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A Cu-Pd single-atom alloy catalyst for highly efficient NO reduction

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Title: A Cu-Pd single-atom alloy catalyst for highly efficient NO reduction
Authors: Xing, Feilong Browse this author
Jeon, Jaewan Browse this author
Toyao, Takashi Browse this author
Shimizu, Ken-ichi Browse this author
Furukawa, Shinya Browse this author →KAKEN DB
Issue Date: 28-Sep-2019
Publisher: Royal Society of Chemistry
Journal Title: Chemical science
Volume: 10
Issue: 36
Start Page: 8292
End Page: 8298
Publisher DOI: 10.1039/c9sc03172c
Abstract: A series of Cu-Pd alloy nanoparticles supported on Al2O3 were prepared and tested as catalysts for deNO(x) reactions. XRD, HAADF-STEM, XAFS, and FT-IR analyses revealed that a single-atom alloy structure was formed when the Cu/Pd ratio was 5, where Pd atoms were well isolated by Cu atoms. Compared with Pd/Al2O3, Cu5Pd/Al2O3 exhibited outstanding catalytic activity and N-2 selectivity in the reduction of NO by CO: for the first time, the complete conversion of NO to N-2 was achieved even at 175 degrees C, with longterm stability for at least 30 h. High catalytic performance was also obtained in the presence of O-2 and C3H6 (model exhaust gas), where a 90% decrease in Pd use was achieved with minimum evolution of N2O. Kinetic and DFT studies demonstrated that N-O bond breaking of the (NO)(2) dimer was the rate-determining step and was kinetically promoted by the isolated Pd.
Type: article
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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