CO2 reforming of CH4 over La–Ni based perovskite precursors

Gallego, Germán Sierra; Mondragón, Fanor; Barrault, J.; Tatibouët, Jean‐Michel; Batiot‐Dupeyrat, Catherine

doi:10.1016/j.apcata.2006.06.024

Cited by 224 publications

(85 citation statements)

References 25 publications

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“…(430°C), and the second peak corresponds to a reduction of Ni 2? to Ni 0 (690°C) [15,16]. These observations are in agreement with the results presented in the Table 3, which shows that the peak area increased as the content of nickel in the samples increased.…”

Section: Resultssupporting

confidence: 94%

“…to Ni 0 (reactions III and IV). Thus, the La 2 NiO 4 perovskite is formed as an intermediary (reaction III) during the reduction of LaNiO 3 , and at 650°C the La 2 NiO 4 perovskite is completely reduced into metallic nickel and lanthanum oxide (reaction IV) [11,15,16]. This is in good agreement with XRD results discussed previously for the La 0.70 Sr 0.30 NiO 3 sample which showed the presence of La 2 NiO 4 structure for this sample.…”

Section: Resultssupporting

confidence: 89%

“…Gallego et al [15] reported that the reduction of La 2 NiO 4 before the reaction leads to the formation of nickel particles smaller than the particles obtained by reduction of LaNiO 3 , and the presence of such small particles would be responsible for the high activity of La 2 NiO 4 . Rynkowski et al [27] attributed the good performance of the La 2-x Sr x NiO 4 perovskite as precursor of the CH 4 reforming reaction to a change in the geometric nature of the catalyst surface, i.e., the nickel particles were split into smaller ensembles.…”

Section: Resultsmentioning

confidence: 98%

See 2 more Smart Citations

Study of Water–Gas-Shift Reaction over La(1−y)SryNixCo(1−x)O3 Perovskite as Precursors

et al. 2011

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The performance of La (1-y) Sr y Ni x Co (1-x) O 3 perovskites for the water gas shift reaction (WGSR) was investigated. The samples were prepared by the co-precipitation method and were performed by the BET method, XRD, TPR, and XPS. The catalytic tests were performed at 300 and 400°C and H 2 O v /CO = 2.3/1 (molar ratio). The sample with the highest surface area is La 0.70 Sr 0.30 NiO 3 . The XRD results showed the formation of perovskite structure for all samples, and the La 0.70 Sr 0.30 NiO 3 sample also presented peaks corresponding to La 2 NiO 4 and NiO, indicating that the solubility limit of Sr in the perovskite lattice was surpassed. The replacement of Co by Ni favored the reduction of the species at lower temperatures, and the sample containing Sr presented the highest amount of reducible species, as identified by TPR results. All samples were active, the Sr containing perovskite appearing the most active due to the highest surface area, presence of the La 2 NiO 4 phase, and higher content of Cu in the surface, as detected by XPS. Among the samples containing Co, the most active one was that with x = 0.70 (60% of CO conversion).

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Section: Resultssupporting

confidence: 94%

Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 98%

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Study of Water–Gas-Shift Reaction over La(1−y)SryNixCo(1−x)O3 Perovskite as Precursors

et al. 2011

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“…A-site에 희토류 금속(La, Gd, Pr, Nd, Er)이 B-site에는 전이금속 (Cr, Mn, Fe, Ni, Al, Co)이 각각 포함되어 있는 perovskite 산화물 (ABO 3 )은 탄화수소로부터 합성가스를 생산하는 촉매에 대해 많은 연구가 진행되어 왔다 [7][8][9][10][11][12][13][14][15][16]. Perovskite 산화물 안에 A-site의 금속은 B-site의 금속과 상호작용을 통하여 촉매 성능을 향상시키는 커다란 효과를 가진다 [9].…”

Section: 서 론unclassified

Study of Catalytic Performance of La_0.7Sr_0.3Cr_1-xNi_xO₃Perovskite for Steam Reforming of Propane

