Transient analysis of the reverse water gas shift reaction on Cu/ZrO 2 and Ga 2 O 3 /Cu/ZrO 2 catalysts

Fornero, Esteban L.; Chiavassa, Dante L.; Bonivardi, Adrian Lionel; Baltanás, Miguel Angel

doi:10.1016/j.jcou.2017.06.002

Cited by 42 publications

(23 citation statements)

References 38 publications

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“…Ru [27], Cu [28][29][30], Fe [31,32], and Ni [33,34] have been utilized. Various supports such as CeO 2 [28,35,36] , SiO 2 [37,38] , Al 2 O 3 [39,40] , ZrO 2 [29] , TiO 2 [25,41] , zeolite [13] have been used. In addition, methanation of CO 2 , also known as Sabatier reaction is a promising strategy for the production of methane.…”

Section: Co 2 + Hmentioning

confidence: 99%

Noble-metal-free and Pt nanoparticles-loaded, mesoporous oxides as efficient catalysts for CO2 hydrogenation and dry reforming with methane

Sápi

Rajkumar

Ábel

et al. 2019

Journal of CO2 Utilization

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Section: Co 2 + Hmentioning

confidence: 99%

Noble-metal-free and Pt nanoparticles-loaded, mesoporous oxides as efficient catalysts for CO2 hydrogenation and dry reforming with methane

Sápi

Rajkumar

Ábel

et al. 2019

Journal of CO2 Utilization

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“…The CO 2 oxidizes the Cu 0 to generate Cu + and CO, while the H 2 reduces the Cu + to Cu 0 to form H 2 O; thus, the reaction conforms to a redox mechanism. When the whole catalytic process of the RWGSR is considered in detail, the mechanism of the surface redox reaction can be decomposed into the following basic steps (" * " denotes the vacancy sites) (Gines et al, 1997;Fornero et al, 2017):…”

Section: Surface Redox Mechanismmentioning

confidence: 99%

“…Realtime temporal analysis of the products confirms that a surfacereduced Au/CeO 2 catalyst can be reoxidized by exposure to CO 2 pulses and that the surface oxygen deposited in this way can be reactively removed again, which is a prerequisite for the redox mechanism in the RWGSR. Furthermore, neglecting the changes in the hydroxyls and H 2 O on the surface imposed by the presence of H 2 in the feed, the activity for active oxygen deposition is sufficient to make the redox mechanism the dominant reaction pathway (Fornero et al, 2017). Realistically, the RWGSR proceeds though a redox mechanism over Au/TiO 2 catalysts in which the existing surface hydroxyls, surface Ti 3+ , and oxygen vacancies can jointly participate in the formation of a hydroxycarbonyl intermediate, which quickly decomposes to CO (Bobadilla et al, 2018).…”

Section: Surface Redox Mechanismmentioning

confidence: 99%

Recent Advances in Supported Metal Catalysts and Oxide Catalysts for the Reverse Water-Gas Shift Reaction

Chen

Song

et al. 2020

Front. Chem.

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The reverse water-gas shift reaction (RWGSR), a crucial stage in the conversion of abundant CO 2 into chemicals or hydrocarbon fuels, has attracted extensive attention as a renewable system to synthesize fuels by non-traditional routes. There have been persistent efforts to synthesize catalysts for industrial applications, with attention given to the catalytic activity, CO selectivity, and thermal stability. In this review, we describe the thermodynamics, kinetics, and atomic-level mechanisms of the RWGSR in relation to efficient RWGSR catalysts consisting of supported catalysts and oxide catalysts. In addition, we rationally classify, summarize, and analyze the effects of physicochemical properties, such as the morphologies, compositions, promoting abilities, and presence of strong metal-support interactions (SMSI), on the catalytic performance and CO selectivity in the RWGSR over supported catalysts. Regarding oxide catalysts (i.e., pure oxides, spinel, solid solution, and perovskite-type oxides), we emphasize the relationships among their surface structure, oxygen storage capacity (OSC), and catalytic performance in the RWGSR. Furthermore, the abilities of perovskite-type oxides to enhance the RWGSR with chemical looping cycles (RWGSR-CL) are systematically illustrated. These systematic introductions shed light on development of catalysts with high performance in RWGSR.

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“…Based on reaction kinetics, spectroscopy, and density functional theory (DFT) calculations, two mechanisms of RWGS have been proposed [24][25][26][27][28][29]. One is redox mechanism: CO 2 is reduced to CO with the catalyst being oxidized directly, and then H 2 reduces the catalyst again to complete the catalytic turnover [24].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Reduction of CO2 to CO via Reverse Water Gas Shift Reaction: Recent Advances in the Design of Active and Selective Supported Metal Catalysts

Zhu

2020

Trans. Tianjin Univ.

143

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The catalytic conversion of CO 2 to CO via a reverse water gas shift (RWGS) reaction followed by well-established synthesis gas conversion technologies may provide a potential approach to convert CO 2 to valuable chemicals and fuels. However, this reaction is mildly endothermic and competed by a strongly exothermic CO 2 methanation reaction at low temperatures. Therefore, the improvement in the low-temperature activities and selectivity of the RWGS reaction is a key challenge for catalyst designs. We reviewed recent advances in the design strategies of supported metal catalysts for enhancing the activity of CO 2 conversion and its selectivity to CO. These strategies include varying support, tuning metal-support interactions, adding reducible transition metal oxide promoters, forming bimetallic alloys, adding alkali metals, and enveloping metal particles. These advances suggest that enhancing CO 2 adsorption and facilitating CO desorption are key factors to enhance CO 2 conversion and CO selectivity. This short review may provide insights into future RWGS catalyst designs and optimization.

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Transient analysis of the reverse water gas shift reaction on Cu/ZrO 2 and Ga 2 O 3 /Cu/ZrO 2 catalysts

Cited by 42 publications

References 38 publications

Noble-metal-free and Pt nanoparticles-loaded, mesoporous oxides as efficient catalysts for CO2 hydrogenation and dry reforming with methane

Noble-metal-free and Pt nanoparticles-loaded, mesoporous oxides as efficient catalysts for CO2 hydrogenation and dry reforming with methane

Recent Advances in Supported Metal Catalysts and Oxide Catalysts for the Reverse Water-Gas Shift Reaction

Catalytic Reduction of CO2 to CO via Reverse Water Gas Shift Reaction: Recent Advances in the Design of Active and Selective Supported Metal Catalysts

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