Elucidation of cobalt disturbance on Ni/Al2O3 in dissociating hydrogen towards improved CO2 methanation and optimization by response surface methodology (RSM)

Fatah, N.A.A.; Jalil, Aishah Abdul; Salleh, Nur Fatien Muhamad; Hamid, M.Y.S.; Hassan, Zainuddin; Nawawi, Mohd

doi:10.1016/j.ijhydene.2019.04.119

Cited by 24 publications

(17 citation statements)

References 57 publications

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“…All catalysts presented a remarkable stability upon 200 h of operation. In contrast to other works, Fatah et al [ 82 ] reported that 5% Co addition on a 5% Ni/Al 2 O 3 catalyst caused roughly a 30% drop in CO 2 conversion and lower CH 4 selectivity compared to the Ni monometallic catalyst. The deactivation was attributed to the occurrence of larger particles in the NiCo bimetallic catalyst, while an increased formation of formate intermediate species was also identified via in situ FTIR.…”

Section: Promotion With Transition Metalsmentioning

confidence: 77%

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 Transition Metalsmentioning

confidence: 77%

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

et al. 2020

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“…This mechanism was evidenced by in situ FT-IR experiments. The formates can be further hydrogenated forming CH 4 , or desorbed leading to CO and H 2 O 23,[119][120][121] . Similarly, it was demonstrated for Cu/Al 2 O 3 catalysts that the CO 2 hydrogenation reaction occurs via formates as intermediate [122][123][124][125] .…”

Section: Oxidation States In the Near-surface Regionmentioning

confidence: 99%

Boosting the performance of Ni/Al₂O₃ for the reverse water gas shift reaction through formation of CuNi nanoalloys

Gioria

Ingale

Pohl

et al. 2022

Catal. Sci. Technol.

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“…A good summary is provided in a recent review . While on more inert supports, the direct dissociation of CO 2 and the participation of formate are expected, − the adsorption of CO 2 and the formation of carbonate species on the support itself have been proposed for more basic materials. , …”

Section: Introductionmentioning

confidence: 99%

Reaction Kinetics of CO and CO₂ Methanation over Nickel

Schmider

Maier

Deutschmann

2021

Ind. Eng. Chem. Res.

125

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Methanation of both CO and CO 2 with electrolysissourced hydrogen is a key step in power-to-gas technologies with nickel as the most prominent catalyst. Here, a detailed, thermodynamically consistent reaction mechanism for the methanation reactions of CO and CO 2 over Ni-based catalysts is presented. This microkinetic model is based on the mean-field approximation and comprises 42 reactions among 19 species. The model was developed based on experiments from a number of studies in powder and monolith catalysts. These are numerically reproduced by flow field simulations coupled with the kinetic scheme. The reaction mechanism features multiple paths for the conversion of CO and CO 2 into CH 4 , including a carbide pathway and direct hydrogenation of CO 2 on the surface. The model developed describes the methanation process adequately over a wide range of temperatures, catalyst loadings, support materials, and reactant ratios. Hence, it can serve as a microkinetic basis for reaction engineering and up-scaling purposes.

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Elucidation of cobalt disturbance on Ni/Al2O3 in dissociating hydrogen towards improved CO2 methanation and optimization by response surface methodology (RSM)

Cited by 24 publications

References 57 publications

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Boosting the performance of Ni/Al₂O₃ for the reverse water gas shift reaction through formation of CuNi nanoalloys

Reaction Kinetics of CO and CO₂ Methanation over Nickel

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Elucidation of cobalt disturbance on Ni/Al2O3 in dissociating hydrogen towards improved CO2 methanation and optimization by response surface methodology (RSM)

Cited by 24 publications

References 57 publications

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Boosting the performance of Ni/Al2O3 for the reverse water gas shift reaction through formation of CuNi nanoalloys

Reaction Kinetics of CO and CO2 Methanation over Nickel

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Product

Resources

About

Boosting the performance of Ni/Al₂O₃ for the reverse water gas shift reaction through formation of CuNi nanoalloys

Reaction Kinetics of CO and CO₂ Methanation over Nickel