Catalytic activity of vanadium oxide catalysts prepared by electrodeposition for the selective catalytic reduction of nitrogen oxides with ammonia

Su Hyo Kim, Jin Sun Cha, Yoo Sang Jeon, Bum Chul Park, Min Chul Shin, Jun Kwang Song, Young-geun Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A facile synthesis of nanostructured vanadium oxide catalysts grown inside a honeycomb ceramic filter by electrodeposition without heat treatment is reported. The prepared catalysts are investigated for a selective catalytic reduction (SCR) of nitrogen oxide (NOx) with ammonia (NH3) in the temperature ranges from 250 to 450 °C. The SCR test results indicate that the NOx removal efficiency of the as-deposited sample is comparable to that of the sample heat treated at 600 °C as well as that of the sample prepared by conventional wash coating method. The nanostructured catalysts show similar NOx removal efficiencies after several recycles. Both polycrystalline and amorphous phases co-exist in the electrodeposited V-oxide catalysts confirmed by X-ray diffraction and selective area electron diffraction. The V-oxide catalysts show stronger V=O bond peaks and higher ratio of V4+/V5+ and Oα/Oβ on their surfaces as characterized by Raman spectroscopy and X-ray photoelectron spectroscopy.

Original languageEnglish
Pages (from-to)633-641
Number of pages9
JournalReaction Kinetics, Mechanisms and Catalysis
Volume118
Issue number2
DOIs
Publication statusPublished - 2016 Aug 1

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Keywords

  • Catalyst
  • Electrodeposition
  • Nanowire
  • Nitrogen oxide
  • Selective catalytic reduction
  • Vanadium oxide

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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