Changes in the chemical composition of V2O5-loaded CVC-TiO2 materials with calcination temperatures for NH 3-SCR of NOx

Woojoon Cha, Eunseuk Park, Sungmin Chin, Seong Taek Yun, Jongsoo Jurng

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In this study, the aim was to evaluate the effect of calcinations temperature on the catalytic activity and chemical composition of V 2O5/TiO2. We prepared V2O 5-loaded CVC-TiO2 catalysts by a combination of chemical vapor condensation (CVC) and impregnation method at different calcination temperatures. These catalysts were analyzed for their ability to catalyze NH3-based selective catalytic reduction of NOx. Compared with V2O5 loaded P25-TiO2 (commercial). V 2O5/CVC-TiO2 catalysts calcined above 200 C exhibited better performance towards NOx conversion than that by a commercial catalyst prepared using P25-TiO2 (calcined at 500 C). In addition, the NOx conversion rate obtained with the sample calcined at 500 C gave the best result (90 %) at a reaction temperature of 200 C. From the XPS results, we observed that the V4+/5+ ratio was well balanced when the V2O5 loaded CVC-TiO2 sample was calcined at 500 °C.

Original languageEnglish
Pages (from-to)1069-1074
Number of pages6
JournalJournal of Porous Materials
Volume20
Issue number5
DOIs
Publication statusPublished - 2013 Oct

Keywords

  • Chemical vapor condensation
  • Formic acid
  • NO
  • V

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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