Heteropoly acid promoted Cu and Fe catalysts for the selective catalytic reduction of NO with ammonia

Publication: Research - peer-reviewJournal article – Annual report year: 2011

View graph of relations

Cu/TiO2, Fe/TiO2 and heteropoly acid promoted Cu/TiO2, Fe/TiO2 catalysts were prepared and characterized by N2 physisorption, XRPD, NH3-TPD, H2-TPR and EPR. The catalysts exhibited only crystalline TiO2 phases with the active metals and promoters in highly dispersed state. The acidic properties were studied and compared with the catalytic activity for the selective catalytic reduction (SCR) of NO with ammonia. The SCR activities and acidity values of heteropoly acid promoted catalysts were found to be much higher than unpromoted catalysts. The influence of potassium poisons on the SCR activity and acidity was lower for promoted catalysts than for unpromoted catalysts. In the heteropoly acid promoted catalysts the SCR active Cu and Fe metals were protected from potassium poisons by bonding of the potassium to the Brønsted acid centres. Thus heteropoly acid promoted catalysts might be suitable for biomass fired power plant SCR applications.
Original languageEnglish
JournalCatalysis Today
Publication date2011
Volume176
Pages292-297
ISSN0920-5861
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 4

Keywords

  • SCR with ammonia, NH3-TPD, Potassium poisoning, HPA, Deactivation
Download as:
Download as PDF
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
Word

ID: 6267529