting of exsolved nanocrystalline metallic Ni particles in contact with hexagonal La 2 O 3 and a mixture of (oxy)carbonate phases (hexagonal and monoclinic La 2 O 2 CO 3 , BaCO 3 ). Differences in the catalytic activity evolve because of (i) the in situ formation of Ni−Cu alloy phases (in a composition of >7:1 = Ni:Cu) for

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“…The transition metals have variable oxidation states and therefore they can change the oxygen mobility within the crystal lattice of the supported catalyst [38,39]. Touahra et al [40] studied cooperation of Ni metal and LaCuO3 perovskite support for the DRM. The LaCuO3 perovskite supported NiO catalyst showed high catalytic activity and stability during the DRM compared to a LaCuO3 perovskite catalyst.…”

Section: Introductionmentioning

confidence: 99%

The Ni Catalyst Supported on the FSP-made Transition Metal (Co, Mn, Cu or Zn) Doped La2O3 Material for the Dry Reforming of Methane

Aunmunkong

Chaisuk

2021

Bull. Chem. React. Eng. Catal.

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The transition metal (Co, Mn, Cu or Zn) doped La2O3 material was prepared by flame spray pyrolysis (FSP) technique. The 2 wt.% Ni catalyst supported on this material was characterized by XRD, N2 physisorption, TPR, H2 chemisorption and TGA, and evaluated by the dry reforming of methane (DRM). The perovskite structure was certainly formed when either Co or Mn was introduced. The Cu can generate the La2CuO4 spinel phase while the Zn showed a mixed phase of La2O3, ZnO and La(OH)3. The Ni/Co-La2O3 catalyst was more active for the DRM because of high amount of active dual sites of Ni and Co metals dispersed on the catalyst surface. The formation of La2O2CO3 during the reaction can inhibit the coke formation. The cooperation of La2O2CO3 and MnO phases in the Ni/Mn-La2O3 catalyst was promotional effect to decrease carbon deposits on the catalyst surface. The partial substitution of Co for Mn with a small content of Mn can enhance the catalytic activity and the product yield. The Ni/Mn0.05Co0.95-La2O3 catalyst showed the highest CH4 conversion, H2 yield and H2/CO ratio. The Mn inserted into the perovskite structure of LaCoO3 was an important player to change oxygen mobility within the crystal lattice to maintain a high performance of the catalyst. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Enhanced catalytic behaviour of surface dispersed nickel on LaCuO 3 perovskite in the production of syngas: An expedient approach to carbon resistance during CO 2 reforming of methane

Cited by 45 publications

References 39 publications

Mechanistic in situ insights into the formation, structural and catalytic aspects of the La2NiO4 intermediate phase in the dry reforming of methane over Ni-based perovskite catalysts

Mechanistic in situ insights into the formation, structural and catalytic aspects of the La2NiO4 intermediate phase in the dry reforming of methane over Ni-based perovskite catalysts

Steering the Methane Dry Reforming Reactivity of Ni/La₂O₃ Catalysts by Controlled In Situ Decomposition of Doped La₂NiO₄ Precursor Structures

The Ni Catalyst Supported on the FSP-made Transition Metal (Co, Mn, Cu or Zn) Doped La2O3 Material for the Dry Reforming of Methane

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Enhanced catalytic behaviour of surface dispersed nickel on LaCuO 3 perovskite in the production of syngas: An expedient approach to carbon resistance during CO 2 reforming of methane

Cited by 45 publications

References 39 publications

Mechanistic in situ insights into the formation, structural and catalytic aspects of the La2NiO4 intermediate phase in the dry reforming of methane over Ni-based perovskite catalysts

Mechanistic in situ insights into the formation, structural and catalytic aspects of the La2NiO4 intermediate phase in the dry reforming of methane over Ni-based perovskite catalysts

Steering the Methane Dry Reforming Reactivity of Ni/La2O3 Catalysts by Controlled In Situ Decomposition of Doped La2NiO4 Precursor Structures

The Ni Catalyst Supported on the FSP-made Transition Metal (Co, Mn, Cu or Zn) Doped La2O3 Material for the Dry Reforming of Methane

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Steering the Methane Dry Reforming Reactivity of Ni/La₂O₃ Catalysts by Controlled In Situ Decomposition of Doped La₂NiO₄ Precursor Structures