Reversed Charge Transfer Enables Dual Active Sites on Ir/hBN for Synergistic N<sub>2</sub>O Valorization and Propane Selective Oxidation

Wu, Yunshuo; Sun, Yuxin; Wu, Xuanhao; Wang, Haiqiang; Wu, Zhongbiao

doi:10.1021/acscatal.4c03697

ACS Catal.

2024

DOI: 10.1021/acscatal.4c03697

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Reversed Charge Transfer Enables Dual Active Sites on Ir/hBN for Synergistic N₂O Valorization and Propane Selective Oxidation

Yunshuo Wu,

Yuxin Sun,

Xuanhao Wu

et al.

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Cited by 3 publications

References 67 publications

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Advances and challenges in N2O valorization for alkane oxidative dehydrogenation to olefins

Wu,

Wang

et al. 2024

Green Chemical Engineering

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Advances and challenges in N2O valorization for alkane oxidative dehydrogenation to olefins

Wu,

Wang

et al. 2024

Green Chemical Engineering

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Insights into the Roles of Different Iron Species on Zeolites for N₂O Selective Catalytic Reduction by CO

Wu,

Fan

et al. 2024

Environ. Sci. Technol.

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Iron zeolites are promising candidates for mitigating nitrous oxide (N 2 O), a potent greenhouse gas and contributor to stratospheric ozone destruction. However, the atomic-level mechanisms by which different iron species, including isolated sites, clusters, and particles, participate in N 2 O decomposition in the presence of CO still remain poorly understood, which hinders the application of the reaction in practical technology. Herein, through experiments and density functional theory (DFT) calculations, we identified that isolated iron sites were active for N 2 O activation to generate adsorbed O* species, which readily reacted with CO following the Eley−Rideal (E-R) mechanism. In contrast, Fe 2 O 3 particles exhibited a different reaction pathway, directly reacting with CO to generate oxygen vacancies (O v ), which could efficiently dissociate N 2 O following the Mars-van Krevelen (MvK) mechanism. Moreover, the transformation of iron oxide clusters into undercoordinated FeO x species by CO was also revealed through various techniques, such as CO-temperatureprogrammed reduction (TPR), and ab initio molecular dynamics (AIMD) simulations. Our study provides deeper insights into the roles of different iron species in N 2 O-SCR by CO, and is anticipated to facilitate the understanding of multicomponent catalysis and the design of efficient iron-containing catalysts for practical applications.

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Heterogeneous catalysis for the environment

Liu,

Burciaga,

Tang

et al. 2024

TIMS

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<p>Anthropogenic climate and environmental changes increasingly threaten the sustainability of life on Earth, hindering the sustainable development of human societies. These detrimental ecological changes are driven by human activities that have elevated atmospheric levels of greenhouse gases and toxic substances, increased inorganic and organic pollutants in water bodies, and led to the accumulation of solid waste in soils. Over the next two to three decades, the impacts of climate change, water pollution, and soil contamination are expected to intensify, posing increasing risks to human health and global stability. Considering these trends, it is essential to implement robust mitigation and adaptation strategies. This paper analyzes environmental pollution problems from the perspectives of atmospheric, water, and soil contamination. It summarizes current research on heterogeneous catalysis for treating pollutants in gaseous, liquid, and solid phases, with an emphasis on the key challenges of applying these catalytic conversion technologies in cost-effective industrial settings. Finally, strategies for mitigating environmental pollutants via heterogeneous catalysis are discussed from the perspectives of material flow, energy flow, and data flow. This paper aims to offer scientific insights to enhance future research and practice in heterogeneous catalysis for environmental remediation.</p>

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Reversed Charge Transfer Enables Dual Active Sites on Ir/hBN for Synergistic N₂O Valorization and Propane Selective Oxidation

Cited by 3 publications

References 67 publications

Advances and challenges in N2O valorization for alkane oxidative dehydrogenation to olefins

Advances and challenges in N2O valorization for alkane oxidative dehydrogenation to olefins

Insights into the Roles of Different Iron Species on Zeolites for N₂O Selective Catalytic Reduction by CO

Heterogeneous catalysis for the environment

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Resources

About

Reversed Charge Transfer Enables Dual Active Sites on Ir/hBN for Synergistic N2O Valorization and Propane Selective Oxidation

Cited by 3 publications

References 67 publications

Advances and challenges in N2O valorization for alkane oxidative dehydrogenation to olefins

Advances and challenges in N2O valorization for alkane oxidative dehydrogenation to olefins

Insights into the Roles of Different Iron Species on Zeolites for N2O Selective Catalytic Reduction by CO

Heterogeneous catalysis for the environment

Contact Info

Product

Resources

About

Reversed Charge Transfer Enables Dual Active Sites on Ir/hBN for Synergistic N₂O Valorization and Propane Selective Oxidation

Insights into the Roles of Different Iron Species on Zeolites for N₂O Selective Catalytic Reduction by CO