Revealing the roles of Zr on enhanced H2-SCR performances on Pt/TiO2 catalyst

Chemical Engineering Journal, Год журнала: 2024, Номер 490, С. 151714 - 151714

Опубликована: Апрель 26, 2024

Язык: Английский

---

Striking Improvement of N₂ Selectivity in NH₃ Oxidation Reaction on Fe₂O₃-Based Catalysts via SiO₂ Doping

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

The emission of NH3 has been reported to pose a serious threat both human health and the environment. To efficiently eliminate NH3, catalysts for selective catalytic oxidation (NH3–SCO) have intensively studied. Fe2O3-based were found exhibit superior activity; however, low N2 selectivity made it less attractive in practical applications. In this work, aimed at improving on catalysts, simple SiO2 doping strategy was proposed. Although activity showed almost no change Fe2O3 after doping, significantly improved. Systematic characterizations revealed that could increase specific surface area Fe2O3, strong interaction Fe–O–Si formed Fe2O3–SiO2 mixed oxide catalysts. Furthermore, abundant Brønsted acid sites due facile hydrolysis structure into Si–OH Fe–OH. weaken redox ability facilitate reaction through an internal SCR (i-SCR) pathway, thus achieving selectivity. This work can provide new insights constructing efficient NH3–SCO with high

Язык: Английский

---

Advances and Challenges in Zeolite-Based Catalysts for the Selective Catalytic Oxidation of Ammonia

Catalysts, Год журнала: 2025, Номер 15(3), С. 204 - 204

Опубликована: Фев. 21, 2025

Ammonia (NH3) emissions from mobile sources pose significant environmental challenges, contributing to air pollution, ecosystem degradation, and climate change. The selective catalytic oxidation of NH3 (NH3-SCO) offers a sustainable solution by converting into nitrogen water, yet designing catalysts that balance high efficiency, selectivity, stability under operational conditions remains critical challenge. This review provides comprehensive overview zeolite-based catalysts, renowned for their surface area, tunable pore structures, exceptional hydrothermal stability, which make them ideal NH3-SCO applications. synthesizes recent advancements in catalyst design, emphasizing innovative architecture, the role zeolite frameworks active site dispersion, strategies optimizing architectures. Key insights include an enhanced understanding reaction mechanisms, progress mitigating deactivation caused poisoning sintering, development bimetallic core-shell improve performance durability. Current limitations, including sensitivity environments scalability issues, are critically analyzed, potential overcoming these barriers proposed. highlights state-of-the-art catalysis, offering valuable fundamental applied aspects design. findings presented here provide roadmap future innovations paving way more efficient robust solutions ammonia emission control.

Язык: Английский

---

Bimetallic PdAu Nanoparticles Supported on TiO₂ for the Selective Catalytic Reduction of NO_x in the Presence of Oxygen

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Язык: Английский

---

Rational co-introduction of K-Ce ions into OMS-2 tunnels to promote oxygen vacancies and Brönsted acid sites for enhanced NH3-SCO

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125212 - 125212

Опубликована: Фев. 1, 2025

Язык: Английский

---

Rapid and Facile Synthesis of Highly Mesoporous SSZ-13 Zeolites from Interzeolite Conversion of Y Zeolite

Crystal Growth & Design, Год журнала: 2025, Номер unknown

Опубликована: Март 26, 2025

Язык: Английский

---

Selective catalytic oxidation of NH3 over Co3O4-Cu/KFI composite with superior low-temperature activity and N2 selectivity

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116626 - 116626

Опубликована: Апрель 1, 2025

Язык: Английский

---

Mechanistic Insights into Ammonia Oxidation over Electron Transfer-Induced Pt–O–Cu Dual Sites

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 7180 - 7190

Опубликована: Апрель 17, 2025

Язык: Английский

---

Unlocking the Potential of Isolated Pt Atoms for NH₃–SCO Reactions via Modulating Orbital Coupling in Heteroatom Ensembles

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 10531 - 10541

Опубликована: Июнь 5, 2025

Язык: Английский

---

Promoting effect of Cu as electron transfer medium on NH3-SCO reaction in asymmetric Ag-Ov-Ti-Sm-Cu ring active site

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 678, С. 602 - 615

Опубликована: Авг. 25, 2024

Язык: Английский

---