Isotopic and in situ DRIFTS study of the CO2 methanation mechanism using Ni/CeO2 and Ni/Al2O3 catalysts

Cárdenas-Arenas, Andrea; Quindimil, Adrián; Davó‐Quiñonero, Arantxa; Bailón‐García, Esther; Lozano‐Castelló, Dolores; De‐La‐Torre, Unai; Pereda‐Ayo, Beñat; González‐Marcos, José A.; González‐Velasco, Juan R.; Bueno‐López, Agustín

doi:10.1016/j.apcatb.2019.118538

Cited by 214 publications

(163 citation statements)

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“…It has been previously mentioned that CeO 2 support can offer significant advantages regarding the CO 2 methanation performance of Ni-based catalysts, when compared with other metal oxide supports [12]. However, Fe modification of Ni catalysts supported on CeO 2 -based supports appears to exert a negative influence on CO 2 methanation.…”

Section: Promotion With Fementioning

confidence: 99%

“…Ni/CeO2 catalysts, for example, are much more active compared to Ni/Al2O3 or Ni/SiO2 catalysts. This is mainly attributed to ceria's intricate redox and O 2− -defect chemistry, with it being able to transport oxygen species and oxygen ion vacancies throughout its lattice, having higher basicity compared to other metal oxides that favours CO2 chemisorption and activation, as well as exhibiting a strong metal-support interaction that favours a higher Ni dispersion ( Figure 1) [12]. [12].…”

Section: Introductionmentioning

confidence: 99%

“…A popular method to counter some of the drawbacks of Ni-based catalysts is to use a second metal (e.g., Fe, Co or Ru) as a dopant, in order to create appropriate bimetallic [12]. Copyright: Elsevier, Amsterdam, The Netherlands, 2020.…”

Section: Introductionmentioning

confidence: 99%

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Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

et al. 2020

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CO2 methanation has recently emerged as a process that targets the reduction in anthropogenic CO2 emissions, via the conversion of CO2 captured from point and mobile sources, as well as H2 produced from renewables into CH4. Ni, among the early transition metals, as well as Ru and Rh, among the noble metals, have been known to be among the most active methanation catalysts, with Ni being favoured due to its low cost and high natural abundance. However, insufficient low-temperature activity, low dispersion and reducibility, as well as nanoparticle sintering are some of the main drawbacks when using Ni-based catalysts. Such problems can be partly overcome via the introduction of a second transition metal (e.g., Fe, Co) or a noble metal (e.g., Ru, Rh, Pt, Pd and Re) in Ni-based catalysts. Through Ni-M alloy formation, or the intricate synergy between two adjacent metallic phases, new high-performing and low-cost methanation catalysts can be obtained. This review summarizes and critically discusses recent progress made in the field of bimetallic Ni-M (M = Fe, Co, Cu, Ru, Rh, Pt, Pd, Re)-based catalyst development for the CO2 methanation reaction.

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Section: Promotion With Fementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

et al. 2020

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“…At present, the main research on indirect methanation catalyst is nickel base. [2][3][4][5][6] Ni-based catalyst is the most suitable catalyst for indirect methanation because of its low cost and high catalytic activity and stability at a space rate of tens of thousands. [7,8] However, due to the fact that Ni-based catalysts are prone to sulfur poisoning and carbon deposition, strict desulfurization and water vapor transformation processes are often required in their application.…”

Section: Introductionmentioning

confidence: 99%

“…Because Mo based catalyst can catalyze reaction under a broader hydrogen carbon ratio and has better sulfur resistance, desulfurization and water gas shift are omitted in the process flow. Methane reaction (1) and water vapor shift reaction (2) can take place simultaneously on Mobased catalyst, and the whole reaction process is carried out according to (3).…”

Section: Introductionmentioning

confidence: 99%

Methanation Performance of Unsupported MoP Catalysts Prepared with Phytic Acid under Low H₂/CO

Wang

Zhao

et al. 2020

ChemistrySelect

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In this paper, using phytic acid as the precursor, the effects of the reduction temperature and post-treatment conditions on the methanation performance of unsupported MoP catalysts were investigated. The synthesis mechanism and structureactivity relationship of the catalyst were investigated by correlation characterization, such as N 2 adsorption-desorption, XRD, Raman analysis, element analysis and XPS. At the reduction temperature of 650°C, MoP catalysts showed the higher methanation activity due to its smaller crystallite size and large specific surface area. After H 2 post-treatment at 750°C, the CO conversion increased by 16.2% because of the higher specific surface area and lower contents of the carbon and phosphorus species in MoP-750-H. The MoP-750-H catalysts show good stability without H 2 S. The sulfur-resistant methanation tests indicated that the inactivation of the catalysts was more serious with the higher H 2 S concentration, due to the sulfidation from MoP to MoS 2 .

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A Novel Method of 3D Printing High‐Loaded Oxide/H‐ZSM‐5 Catalyst Monoliths for Carbon Dioxide Reduction in Tandem with Propane Dehydrogenation

Lawson

Farsad

Adebayo

et al. 2020

Advanced Sustainable Systems

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Oxidative propane dehydrogenation using CO2 (CO2‐ODHP) is a potential alternative for propylene synthesis. In this study, bifunctional catalysts (V2O5, ZrO2, Cr2O3, and Ga2O3 doped H‐ZSM‐5) are synthesized through additive manufacturing for CO2‐ODHP. Characterization and correlation between the various characterizations and the catalytic results indicates that the direct 3D printing of metal oxides alongside H‐ZSM‐5 can considerably modify the surface properties and bulk oxide phase dispersion, thus leading to enhanced metal oxide reducibility and exceptional CO2‐ODHP performance. Among the metal monoliths, the mixed oxide sample with 5 wt% Cr, 10 wt% V, 10 wt% Zr, 10 wt% Ga and 65 wt% H‐ZSM‐5 displays the best activity, achieving ≈40% propane conversion, 95% propylene selectivity, and zero benzene/toluene/xylene production. Upon eliminating CO2, the catalyst monoliths all retain their long‐term stability; however, the propane conversions decrease by ≈3% and the propylene selectivities decreased by 5–15%. Nevertheless, all five samples examined here demonstrate exceptional catalytic activities and prolonged stabilities, which are attributed to the even distribution of surface acid sites produced by direct printing of the oxide and zeolite components. Overall, this study presents a novel way of manufacturing bifunctional structured catalysts that exhibit exceptional ODHP performance.

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Isotopic and in situ DRIFTS study of the CO2 methanation mechanism using Ni/CeO2 and Ni/Al2O3 catalysts

Cited by 214 publications

References 58 publications

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Methanation Performance of Unsupported MoP Catalysts Prepared with Phytic Acid under Low H₂/CO

A Novel Method of 3D Printing High‐Loaded Oxide/H‐ZSM‐5 Catalyst Monoliths for Carbon Dioxide Reduction in Tandem with Propane Dehydrogenation

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Isotopic and in situ DRIFTS study of the CO2 methanation mechanism using Ni/CeO2 and Ni/Al2O3 catalysts

Cited by 214 publications

References 58 publications

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Methanation Performance of Unsupported MoP Catalysts Prepared with Phytic Acid under Low H2/CO

A Novel Method of 3D Printing High‐Loaded Oxide/H‐ZSM‐5 Catalyst Monoliths for Carbon Dioxide Reduction in Tandem with Propane Dehydrogenation

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Methanation Performance of Unsupported MoP Catalysts Prepared with Phytic Acid under Low H₂/CO