Synergistic Interactions of Neighboring Platinum and Iron Atoms Enhance Reverse Water–Gas Shift Reaction Performance

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(4), P. 2264 - 2270

Published: Jan. 23, 2023

The limitations of conventional strategies in finely controlling the composition and structure demand new promotional effects for upgrading reverse water–gas shift (RWGS) catalysts enhanced fuel production. We report design synthesis a hetero-dual-site catalyst boosting RWGS performance by controllably loading Fe atoms at neighboring Pt atom on surface commercial CeO2. Fe–Pt/CeO2 exhibits remarkably high catalytic (TOFPt: 43,519 h–1) CO2 to CO conversion with ∼100% selectivity relatively low temperature 350 °C. Furthermore, retains over 80% activity after 200 h continuous operation. experimental computational investigations reveal "two-way synergistic effect", where can not only serve as promotors alter charge density but also be activated excess active hydrogen species generated atoms, enhancing stability.

Language: Английский

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A comprehensive review on photo-thermal co-catalytic reduction of CO2 to value-added chemicals

Fuel, Journal Year: 2024, Volume and Issue: 362, P. 130906 - 130906

Published: Jan. 9, 2024

Language: Английский

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Reinforcing the Efficiency of Photothermal Catalytic CO₂ Methanation through Integration of Ru Nanoparticles with Photothermal MnCo₂O₄ Nanosheets

ACS Nano, Journal Year: 2023, Volume and Issue: 17(23), P. 23761 - 23771

Published: Nov. 20, 2023

Carbon dioxide (CO2) hydrogenation to methane (CH4) is regarded as a promising approach for CO2 utilization, whereas achieving desirable conversion efficiency under mild conditions remains significant challenge. Herein, we have identified ultrasmall Ru nanoparticles (∼2.5 nm) anchored on MnCo2O4 nanosheets prospective photothermal catalysts methanation at ambient pressure with light irradiation. Our findings revealed that exhibit dual functionality substrates localized temperature enhancement and photocatalysts electron donation. As such, the optimized Ru/MnCo2O4-2 gave high CH4 production rate of 66.3 mmol gcat-1 h-1 (corresponding 5.1 mol gRu-1 h-1) 96% selectivity 230 °C irradiation (420-780 nm, 1.25 W cm-2), outperforming most reported plasmonic metal-based catalysts. The mechanisms behind intriguing catalytic performance improvement were substantiated through comprehensive investigation involving experimental characterizations, numerical simulations density functional theory (DFT) calculations, which unveiled synergistic effects enhanced charge separation efficiency, improved reaction kinetics, facilitated reactant adsorption/activation accelerated intermediate over Ru/MnCo2O4. A comparison study showed that, identical external input energy during reaction, had much higher compared Ru/TiO2 Ru/Al2O3. This underscores pivotal role played by supports believed engender heightened interest in metal conditions.

Language: Английский

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Transforming CO2 to valuable feedstocks: Emerging catalytic and technological advances for the reverse water gas shift reaction

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 487, P. 150369 - 150369

Published: March 12, 2024

Language: Английский

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Copper catalysts for CO2 hydrogenation to CO through reverse water–gas shift reaction for e-fuel production: Fundamentals, recent advances, and prospects

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 492, P. 152283 - 152283

Published: May 19, 2024

E-fuel production, which is achieved using atmospheric or biogenic CO2 and green H2, shows promise for reducing levels curtailing our reliance on fossil fuels. Notably, the hydrogenation of to CO via reverse water–gas shift (RWGS) reaction (CO2 + H2 ↔ H2O) plays a pivotal role in commercial e-fuel production. This approach preferred over direct conversion CO2, remains nascent stage. However, endothermic RWGS energy-intensive it requires high operating temperatures (∼600–800 °C). Therefore, lowering temperature can aid achieving energy efficiency; however, this restricts catalytic activity. Furthermore, low less than 400 °C favor exothermic CH4, resulting CH4 being predominant product instead during hydrogenation. Consequently, studies catalysts have focused as well selectivity low-temperature operation. Among various candidates catalysts, Cu-based are targeted herein particularly potent systems. Cu exhibit selectivity, but face issues such vulnerability sintering. review comprehensively explores from their fundamental properties (effects particle facets, size, dispersion) latest research trends, novel preparation methods (deposition–precipitation, atomic layer deposition, ion sputtering) use supports (CeO2, ZnO, Mo2C) promoters (FeOx alkali metals), future directions spinel oxides layered double hydroxides.

Language: Английский

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Designing Ni-in intermetallic alloy compounds for high activity and selectivity in low-temperature RWGS reaction

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160529 - 160529

Published: Feb. 1, 2025

Language: Английский

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Design of catalysts for selective CO2 hydrogenation

Nature Synthesis, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Language: Английский

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Boosting CO2 hydrogenation to methanol by adding trace amount of Au into Cu/ZnO catalysts

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 324, P. 122233 - 122233

Published: Nov. 28, 2022

Language: Английский

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Identifying the roles of Ce3+−OH and Ce−H in the reverse water-gas shift reaction over highly active Ni-doped CeO2 catalyst

Nano Research, Journal Year: 2022, Volume and Issue: 15(7), P. 5831 - 5841

Published: April 18, 2022

Language: Английский

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Ni Single Atoms Confined in Nitrogen-Doped Carbon Nanotubes for Active and Selective Hydrogenation of CO₂ to CO

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(10), P. 7132 - 7138

Published: May 11, 2023

Developing efficient non-precious-metal catalysts capable of selectively converting CO2 into fuels and chemicals is desirable yet remains a challenge. Ni-based usually exhibit high activity in methanation reactions but low selectivity stability the reverse water-gas shift (RWGS) reaction. Herein, we report Ni single-atom catalyst with Ni–Nx motifs confined N-doped carbon nanotubes as an active, selective, stable for RWGS reaction, achieving almost 100% CO STY 1.88 molCO gNi–1 h–1 at 500 °C atmospheric pressure. In addition to weak adsorption, strong adsorption H2 active site were found be responsible catalytic selectivity.

Language: Английский

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