Highly active and stable VOx/TiO2 nanosheets for low-temperature NH3-SCR of NO: Structure-directing role of support

Lin, Liang-Yi; Wang, Yu-Chen; Liu, Zi-Lan

doi:10.1016/j.cej.2024.149637

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.149637

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Highly active and stable VOx/TiO2 nanosheets for low-temperature NH3-SCR of NO: Structure-directing role of support

Liang-Yi Lin,

Yu-Chen Wang,

Zi-Lan Liu

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Cited by 8 publications

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Catalytic Advancements in NH₃ Selective Catalytic Oxidation: The Impact of Cu‐Induced Lattice Distortion in TiO₂ Crystal Structure

Liu,

Long,

et al. 2024

Chemistry An Asian Journal

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A series of xCu ‐TiO2 obtained from the sol‐gel method were tested for NH3 selective catalytic oxidation (NH3‐SCO). Its performance was higher than that of supported Cu/TiO2‐Im and solvent‐free Cu/TiO2‐SF. The catalyst exhibits better water resistance at 300 ℃. XRD, Raman, and H2‐TPR proved that the crystal lattice of TiO2 was deformed by Cu doping, which increased the specific surface area of the catalyst. The dispersion of the Cu component is further enhanced. The enhancement of redox potential was the key to improving catalytic activity. The NH3‐TPD results prove that more acidic sites promote more active NH3 species being adsorbed and dissociated on the catalyst surface. The in‐situ DRIFTs results certify that the NH3 species adsorbed on the Lewis acid sites were easier to consume than those on the Brønsted acid sites. The DFT theoretical calculation demonstrates that the doped Cu promotes the TiO2 conduction band to move closer to the Fermi level and enhances the redox performance of the catalyst. The results suggest that the Cu‐TiO2 catalyst was a potential catalyst under actual working conditions, which would provide a technological reserve for the development and diffusion of ammonia slip for both mobile and fixed sources.

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Catalytic Advancements in NH₃ Selective Catalytic Oxidation: The Impact of Cu‐Induced Lattice Distortion in TiO₂ Crystal Structure

Liu,

Long,

et al. 2024

Chemistry An Asian Journal

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show abstract

Study on denitrification performance and mechanism of (Ce, La)PO4 under different calcination conditions

Li,

Wang

et al. 2025

Reac Kinet Mech Cat

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Promoting effect of Ce-modified phosphomolybdenum heteropolyacid catalyst on low-temperature NH3-SCR

Jia,

Wen,

Guo

et al. 2025

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Highly active and stable VOx/TiO2 nanosheets for low-temperature NH3-SCR of NO: Structure-directing role of support

Cited by 8 publications

References 64 publications

Catalytic Advancements in NH₃ Selective Catalytic Oxidation: The Impact of Cu‐Induced Lattice Distortion in TiO₂ Crystal Structure

Catalytic Advancements in NH₃ Selective Catalytic Oxidation: The Impact of Cu‐Induced Lattice Distortion in TiO₂ Crystal Structure

Study on denitrification performance and mechanism of (Ce, La)PO4 under different calcination conditions

Promoting effect of Ce-modified phosphomolybdenum heteropolyacid catalyst on low-temperature NH3-SCR

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Highly active and stable VOx/TiO2 nanosheets for low-temperature NH3-SCR of NO: Structure-directing role of support

Cited by 8 publications

References 64 publications

Catalytic Advancements in NH3 Selective Catalytic Oxidation: The Impact of Cu‐Induced Lattice Distortion in TiO2 Crystal Structure

Catalytic Advancements in NH3 Selective Catalytic Oxidation: The Impact of Cu‐Induced Lattice Distortion in TiO2 Crystal Structure

Study on denitrification performance and mechanism of (Ce, La)PO4 under different calcination conditions

Promoting effect of Ce-modified phosphomolybdenum heteropolyacid catalyst on low-temperature NH3-SCR

Contact Info

Product

Resources

About

Catalytic Advancements in NH₃ Selective Catalytic Oxidation: The Impact of Cu‐Induced Lattice Distortion in TiO₂ Crystal Structure

Catalytic Advancements in NH₃ Selective Catalytic Oxidation: The Impact of Cu‐Induced Lattice Distortion in TiO₂ Crystal Structure