論文

査読有り
2019年10月

Bulk Vanadium Oxide versus Conventional V2O5/TiO2: NH3-SCR Catalysts Working at a Low Temperature Below 150 degrees C

ACS CATALYSIS
  • Yusuke Inomata
  • ,
  • Shinichi Hata
  • ,
  • Makoto Mino
  • ,
  • Eiji Kiyonaga
  • ,
  • Keiichiro Morita
  • ,
  • Kenji Hikino
  • ,
  • Kazuhiro Yoshida
  • ,
  • Hiroe Kubota
  • ,
  • Takashi Toyao
  • ,
  • Ken-ichi Shimizu
  • ,
  • Masatake Haruta
  • ,
  • Toru Murayama

9
10
開始ページ
9327
終了ページ
9331
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acscatal.9b02695
出版者・発行元
AMER CHEMICAL SOC

Practical catalysts that work at a low temperature for selective catalytic reduction of NOx using NH3 (NH3-SCR) have been required to treat NOx at the outlet temperature in boiler systems (100-150 degrees C). In this paper, we report bulk vanadium oxide catalysts that show NH3-SCR activity at a low temperature below 150 degrees C. Defective bulk vanadium oxide (V(V)+V(IV)) catalysts were synthesized by the calcination of vanadium(IV)-oxalate at 270 degrees C (1-4 h). The reaction rate per mol of surface vanadium atom of the catalyst calcined at 270 degrees C for 2 h (V 270-2, 6.4 x 10(-2) mol(NO) molV(-1) s(-1)) was 10-14 times faster than those of conventional 1-9 wt % V2O5/TiO2 (4.5 x 10(-3)-6.1 x 10-3 mol(NO) mol(V)(-1) s(-1)), indicating that bulk vanadium oxide is more favorable for NH3-SCR and V(IV) species enhance the activity. The NH3-SCR of V 270-2 is driven by the Lewis acid mechanism, which proceeds faster than the Bronsted acid mechanism.

Web of Science ® 被引用回数 : 3

リンク情報
DOI
https://doi.org/10.1021/acscatal.9b02695
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000489204000057&DestApp=WOS_CPL

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