The strong Fe-Mn interaction over red mud accelerating the activation of key oxygen species for toluene oxidation

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161265 - 161265

Опубликована: Март 1, 2025

Язык: Английский

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Co-based Spinel and Perovskite Oxides in Catalytic Combustion of Volatile Organic Compounds: Recent Advances and Future Prospects

Journal of environmental chemical engineering, Год журнала: 2025, Номер 13(1), С. 115359 - 115359

Опубликована: Янв. 7, 2025

Язык: Английский

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Effects of structural differences between γ-MnO₂ and γ-Mn₂O₃ catalysts on CO oxidation: different active oxygen species and carbonate species using operando TPR-DRIFTS-MS

New Journal of Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

MnO facilitates the formation of v as (CO 3 2− ) or s (OCO), and decomposition at low temperatures is a decisive step in CO oxidation.

Язык: Английский

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Construction of Electron-Enriched Pt^δ+ with Reactive Oxygen Species for Enhanced Propane Catalytic Combustion

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Март 25, 2025

The complete catalytic oxidation of propane (C3H8) at low temperatures remains challenging due to the competitive adsorption between O2 and C3H8 molecules. In this study, we propose an innovative approach enhance by strategically designing active Ptδ+ sites with modulated electronic structures on F-doped TiO2-supported Pt catalyst (Pt/F-TiO2), which exhibits 50 90% conversion 200 320 °C. Our mechanistic study reveals that electron coupling 5d F 2p alters d orbital property, leads generation abundant efficient electron-enriched species. These new facilitate promote activation chemisorbed into superoxide species, in form bridge Pt-(O–O)ad-Ti, synergistically facilitates methyl C–H cleavage C3H8. This presents strategy for structure engineering Pt-based catalysts, paving way development high-performance catalysts oxidation.

Язык: Английский

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Synergistic Catalytic Oxidation of O-Xylene on 0.075zr-0.15co/Ni/Nf Monolithic Catalyst: Mechanistic Insights into Surface Oxygen Vacancies and Co Promotion

Опубликована: Янв. 1, 2025

Язык: Английский

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Diverse Effects of SO₂-Induced Pt–O–SO₃ on the Catalytic Oxidation of C₃H₆ and C₃H₈

Environmental Science & Technology, Год журнала: 2024, Номер unknown

Опубликована: Сен. 26, 2024

The effects of sulfur dioxide (SO

Язык: Английский

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Hydrogen-Ignited-Methanol Catalytic Co-Combustion of Aromatic Volatile Organic Compounds over PdPt/Al2O3 Bimetallic Catalyst

Catalysts, Год журнала: 2024, Номер 14(9), С. 637 - 637

Опубликована: Сен. 19, 2024

Electric heating is frequently employed to treat volatile organic compounds (VOCs) through catalytic combustion. However, it associated with problems such as slow heating, high energy consumption, and low efficiency. This study explores PdPt/Al2O3 catalysts for igniting methanol (MeOH) H2 combustion, providing internal on-site of catalyst active sites. It also investigates VOCs’ abatement using H2-ignited-MeOH combustion without external heating. Bimetallic enhance activity reduce thermal aging. Hydrogen gas (H2) can initiate the MeOH at room temperature addition very small amounts, even below its explosive limit 4%. process optimizes ignition approximately 350 °C, when concentration 0.01%. method enhances kinetics, converting VOCs into CO2 water. Catalytic performance independent PdPt nanoparticle sizes in fresh spent catalysts, represented XRD STEM. Using hydrogen an agent provides a clean, effective reactions, addressing traditional challenges enhancing decomposition

Язык: Английский

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Diving into the influence of phosphorus on ceria-supported copper manganese bimetallic oxides for catalytic removal of carbon monoxide

Applied Surface Science, Год журнала: 2024, Номер unknown, С. 161545 - 161545

Опубликована: Окт. 1, 2024

Язык: Английский

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Connecting the liquid fragility to the average weakest metal–oxygen bond of its crystal in oxides

The Journal of Chemical Physics, Год журнала: 2024, Номер 161(19)

Опубликована: Ноя. 18, 2024

Glass and crystal are inherently different material states in terms of their structural physical features; consequently, the direct quantitative connection between glass is lacking. Herein, we first show that liquid fragility m, which featured by negative departure degree viscosity with temperature at transition (Tg), has a exponential correlation ratio average longest metal-oxygen phosphorus, silicon, or boron-oxygen bond lengths various oxides including phosphates, silicates, borates. Such result can be rationalized fact m these glass-formers associated total network rigidity determined weakest due to "bucket effect" pair inheritance from crystal. Our work connects features identical composition, providing new viewpoint bridging

Язык: Английский

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Insights into the role of the different supports in copper-based catalysts for propane combustion

Progress in Natural Science Materials International, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

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