ZnO/Cr2O3 catalyst for reverse-water-gas-shift reaction of CAMERE process

Park, Sang Woo; Joo, Oh‐Shim; Jung, Kwang‐Deog; Kim, Hyo; Han, Sung‐Hwan

doi:10.1007/bf02699123

Cited by 36 publications

(20 citation statements)

References 11 publications

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“…Because CH 4 formationi st hermodynamically favored below 600 8C, these catalysts requireh ight emperatures to selectively produce CO, which also resultsi ns ubstantial deactivation. [16,17] To make fuel synthesis from CO 2 viable, al ow-cost and stable RWGS catalyst is first required, which can achieve high selectivityt oC Oo ver aw ide range of conversionsa nd operating temperatures.…”

Section: Introductionmentioning

confidence: 99%

Potassium‐Promoted Molybdenum Carbide as a Highly Active and Selective Catalyst for CO₂ Conversion to CO

et al. 2017

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The high concentration of CO bound in seawater represents a significant opportunity to extract and use this CO as a C feedstock for synthetic fuels. Using an existing process, CO and H can be concurrently extracted from seawater and then catalytically reacted to produce synthetic fuel. Hydrogenating CO directly into liquid hydrocarbons is exceptionally difficult, but by first identifying a catalyst for selective CO production through the reverse water-gas shift (RWGS) reaction, CO can then be hydrogenated to fuel through Fischer-Tropsch (FT) synthesis. Results of this study demonstrate that potassium-promoted molybdenum carbide supported on γ-Al O (K-Mo C/γ-Al O ) is a low-cost, stable, and highly selective catalyst for RWGS over a wide range of conversions. These findings are supported by X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and density functional theory calculations.

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Section: Introductionmentioning

confidence: 99%

Potassium‐Promoted Molybdenum Carbide as a Highly Active and Selective Catalyst for CO₂ Conversion to CO

et al. 2017

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“…However, despite a high initial activity, a low stability for this catalyst has been reported which was attributed to the reduction of Fe 2 O 3 to Fe metal and coke formation [58]. ZnO/Cr 2 O 3 catalyst, on the other hand, showed both high activity and stability with no coke formation.…”

Section: Conversion To Carbon Monoxidementioning

confidence: 89%

“…In the CAMERE (carbon dioxide hydrogenation to form methanol via a reverse water-gas-shift reaction) of Korean Institute of Science and Technology, CO 2 is converted to methanol [58]. In CAMERE process, carbon dioxide and hydrogen are converted to CO and H 2 O by RWGS reaction over a ZnAl 2 O 4 catalyst in a separate reactor and then the gas mixture is fed into a methanol synthesis reactor after water has been removed.…”

Section: Recent Developments and Applicationsmentioning

confidence: 99%

Carbon dioxide capture and utilization in petrochemical industry: potentials and challenges

Ravanchi¹,

Sahebdelfar²

2014

Appl Petrochem Res

109

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“…[4][5][6][7][8][9][10][11][12][13][14] The commonly accepted mechanism for the catalyzed RWGS reaction begins with the dissociative adsorption of CO 2 on the catalyst surface to form surface-bound CO and O. Likewise, H 2 dissociatively adsorbs onto the catalyst surface.…”

Section: Reverse Water-gas Shift Reactionmentioning

confidence: 99%

“…Significant research has been completed to explore the RWGS reaction over a number of catalysts including iron, nickel, cobalt, copper, zinc-oxide, and others. [4][5][6][7][8][9][10][11][12][13][14] Development of RWGS catalysts has focused on selectivity as well as temperature optimization. Similarly, significant research has been completed to explore the Boudouard reaction.…”

Section: Introductionmentioning

confidence: 99%

The Bosch Process - Performance of a Developmental Reactor and Experimental Evaluation of Alternative Catalysts

Abney

Mansell

2010

40th International Conference on Environmental Systems

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Bosch-based reactors have been in development at NASA since the 1960's. Traditional operation involves the reduction of carbon dioxide with hydrogen over a steel wool catalyst to produce water and solid carbon. While the system is capable of completely closing the loop on oxygen and hydrogen for Atmosphere Revitalization, steel wool requires a reaction temperature of 650°C or higher for optimum performance. The single pass efficiency of the reaction over steel wool has been shown to be less than 10% resulting in a high recycle stream. Finally, the formation of solid carbon on steel wool ultimately fouls the catalyst necessitating catalyst resupply. These factors result in high mass, volume and power demands for a Bosch system. I nterplanetary transportation and surface exploration missions of the moon, Mars, and near-earth objects will require higher levels of loop closure than current technology cannot provide. A Bosch system can provide the level of loop closure necessary for these long-term missions if mass, volume, and power can be kept low. The keys to improving the Bosch system lie in reactor and catalyst development.

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ZnO/Cr2O3 catalyst for reverse-water-gas-shift reaction of CAMERE process

Cited by 36 publications

References 11 publications

Potassium‐Promoted Molybdenum Carbide as a Highly Active and Selective Catalyst for CO₂ Conversion to CO

Potassium‐Promoted Molybdenum Carbide as a Highly Active and Selective Catalyst for CO₂ Conversion to CO

Carbon dioxide capture and utilization in petrochemical industry: potentials and challenges

The Bosch Process - Performance of a Developmental Reactor and Experimental Evaluation of Alternative Catalysts

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ZnO/Cr2O3 catalyst for reverse-water-gas-shift reaction of CAMERE process

Cited by 36 publications

References 11 publications

Potassium‐Promoted Molybdenum Carbide as a Highly Active and Selective Catalyst for CO2 Conversion to CO

Potassium‐Promoted Molybdenum Carbide as a Highly Active and Selective Catalyst for CO2 Conversion to CO

Carbon dioxide capture and utilization in petrochemical industry: potentials and challenges

The Bosch Process - Performance of a Developmental Reactor and Experimental Evaluation of Alternative Catalysts

Contact Info

Product

Resources

About

Potassium‐Promoted Molybdenum Carbide as a Highly Active and Selective Catalyst for CO₂ Conversion to CO

Potassium‐Promoted Molybdenum Carbide as a Highly Active and Selective Catalyst for CO₂ Conversion to CO