The design of photocatalysts for the removal of NOx at normal temperatures—Copper (I) and silver (I) ion catalysts anchored within zeolite cavities

The design of photocatalysts for the removal of NOx at normal temperatures—Copper (I) and... The Cu+/ZSM-5 and Ag+/ZSM-5 catalysts were prepared by a combination of ion-exchange and thermovacuum treatments. In situ photoluminescence, ESR, XAFS, UV-VIS and FT-IR measurements of the catalysts revealed that within the cavity of the ZSM-5 zeolite, the Cu+ ion or Ag+ ion exists in an isolated state. UV irradiation of the catalysts in the presence of NO at normal temperature led to the formation of N2 and O2 for Cu+/ZSM-5 and N2, N2O and NO2 for Ag+/ZSM-5, indicating that the isolated Cu+ ion or Ag+ ion acts as a photocatalyst for the direct decomposition of NO. However, the Cu+/ZSM-5 catalyst loses its photocatalytic reactivity under the coexistence of O2, while the Ag+/ZSM-5 catalyst maintains its reactivity under the coexistence of O2 and H2O. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

The design of photocatalysts for the removal of NOx at normal temperatures—Copper (I) and silver (I) ion catalysts anchored within zeolite cavities

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Publisher
Springer Netherlands
Copyright
Copyright © 1997 by Springer
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1163/156856797X00420
Publisher site
See Article on Publisher Site

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