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Improved NO reduction by using metal-organic framework derived MnO _x -ZnO.

ABSTRACT: Derivatives based on metal frameworks (MOFs) are attracting more and more attention in various research fields. MOF-based derivatives x% MnO _x -ZnO are easily synthesized by the thermal decomposition of Mn/MOF-5 precursors. Multiple technological characterizations have been conducted to ascertain the strengthening interaction between Mn species (Mn²⁺ or Mn³⁺) and Zn²⁺ (e.g., XRD, FTIR, TG, XPS, SEM, H₂-TPR and Py-FTIR). The 5% MnO _x -ZnO exhibits the highest NO conversion of 75.5% under C₃H₆-SCR. In situ FTIR and NO-TPD analysis showed that monodentate nitrates, bidentate nitrates, bridged bidentate nitrates, nitrosyl groups and C _x H _y O _z species were formed on the surface, and further hydrocarbonates or carbonates were formed as intermediates, directly generating N₂, CO₂ and H₂O.

SUBMITTER: Zhao L

PROVIDER: S-EPMC9056559 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

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Improved NO reduction by using metal-organic framework derived MnO x -ZnO.

Zhao Ling L Chen Ziang Z Zhang Peng P Zhang Yu Y

RSC advances 20200827 53

Derivatives based on metal frameworks (MOFs) are attracting more and more attention in various research fields. MOF-based derivatives x% MnO x -ZnO are easily synthesized by the thermal decomposition of Mn/MOF-5 precursors. Multiple technological characterizations have been conducted to ascertain the strengthening interaction between Mn species (Mn2+ or Mn3+) and Zn2+ (e.g., XRD, FTIR, TG, XPS, SEM, H2-TPR and Py-FTIR). ...[more]

PMID: 35518149

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