Study on Cu-Fe/CeO2 bimetallic catalyst for reverse water gas shift reaction

Chen, Liang; Wu, Dirui; Wang, Chengzhang; Ji, Mengxin; Wu, Zhengshun

doi:10.1016/j.jece.2021.105183

Cited by 19 publications

(19 citation statements)

References 18 publications

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“…Fe-based materials were often applied as promoter to improve the thermal stability and catalytic activity of RWGS catalysts. 8,11,30,[33][34][35] On the one hand, the Fe-base promoter exhibits much better dispersity than the active phase of Cu (which can be evidenced by the characterization of TEM and elemental mapping of CuO x &FeO y /MAO, Fig. 3).…”

Section: Resultsmentioning

confidence: 98%

“…7 As summarized in Table 1, the CO selectivity of Cu-based catalyst is close to 100%. [8][9][10][11] Hydrocarbons such as CH 4 is nearly impossible to form, 7,12 even under H 2 -rich condition (H 2 > 99 vol.%). 13 The RWGS reaction is mildly endothermic ( =42.1 kJ mol −1 ) 3 , 𝐻 ⊖ 298 the higher reaction temperature is beneficial for promoting the catalytic efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…7 As summarized in Table 1, the CO selectivity of Cubased catalyst is close to 100%. [8][9][10][11] Hydrocarbons such as CH 4 are nearly impossible to form, 7,12 even under H 2 -rich conditions (H 2 > 99 vol%). 13 The RWGS reaction is mildly endothermic (DH .…”

Section: Introductionmentioning

confidence: 99%

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Photothermal synthesis of a CuO_x&FeO_y catalyst with a layered double hydroxide-derived pore-confined frame to achieve photothermal CO₂ hydrogenation to CO with a rate of 136 mmol min⁻¹ g_cat⁻¹

Song

Ouyang

et al. 2022

Nanoscale Adv.

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Photothermal synthesis of a CuO_x&FeO_y catalyst with a layered double hydroxide-derived pore-confined frame to achieve photothermal CO₂ hydrogenation to CO with a rate of 136 mmol min⁻¹ g_cat⁻¹

Song

Ouyang

et al. 2022

Nanoscale Adv.

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“…FeCu/CeO 2 was 100% selective to CO and improved the catalytic stability . Fe/CeO 2 doped with 0.1 g g –1 Cu and 0.05 g g –1 Fe reached theoretical CO 2 conversion at 750 °C, and no carbon was detected on the surface . XRD indicated that Cu + was oxidized to Cu 2+ after the reaction, while the low amount of Fe was undetected.…”

Section: The Role Of Support Materialsmentioning

confidence: 98%

“…65 Fe/ CeO 2 doped with 0.1 g g −1 Cu and 0.05 g g −1 Fe reached theoretical CO 2 conversion at 750 °C, and no carbon was detected on the surface. 157 XRD indicated that Cu + was oxidized to Cu 2+ after the reaction, while the low amount of Fe was undetected. A 50% Fe 2 O 3 /CuO on CeO 2 /Al 2 O 3 support with a Fe/Cu ratio of 0.25:0.75 converted CO 2 at 50% with a CO selectivity of >98% for >40 h at 450 °C and a H 2 /CO 2 ratio of 4:1.…”

Section: The Role Of Support Materialsmentioning

confidence: 99%

Experimental and Computational Synergistic Design of Cu and Fe Catalysts for the Reverse Water–Gas Shift: A Review

