Construction of Active Rh–TiO_x Interfacial Sites on RhFeO_x/P25 for Highly Efficient Hydrogenation of CO₂ to Ethanol

ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 17582 - 17597

Published: Nov. 14, 2024

Hydrogenation of CO2 to ethanol is an efficient process for the utilization along with production value-added chemicals. However, hydrogenation a complicated reaction, requiring catalyst activate efficiently and accurately regulate C–C coupling achieve high selectivity simultaneously. Herein, we report synthesis RhFeOx catalysts supported on TiO2 different crystal phase compositions (anatase, rutile, P25), which were applied selective ethanol. The RhFeOx/P25 presented dispersion Rh nanoparticles P25 support abundant Rh0–Rhδ+–OV–Ti3+ (OV: oxygen vacancy) interfacial sites over anatase/rutile junction. optimized exhibited space–time yield 18.7 mmol gcat–1 h–1 turnover frequency 544.8 90.5% selectivity. An in-depth investigation via various ex situ in characterizations as well H2/D2 exchange C2H4 pulse experiments demonstrated that Rh0–Rhδ+–Ov–Ti3+ played crucial role conversion surface Rh0 facilitated activation hydrogenation, while boosted produce high-performance also provides attractive route highly hydrogenation.

Language: Английский

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Uncovering the Origin of Light‐Promoted Synergetic Effect and Y Doping in Enhancing Photothermocatalytic Dry Reforming of Methane on Ni/Ni‐Y₂‐Al₂O₃

Solar RRL, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

Photothermocatalytic dry reforming of methane (DRM) can convert CH 4 and CO 2 into syngas, offering an effective approach to reducing greenhouse gas emissions. However, photothermocatalytic DRM reaction generally needs a high light intensity surpassing 192 kW m −2 attain light‐fuel conversion. Also, catalysts applied are liable inactivation due carbon deposition. Herein, nanocomposite Ni nanoparticles supported on Ni‐ Y‐doped Al O 3 (Ni/Ni‐Y ‐Al ) is prepared. It achieves H production rates with light‐to‐fuel efficiency (29.2%) at lower (80.1 ). Meanwhile, it sustains excellent durability accomplishes 37‐fold reduction in deposition rate compared Ni/Al . The substantially enhanced catalytic activity resistance Ni/Ni‐Y correlated accelerating species (C*) oxidation (the rate‐determining steps DRM). This acceleration derives from the synergetic effect carbonate resulting Y doping, which participate C* via two separate pathways. When light, further facilitates oxidation. Simultaneously, immensely reduces activation energy, activates NiO bonds interface region, expedites between interface, enhancing resistance.

Language: Английский

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Recent Progress on Utilising Visible Light to Better Catalyst Stability for the Dry Reforming of Methane

Deleted Journal, Journal Year: 2025, Volume and Issue: 2(1), P. 10004 - 10004

Published: Jan. 1, 2025

Language: Английский

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Photo-depositing ruthenium species on defect-rich strontium titanate enhances photothermal catalytic dry reforming of methane through light-induced charge transfer and oxygen migration

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161311 - 161311

Published: March 1, 2025

Language: Английский

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Enhancing coke resistance of Ni-based spinel-type oxides by tuning the configurational entropy

Journal of Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 115819 - 115819

Published: Oct. 1, 2024

Language: Английский

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