Understanding and Tuning the Effects of H₂O on Catalytic CO and CO₂ Hydrogenation

Chemical Reviews, Год журнала: 2024, Номер 124(21), С. 12006 - 12085

Опубликована: Окт. 31, 2024

Catalytic COx (CO and CO2) hydrogenation to valued chemicals is one of the promising approaches address challenges in energy, environment, climate change. H2O an inevitable side product these reactions, where its existence effect are often ignored. In fact, significantly influences catalytic active centers, reaction mechanism, performance, preventing us from a definitive deep understanding on structure-performance relationship authentic catalysts. It necessary, although challenging, clarify provide practical strategies tune concentration distribution optimize influence. this review, we focus how induces structural evolution catalysts assists processes, as well efforts understand underlying mechanism. We summarize discuss some representative tuning for realizing rapid removal or local enrichment around catalysts, along with brief techno-economic analysis life cycle assessment. These fundamental understandings further extended reactions CO CO2 reduction under external field (light, electricity, plasma). also present suggestions prospects deciphering controlling applications.

Язык: Английский

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Zinc Migration Mediates Isolated [PtFe₃] in Zeolite for Propane Dehydrogenation

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 3215 - 3226

Опубликована: Фев. 7, 2025

Structural transformation under in situ reaction conditions plays a vital role heterogeneous catalytic performance, especially caused by metal migration. However, the migration of active components often leads to irreversible structural disruption at high temperatures, which could be associated with deactivation catalysts. Here, we report low-melting-point Zn migration-mediated strategy synthesize ultrastable isolated PtFe3 sites anchored MFI zeolite for propane direct dehydrogenation. The optimized catalyst exhibited superior specific activity 36.5 mol C3H6 molPt–1 s–1 propylene selectivity above 99% 550 °C. Moreover, dehydrogenation remained stable after over 400 h on stream low rate constant 0.001 h–1 industrial 580 In characterizations demonstrated that Fe3+ species were conducive rearrangement electronic configuration unoccupied 5d states Pt atoms form electron-deficient sites. This afford insights into dynamic evolution preparation processes.

Язык: Английский

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Type III porous ionic liquids via lipophilicity differences for enhanced oxidation catalysis

AIChE Journal, Год журнала: 2025, Номер unknown

Опубликована: Янв. 27, 2025

Abstract In this study, an innovative strategy is proposed to design porous ionic liquids (PILs) using lipophilicity differences, defined as type III‐B PIL, which overcomes the traditional size‐effect limitations in PIL design. An SBA‐15 confined high‐entropy single‐atom catalyst (HESAC@SBA‐15) with oleophobic internal surface was engineered framework and oleaginous 1‐butyl‐3‐methylimidazolium tetrafluoroborate organic guest for constructing a novel (PILS‐B). This of PILS‐B combines exceptional gas storage capacity PILs high catalytic activity HESAC@SBA‐15. Additionally, mesoporous structure enhances mass transfer during reactions, thereby improving efficiency. Using aerobic oxidation aromatic sulfur compounds fuel oils model reaction, achieved desulfurization efficiency >99%. expands variety frameworks guests design, showcasing potential effective stable catalysts broader applications catalysis.

Язык: Английский

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Redox-Mediated Interfacial Restructuring of Supported In₂O₃ to Drive CO₂ Hydrogenation to Methanol

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 2785 - 2795

Опубликована: Янв. 31, 2025

Язык: Английский

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The role of Cu0 in propane dehydration over extremely-low loaded PtCu@S-1 catalyst

Chemical Engineering Journal, Год журнала: 2025, Номер 505, С. 159408 - 159408

Опубликована: Янв. 8, 2025

Язык: Английский

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Recent Advances in Metal–Zeolite Catalysts for Ethanol to 1,3-Butadiene Conversion: Active Metal Sites, Mechanisms, and Future Challenges

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 5053 - 5085

Опубликована: Март 11, 2025

Язык: Английский

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CO2-enhanced alkane aromatization over Cu-ZSM-5 zeolite: Insights into active sites and catalytic performance

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

Опубликована: Март 1, 2025

Язык: Английский

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Calcium single atom catalyst with unusual activity and stability for the synthesis of dimethyl carbonate

Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown, С. 137386 - 137386

Опубликована: Март 1, 2025

Язык: Английский

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Removal of heavy metal ions in wastewater and reuse as a hydrogenolysis catalyst: Multistage application of lignin-based adsorbent

Industrial Crops and Products, Год журнала: 2025, Номер 228, С. 120919 - 120919

Опубликована: Март 29, 2025

Язык: Английский

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Dynamic evolution of metal structures on/in zeolites for catalysis

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This review explores metal migration dynamics on/in zeolite supports, analyzing mechanisms and driving factors under varied conditions. It highlights the crucial role of in stabilizing metals enhancing performances.

Язык: Английский

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