Highly selective and stable nickel catalysts supported on ceria promoted with Sm2O3, Pr2O3 and MgO for the CO2 methanation reaction

Siakavelas, Georgios I.; Charisiou, Nikolaos D.; AlKhoori, Sara; AlKhoori, Ayesha A.; Sebastián, Víctor; Hinder, Steven J.; Baker, Mark; Yentekakis, I.V.; Polychronopoulou, Kyriaki; Goula, Maria A.

doi:10.1016/j.apcatb.2020.119562

Cited by 170 publications

(105 citation statements)

References 121 publications

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“…The activity of Ni-based catalysts can be further improved via modification of the metal oxide supports. For example, alkali and alkaline earth metals [13], transition metals [6] and rare-earth metals [14] can be used as promoters that modify the physicochemical properties of metal oxide supports. In some cases, these ions can enter the lattice of the metal oxide supports (e.g., Ca 2+ ions in CeO 2 and ZrO 2 lattices) [15], or form segregated metal oxide phases supported on the support surface (e.g., La 2 O 3 , CeO 2 and MnO x in Al 2 O 3 ) [16].…”

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: Introductionmentioning

confidence: 99%

“…Such modifications can lead to an increase in support basicity, so that the initial step of CO 2 chemisorption step is accelerated, or to an increase in the active metal dispersion [17]. In most cases, the low-temperature activity and stability of Ni-based catalysts is enhanced following modification of the metal oxide supports [13,14,16].…”

Section: Introductionmentioning

confidence: 99%

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

et al. 2020

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“… 25 Interestingly, the TOF value on Ni/W was 1.4 times higher than that on Ni/B. Moreover, the TOF value of Ni/W has advantages over the previous reported CO 2 methanation catalysts, indicating that CeO 2 as the support can effectively improve the catalytic activity at low temperature 26 . The lifetime test of Ni/W was carried out at the temperature of 400°C for 100 h (Figure S2).…”

Section: Resultsmentioning

confidence: 95%

Ni/CeO₂ catalysts for low‐temperature CO₂ methanation: Identifying effect of support morphology and oxygen vacancy

et al. 2021

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In order to investigate the effect of support morphology and oxygen vacancy on the low temperature catalytic activity of Ni‐based catalyst for CO2 methanation, three Ni/CeO2 catalysts were prepared by impregnation method, in which CeO2 materials with different morphology of flowerlike, nanowire, and bulk were used. The characterization results showed that the morphology of CeO2 exhibited a significant effect on the preferential exposed crystal planes, which led to the change of oxygen vacancy concentration and metal dispersion, resulting in the enhancement of catalytic activity at low temperature. Among all catalysts, the nanowire‐like Ni/CeO2 catalyst (Ni/W) showed the highest CO2 conversion due to its enhanced oxygen vacancy concentration and CO2 adsorption capacity of the catalyst. In situ DRIFTS experiment showed that the intermediate product of Ni/W catalyst reaction route was formate. In a 100 h–400°C–lifetime test, Ni/W catalyst also showed excellent long‐term stability. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…3D printing's effect on the metal particle size: The metal particle size or the particle size of the active phase is critical, as it can increase the reaction rate for the so called structure sensitive reactions [120,121]. It is worthy to know that metal particle sizes can be tuned during the usage of additive manufacturing technologies in order to achieve various designs and structures.…”

Section: Transferring Basic Concepts Of Catalysis Into 3d-printing Technologymentioning

confidence: 99%

A Review on New 3-D Printed Materials’ Geometries for Catalysis and Adsorption: Paradigms from Reforming Reactions and CO2 Capture

et al. 2020

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“Bottom-up” additive manufacturing (AM) is the technology whereby a digitally designed structure is built layer-by-layer, i.e., differently than by traditional manufacturing techniques based on subtractive manufacturing. AM, as exemplified by 3D printing, has gained significant importance for scientists, among others, in the fields of catalysis and separation. Undoubtedly, it constitutes an enabling pathway by which new complex, promising and innovative structures can be built. According to recent studies, 3D printing technologies have been utilized in enhancing the heat, mass transfer, adsorption capacity and surface area in CO2 adsorption and separation applications and catalytic reactions. However, intense work is needed in the field to address further challenges in dealing with the materials and metrological features of the structures involved. Although few studies have been performed, the promise is there for future research to decrease carbon emissions and footprint. This review provides an overview on how AM is linked to the chemistry of catalysis and separation with particular emphasis on reforming reactions and carbon adsorption and how efficient it could be in enhancing their performance.

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Highly selective and stable nickel catalysts supported on ceria promoted with Sm2O3, Pr2O3 and MgO for the CO2 methanation reaction

Cited by 170 publications

References 121 publications

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Ni/CeO₂ catalysts for low‐temperature CO₂ methanation: Identifying effect of support morphology and oxygen vacancy

A Review on New 3-D Printed Materials’ Geometries for Catalysis and Adsorption: Paradigms from Reforming Reactions and CO2 Capture

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Highly selective and stable nickel catalysts supported on ceria promoted with Sm2O3, Pr2O3 and MgO for the CO2 methanation reaction

Cited by 170 publications

References 121 publications

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Ni/CeO2 catalysts for low‐temperature CO2 methanation: Identifying effect of support morphology and oxygen vacancy

A Review on New 3-D Printed Materials’ Geometries for Catalysis and Adsorption: Paradigms from Reforming Reactions and CO2 Capture

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Ni/CeO₂ catalysts for low‐temperature CO₂ methanation: Identifying effect of support morphology and oxygen vacancy