English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Ceria-based catalysts are competitive substitutes for the commercial SCR catalysts due to their high SCR activity and excellent redox performance. For a better understanding of the SO 2 poisoning mechanism over ceria-based catalysts, the sulfation effect of the Ce/TiO 2 catalyst on the SCR activity over a wide reaction temperature range was systematically studied via comprehensive characterizations, in situ DRIFT studies and kinetic studies. The results demonstrated that the NO conversion at 150 °C is significantly inhibited by the formation of cerium sulfites/sulfates due to the inhibited redox properties and excessive adsorption of NH 3 , which restrict the dissociation of NH 3 to NH 2 , resulting in a much lower reaction rate of E-R reaction over the sulfated Ce/TiO 2 catalyst. With the increase in the reaction temperature, the reaction rate of the E-R reaction significantly increased due to the improved redox properties and weakened adsorption of NH 3 . Moreover, the rate of the C-O reaction over the sulfated Ce/TiO 2 catalysts is obviously lower than that of the fresh Ce/TiO 2 catalyst. The promotion of NO conversion over the sulfated catalyst at 330 °C is attributed to both the increase in the reaction rate of E-R reaction and the inhibition of the C-O reaction.

rsc advances

Sulfation effect of Ce/TiO2 catalyst for the selective catalytic reduction of NOx with NH3: mechanism and kinetic studies