Evaluating metal oxide support effects on the RWGS activity of Mo<sub>2</sub>C catalysts

Holder, Cameron F.; Morse, James R.; Barboun, Patrick; Shabaev, A.; Baldwin, Jeffrey W.; Willauer, Heather D.

doi:10.1039/d3cy00026e

Cited by 8 publications

(4 citation statements)

References 86 publications

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“…The effect of the oxide support's (γ-Al 2 O 3 , SiO 2 , ZrO 2 , CeO 2 , and MgO) reducibility and acidity on Mo 2 C which promoted by K were investigate by same team. [89] The K-promoted Mo 2 C/ Al 2 O 3 catalyst demonstrated the highest CO 2 conversion at 18.2 % with a selectivity towards CO of 95.2 % at 300 °C and 19.3 bar with a mixture of N 2 , H 2 and CO 2 where the ratio of H 2 : CO 2 was 3 : 1 and N 2 , used as an internal standard, comprised 16.5 % of the gaseous mixture. The results showed that nonreducible and acidic supports, KÀ Mo 2 C/Al 2 O 3 , were the most active for the production of CO. An efficient non-noble metal catalyst, single Mo atoms anchored on N-doped porous carbon, was designed for RWGS reaction.…”

Section: Other-based Catalystmentioning

confidence: 94%

Recent Advances in Hydrogenation of CO₂ to CO with Heterogeneous Catalysts Through the RWGS Reaction

Zhang,

Sun,

Wang

et al. 2024

Chemistry An Asian Journal

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With the continuous increase in CO2 emissions, primarily from the combustion of coal and oil, the ecosystem faces a significant threat. Therefore, as an effective method to minimize the issue, Reverse Water Gas Shift (RWGS) reaction which converts CO2 towards CO attracts much attention, is an environmentally‐friendly method to mitigate climate change and lessen dependence on fossil fuels. Nevertheless, the inherent thermodynamic stability and kinetic inertness of CO2 is a big challenge under mild conditions. In addition, it remains another fundamental challenge in RWGS reaction owing to CO selectivity issue caused by CO2 further hydrogenation towards CH4. Up till now, a series of catalysis systems have been developed for CO2 and H2 reduction reaction to produce CO. Herein, the research progress of the well‐performed heterogeneous catalysts for the RWGS reaction were summarized, including the catalyst design, catalytic performance and reaction mechanism. This review will provide insight into efficient utilization of CO2 and will promote the development of RWGS reaction.

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Section: Other-based Catalystmentioning

confidence: 94%

Recent Advances in Hydrogenation of CO₂ to CO with Heterogeneous Catalysts Through the RWGS Reaction

Zhang,

Sun,

Wang

et al. 2024

Chemistry An Asian Journal

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“…Transition metal carbide catalysts (TMCs) are also promising and attractive catalysts; after the introduction of carbon, the electronic properties of these catalysts change, meaning that their activity becomes similar to that of precious metal catalysts, with a strong H 2 dissociation and CO bond-breaking ability, and showing high activity in the CO 2 hydrogenation to CO reaction. Therefore, it has been reported that catalysts such as vanadium carbide [140], tungsten carbide [141,142], cobalt carbide [143], and molybdenum carbide [126,[144][145][146][147][148][149] have superior catalytic activity and CO selectivity when applied to RWGS reactions.…”

Section: Transition Metal Carbide Catalystsmentioning

confidence: 99%

Recent Advances in the Reverse Water–Gas Conversion Reaction

Zhou,

Zhang,

et al. 2023

Molecules

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The increase in carbon dioxide emissions has significantly impacted human society and the global environment. As carbon dioxide is the most abundant and cheap C1 resource, the conversion and utilization of carbon dioxide have received extensive attention from researchers. Among the many carbon dioxide conversion and utilization methods, the reverse water–gas conversion (RWGS) reaction is considered one of the most effective. This review discusses the research progress made in RWGS with various heterogeneous metal catalyst types, covering topics such as catalyst performance, thermodynamic analysis, kinetics and reaction mechanisms, and catalyst design and preparation, and suggests future research on RWGS heterogeneous catalysts.

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“…In this context, transition metal carbides, particularly molybdenum carbides, show promise because their components are earth-abundant and because these materials can catalyze some chemical transformations with noble metal–like behavior ( 16 ). However, the synthesis of molybdenum carbide materials is either complex ( 17 , 18 ) or requires noble metals to achieve certain active phases ( 19 , 20 ).…”

mentioning

confidence: 99%

An active, stable cubic molybdenum carbide catalyst for the high-temperature reverse water-gas shift reaction

Ahmadi Khoshooei,

Wang,

Vitale

et al. 2024

Science

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Although technologically promising, the reduction of carbon dioxide (CO 2 ) to produce carbon monoxide (CO) remains economically challenging owing to the lack of an inexpensive, active, highly selective, and stable catalyst. We show that nanocrystalline cubic molybdenum carbide (α-Mo 2 C), prepared through a facile and scalable route, offers 100% selectivity for CO 2 reduction to CO while maintaining its initial equilibrium conversion at high space velocity after more than 500 hours of exposure to harsh reaction conditions at 600°C. The combination of operando and postreaction characterization of the catalyst revealed that its high activity, selectivity, and stability are attributable to crystallographic phase purity, weak CO-Mo 2 C interactions, and interstitial oxygen atoms, respectively. Mechanistic studies and density functional theory (DFT) calculations provided evidence that the reaction proceeds through an H 2 -aided redox mechanism.

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Evaluating metal oxide support effects on the RWGS activity of Mo₂C catalysts

Abstract: Mo2C supported on nonreducible metal oxides shows increased activity for the reverse water gas shift reaction compared to reducible oxides.

Cited by 8 publications

References 86 publications

Recent Advances in Hydrogenation of CO₂ to CO with Heterogeneous Catalysts Through the RWGS Reaction

Recent Advances in Hydrogenation of CO₂ to CO with Heterogeneous Catalysts Through the RWGS Reaction

Recent Advances in the Reverse Water–Gas Conversion Reaction

An active, stable cubic molybdenum carbide catalyst for the high-temperature reverse water-gas shift reaction

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Evaluating metal oxide support effects on the RWGS activity of Mo2C catalysts

Abstract: Mo2C supported on nonreducible metal oxides shows increased activity for the reverse water gas shift reaction compared to reducible oxides.

Cited by 8 publications

References 86 publications

Recent Advances in Hydrogenation of CO2 to CO with Heterogeneous Catalysts Through the RWGS Reaction

Recent Advances in Hydrogenation of CO2 to CO with Heterogeneous Catalysts Through the RWGS Reaction

Recent Advances in the Reverse Water–Gas Conversion Reaction

An active, stable cubic molybdenum carbide catalyst for the high-temperature reverse water-gas shift reaction

Contact Info

Product

Resources

About

Evaluating metal oxide support effects on the RWGS activity of Mo₂C catalysts

Recent Advances in Hydrogenation of CO₂ to CO with Heterogeneous Catalysts Through the RWGS Reaction

Recent Advances in Hydrogenation of CO₂ to CO with Heterogeneous Catalysts Through the RWGS Reaction