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- W3022257429 abstract "SSZ-13, a CHA-type aluminosilicate zeolite, has attracted substantial attention recently due to its extraordinary physicochemical properties, and Cu-modified SSZ-13 has been commercialized as a selective catalytic reduction (SCR) catalyst for controlling emissions from diesel engines. In this work, the Cu&Zn dual-metal-modified SSZ-13 zeolite catalyst (Cu&Zn-SSZ-13) was elegantly synthesized in a one-pot (OP) manner, and the prepared material exhibits good NH3-SCR activity. Impressively, Cu&Zn-SSZ-13(OP) has greater hydrothermal stability than Cu-SSZ-13 catalysts prepared by other means. The characterization data (obtained by XPS, H2-TPR, NH3-TPD and EPR techniques) in this work revealed that the Zn introduced by a one-pot method would not only help optimize and disperse the isolated Cu2+ species, providing good SCR activity, but also form [Zn-OH]-Z, [Cu-O-Zn]-Z, and [Zn-O-Zn]-Z complexes. Further DFT calculations confirm that these complexes are much more stable than single Cu ions under hydrothermal aging, and these Zn-containing species can function as anchors to stabilize the SSZ-13 framework." @default.
- W3022257429 created "2020-05-13" @default.
- W3022257429 creator A5004348783 @default.
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- W3022257429 creator A5082125036 @default.
- W3022257429 date "2020-05-05" @default.
- W3022257429 modified "2023-10-14" @default.
- W3022257429 title "Understanding Zn Functions on Hydrothermal Stability in a One-Pot-Synthesized Cu&Zn-SSZ-13 Catalyst for NH<sub>3</sub> Selective Catalytic Reduction" @default.
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- W3022257429 doi "https://doi.org/10.1021/acscatal.0c01063" @default.
- W3022257429 hasPublicationYear "2020" @default.
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