Highly Selective Catalytic Oxidation of Methane to Methanol using Cu-Pd/Anatase

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Cu–Pd/anatase is highly efficient in converting methane to methanol, exhibiting a relatively high methanol yield rate of ∼31 800 μmol g cat −1 h and near-exclusive selectivity liquid products (methanol).

Language: Английский

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Photothermal direct methane conversion to formaldehyde at the gas-solid interface under ambient pressure

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: March 15, 2025

Photocatalytic direct oxidation of methane to C1 oxygenates offers a green alternative conventional energy-intensive and high-carbon-footprint multi-step processes. However, current batch-type gas–liquid–solid reaction systems under high-pressure conditions face critical challenges in real-time product separation concentration for industrial implementation. Here, we demonstrate continuous-flow gas–solid photothermal catalytic route conversion formaldehyde ambient pressure, where the generated gas-phase can be easily collected by water absorption. The Ag single-atom modified ZnO photocatalyst achieves production rate 117.8 ± 1.7 μmol h−1 with 71.2 0.8% selectivity. Meanwhile, highly concentrated solution (514.2 33.7 µmol mL−1, 1.54 0.10 wt.%) is obtained through 12-hour absorption, effectively overcoming enrichment barrier that plagues batch route. This study establishes robust technological foundation sustainable industrial-scale value-added chemicals. introduces phase catalysis approach pressure. more scalable conversion.

Language: Английский

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Near-Infrared Photon-Triggered CH4-to-CH3OH Conversion over Plasmonic Oxyselenides

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

The direct oxidation of methane into methanol exploiting O2 as oxidant offers an ideal route for utilization. Although the reaction is strongly preferred in thermodynamics, conventional catalytic systems always demand intense energy input like high temperatures or high-energy photons (>2.8 eV) to conquer large kinetic barrier conversion process. In this study, we demonstrate that by creation a suitable plasmonic photocatalyst, namely oxygen-vacancy-rich CuSeO3-x, low-energy near-infrared (NIR) can serve sole complete CH4-to-CH3OH with remarkable activity (AQY 1.5 % at 800 nm Au cocatalyst) and near unity selectivity (ca. 96 %) 25 ℃. Such fascinating performance attributed small activation measured 0.28 eV, enabled existence CuII-Ov species CuSeO3-x. Our study suggests ensemble constitutes exceptional active site, which harness plasmon-induced hot electrons meantime brings kinetically advantageous reducing •OH radicals greatly favoring activation.

Language: Английский

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Enhanced Conversion of Methane to Liquid-phase Oxygenates via Hollow Ferrite Nanotube@Horseradish Peroxidase Based Photoenzymatic Catalysis

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 361, P. 124593 - 124593

Published: Sept. 10, 2024

Language: Английский

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Tandem photo-oxidation of methane to methanol at room temperature and pressure over Pt/TiO2

Nano Research, Journal Year: 2023, Volume and Issue: 16(12), P. 12942 - 12948

Published: Dec. 1, 2023

Language: Английский

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