Studies on the Preparation for the Simultaneous Removal of NO and $SO_2$ from Stationary Sources I.Surface properties and reactivity of $V_2O_5-MoO_3/TiO_2$ catalysts

고정원에서 배출되는 $NO_x/SO_x$의 동시제거를 위한 SCR 촉매의 제조법에 관한 연구: I. $V_2O_5-MoO_3/TiO_2$ 촉매들의 표면특성과 반응성

  • 구미화 (경희대학교 공과대학 화학공학과) ;
  • 정석진 (경희대학교 공과대학 화학공학과)
  • Published : 1992.03.01

Abstract

For removing $NO_x$ and $SO_x$ from the flue gases emitted from stationary sources, $V_2O_5-MoO_3/TiO_2$ catalysts were prepared by the conventional impregnation method (aqueous solution) and a sort of surface fixation method(nonaqueous solution) as reported excellent reproducibility catalysts. And these catalysts observed their catalytic activities as well as their surface properties. V-Mo-O oxide, prepared from nonaqueous solution of $VOCl_3$ and $Mo(CO)_6$ and aqeous solution method, was supported as amorphous state by XRD and SEM measurements. The infrared spectra of fresh and used catalysts showed that in used catalysts, V=O bands decreased and new bands of vanadium oxysulfate bands were very sensitive. So the catalysts prepared from nonaqueous solution may bring about the high activity. Results from catalytic activity measurements at 350$^\circ$C, in the presence of $SO_2, NO$ conversion was more increased than in absence of $SO_2$. As the $MoO_3$ was added to $V_2O_5/TiO_2 system, SO_2$ conversion increased. It found that from the results, $V_2O-5-MoO_3/TiO_2$ catalysts prepared from an nonaqueous solution may bring about the high activity for both the reaction of NO and $SO_2$ removal.

Keywords

References

  1. 화학공업과 기술 v.6 no.2 남인식
  2. Appl. Catal. v.25 Bosch,H.;F.J.J.G.Janssen
  3. J. Catal. v.62 Inomata,M.;A.Miyamoto;Y.Murakami
  4. J. Fuel. Soc. of Japan v.61 Kasaoka,S.;E.Sasaoka
  5. Shokubai v.31 no.8 Kato,A.;A.Miyamoto
  6. Appl. Catal. v.52 M.Kotter;H.G.lintz;T.Turek
  7. IEC. Prod. Res. Develop. v.20 Okazaki,S.;M.Kumasaka;J.Yoshida;K.Kosaka
  8. J. Phys. Chem. v.93 Satsuma,A.;A.Hattori;A.Miyamoto
  9. Heterogeneous Catalysis in Practice Satterfield
  10. IEC. Prod. Res. Develop. v.23 Shikada,T.;T.Oba;K.Fujimoto;H.Tominaga
  11. 8th Cong. of Catalysis v.III-637 Shikata,T.;T.Oba;K.Fujimoto;H.Tominaga
  12. Chem. Lett. Teraoka,Y.;K.Shinanae;N.Yamazeo
  13. Shokubai v.29 no.6 Teraoka,Y.;A.Yamashita;N.Yamazoe
  14. Chem. Lett. Teraoka,Y.;A.Yamashita;N.Yamazoe
  15. Introduction to principles heterogeneous catalysis Thomas,J.M.;W.J.Thomes
  16. IEC. Prod. Res. Develop. v.22 Wong,W.C.K.Nobe