Plasma-assisted manipulation of vanadia nanoclusters for efficient selective catalytic reduction of NOx

Yin, Yong; Luo, Bingcheng; Li, Kezhi; Moskowitz, Benjamin M.; Lis, Bar Mosevitzky; Wachs, Israel E.; Zhu, Minghui; Sun, Ye; Zhu, Tianle; Li, Xiang

doi:10.1038/s41467-024-47878-1

Title: Plasma-assisted manipulation of vanadia nanoclusters for efficient selective catalytic reduction of NO_x

Journal Article · 26 April 2024 · Nature Communications

DOI: https://doi.org/10.1038/s41467-024-47878-1 · OSTI ID:2471890

Yin, Yong ^[1];

^[2]; Li, Kezhi ^[3]; Moskowitz, Benjamin M. ^[4];

^[4]; Wachs, Israel E. ^[4];

^[5]; Sun, Ye ^[6]; Zhu, Tianle ^[6];

^[6]

Beihang University, Beijing (China); OSTI
China Agricultural University, Beijing (China)
Sinopec Catalyst Co. Ltd., Beijing (China)
Lehigh University, Bethlehem, PA (United States)
East China University of Science and Technology, Shanghai (China)
Beihang University, Beijing (China)

Supported nanoclusters (SNCs) with distinct geometric and electronic structures have garnered significant attention in the field of heterogeneous catalysis. However, their directed synthesis remains a challenge due to limited efficient approaches. This study presents a plasma-assisted treatment strategy to achieve supported metal oxide nanoclusters from a rapid transformation of monomeric dispersed metal oxides. As a case study, oligomeric vanadia-dominated surface sites were derived from the classic supported V₂O₅-WO₃/TiO₂ (VWT) catalyst and showed nearly an order of magnitude increase in turnover frequency (TOF) value via an H₂-plasma treatment for selective catalytic reduction of NO with NH₃. Such oligomeric surface VO_x sites were not only successfully observed and firstly distinguished from WO_x and TiO₂ by advanced electron microscopy, but also facilitated the generation of surface amide and nitrates intermediates that enable barrier-less steps in the SCR reaction as observed by modulation excitation spectroscopy technologies and predicted DFT calculations.

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Research Organization:: Georgia Institute of Technology, Atlanta, GA (United States)

Sponsoring Organization:: National Natural Science Foundation of China; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0012577

OSTI ID:: 2471890

Journal Information:: Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 15; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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The influence of support on the activity of monolayer vanadia-titania catalysts for selective catalytic reduction of NO with ammonia

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Catalyst synthesis
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Science & Technology

Title: Plasma-assisted manipulation of vanadia nanoclusters for efficient selective catalytic reduction of NOx

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Title: Plasma-assisted manipulation of vanadia nanoclusters for efficient selective catalytic reduction of NO_x