4.7 Article

A novel mechanism for poisoning of metal oxide SCR catalysts: base-acid explanation correlated with redox properties

Journal

CHEMICAL COMMUNICATIONS
Volume 50, Issue 70, Pages 10031-10034

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cc02991g

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Funding

  1. National Natural Science Foundation of China [21307071]
  2. National Basic Research (973) Program of China [2013CB430005]
  3. National High-Tech Research and Development (863) Program of China [2013AA065401, 2012AA062506]

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A novel mechanism is proposed for the poisoning effect of acid gases and N2O formation on SCR catalysts involving base-acid properties correlated with redox ability of M-O or M-OH (M = Ce or V) of metal oxides and the strength of their basicity responsible for resistance to HCl and SO2 at medium and low temperatures.

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