et al. 2022

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Strategies to capture and sequester ever-increasing anthropogenic CO2 emissions include adsorbing CO2 onto inorganic substrates and then storing it in reservoirs, changing land use to promote forestry, and converting CO2 to chemicals and fuels. The reverse water–gas shift (RWGS) reaction is a conversion strategy for producing CO from CO2 that provides the highest technology readiness level. Cu and alkali metals promote CO2 adsorption, Fe improves the thermal stability, and reducible supports like CeO2 accelerate the reaction rate. Density functional theory (DFT) is a practical modeling tool for evaluating the catalytic properties of materials at the atomic scale. The active phases of the Cu- and Fe-based catalysts, the effect of bimetallic compositions, the presence of promotors, and the influence of the support material are evaluated using observations from DFT simulations and experimental data. An optimal RWGS catalyst favors (1) CO2 adsorption, (2) the dissociation of CO2 or intermediate carbonate species to CO, and (3) CO desorption. Typically, a single-component catalytic plane is unfavorable for all these criteria, thus necessitating the design of an optimal multicomponent RWGS catalyst. Future DFT research is directed toward multifacet catalytic systems to understand the structural configuration of a highly active RWGS system. Experimental and characterization results complement DFT studies in the design of the optimal RWGS catalyst. Machine learning trained by literature data provides an automated approach for the inverse design of high-performance, stable, and economic catalysts for the RWGS reaction. This review encompasses experimental and computational approaches to understand the activity of RWGS catalysts.

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Redox Behavior of In−O−Ti Interface for Selective Hydrogenation of CO₂ to CO in Doped In−TiO₂ Catalyst

2023

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In the CO 2 hydrogenation reaction, selective synthesis of CO at low temperature and high pressure is needed to integrate the reverse water gas shift reaction with Fischer-Tropsch synthesis.Here, we show that a mixed oxide catalyst prepared by doping indium (In) into TiO 2 produces CO with the formation rate of 22 μmol g À 1 s À 1 . The CO selectivity was more than 99 % at 350 °C and 3 MPa pressure. Moreover, the catalyst was durable for over 100 h on stream. During reaction the interfacial In 3 + À OÀ Ti 4 + sites were first reduced in presence of H 2 and then oxidized back with CO 2 producing CO. Because of the redox mechanism, the formation of methanol and methane was limited. This study shows the development of a promoter-free oxide catalyst for CO 2 hydrogenation and the importance of the redox property at the oxide interface for selective hydrogenation of CO 2 to CO under unfavorable conditions.

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Study on Cu-Fe/CeO2 bimetallic catalyst for reverse water gas shift reaction

Cited by 19 publications

References 18 publications

Photothermal synthesis of a CuO_x&FeO_y catalyst with a layered double hydroxide-derived pore-confined frame to achieve photothermal CO₂ hydrogenation to CO with a rate of 136 mmol min⁻¹ g_cat⁻¹

Photothermal synthesis of a CuO_x&FeO_y catalyst with a layered double hydroxide-derived pore-confined frame to achieve photothermal CO₂ hydrogenation to CO with a rate of 136 mmol min⁻¹ g_cat⁻¹

Experimental and Computational Synergistic Design of Cu and Fe Catalysts for the Reverse Water–Gas Shift: A Review

Redox Behavior of In−O−Ti Interface for Selective Hydrogenation of CO₂ to CO in Doped In−TiO₂ Catalyst

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Study on Cu-Fe/CeO2 bimetallic catalyst for reverse water gas shift reaction

Cited by 19 publications

References 18 publications

Photothermal synthesis of a CuOx&FeOy catalyst with a layered double hydroxide-derived pore-confined frame to achieve photothermal CO2 hydrogenation to CO with a rate of 136 mmol min−1 gcat−1

Photothermal synthesis of a CuOx&FeOy catalyst with a layered double hydroxide-derived pore-confined frame to achieve photothermal CO2 hydrogenation to CO with a rate of 136 mmol min−1 gcat−1

Experimental and Computational Synergistic Design of Cu and Fe Catalysts for the Reverse Water–Gas Shift: A Review

Redox Behavior of In−O−Ti Interface for Selective Hydrogenation of CO2 to CO in Doped In−TiO2 Catalyst

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Photothermal synthesis of a CuO_x&FeO_y catalyst with a layered double hydroxide-derived pore-confined frame to achieve photothermal CO₂ hydrogenation to CO with a rate of 136 mmol min⁻¹ g_cat⁻¹

Photothermal synthesis of a CuO_x&FeO_y catalyst with a layered double hydroxide-derived pore-confined frame to achieve photothermal CO₂ hydrogenation to CO with a rate of 136 mmol min⁻¹ g_cat⁻¹

Redox Behavior of In−O−Ti Interface for Selective Hydrogenation of CO₂ to CO in Doped In−TiO₂ Catalyst