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A Cu-Pd single-atom alloy catalyst for highly efficient NO reduction
This item is licensed under:Creative Commons Attribution 3.0 Unported
| 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. |
| Rights: | http://creativecommons.org/licenses/by/3.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/76140 |
| 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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