Kim¹,

Kim²,

Sohn³

2011

Korean Chemical Engineering Research

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− The La 0.7 Sr 0.3 Cr 1-x Ni x O 3 (LSCN-x) perovskites were prepared by citric acid and EDTA using a sol-gel method. The LSCN-x was characterized by BET, XRD, SEM, H 2 -TPR, EA and TEM. The catalytic performance of LSCN-x catalysts in steam reforming of propane in the temperature range 600~800 o C was investigated. Propane conversion and hydrogen yield increased with an increase in the amount of added Ni up to x=0.5 in the B-site, denoted as LSCN-0.5, under S/C=1 and S/C=1.7 reaction conditions. The LSCN-0.5 catalyst exhibited the best performance under Ni-substitution of which propane conversion and hydrogen yield was 100%, 95.9% at 800 o C in the S/C=1.7 condition, respectively. The morphology of carbon deposited on the catalysts after reaction exhibited filamentous carbon and amount of carbon deposited on the catalysts after reaction increased with an increase in the amount of added Ni.

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“…Thus, this leads to desirable properties to maintain catalytic activity and stability under the high-temperature reaction environment. The La 2 NiO 4 perovskite-type catalyst (with A 2 BO 4 structure) was found to demonstrate higher catalytic activity compared to supported Ni/La 2 O 3 or LaNiO 3 catalyst due to formation of even smaller nickel particle after reduction (Gallego et al, 2006). The reduction treatment is an important parameter to mitigate carbon deposition on the La 2 NiO 4 catalyst.…”

Section: Perovskite Catalystsmentioning

confidence: 99%

CO2 as an Oxidant for High-Temperature Reactions

Kawi

Kathiraser

2015

Front. Energy Res.

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This paper presents a review on the developments in catalyst technology for the reactions utilizing CO 2 for high-temperature applications. These include dehydrogenation of alkanes to olefins, the dehydrogenation of ethylbenzene to styrene, and finally CO 2 reforming of hydrocarbon feedstock (i.e., methane) and alcohols. Aspects on the various reaction pathways are also highlighted. The literature on the role of promoters and catalyst development is critically evaluated. Most of the reactions discussed in this review are exploited in industries and related to on-going processes, thus providing extensive data from literature. However, some reactions, such as CO 2 reforming of ethanol and glycerol, which have not reached industrial scale, are also reviewed owing to their great potential in terms of sustainability, which is essential as energy for the future. This review further illustrates the building-up of knowledge that shows the role of support and catalysts for each reaction and the underlying linkage between certain catalysts, which can be adapted for the multiple CO 2 -related reactions.

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CO2 reforming of CH4 over La–Ni based perovskite precursors

Cited by 224 publications

References 25 publications

Study of Water–Gas-Shift Reaction over La(1−y)SryNixCo(1−x)O3 Perovskite as Precursors

Study of Water–Gas-Shift Reaction over La(1−y)SryNixCo(1−x)O3 Perovskite as Precursors

Study of Catalytic Performance of La_0.7Sr_0.3Cr_1-xNi_xO₃Perovskite for Steam Reforming of Propane

CO2 as an Oxidant for High-Temperature Reactions

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CO2 reforming of CH4 over La–Ni based perovskite precursors

Cited by 224 publications

References 25 publications

Study of Water–Gas-Shift Reaction over La(1−y)SryNixCo(1−x)O3 Perovskite as Precursors

Study of Water–Gas-Shift Reaction over La(1−y)SryNixCo(1−x)O3 Perovskite as Precursors

Study of Catalytic Performance of La0.7Sr0.3Cr1-xNixO3Perovskite for Steam Reforming of Propane

CO2 as an Oxidant for High-Temperature Reactions

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Study of Catalytic Performance of La_0.7Sr_0.3Cr_1-xNi_xO₃Perovskite for Steam Reforming of Propane