다양한 Ball Mill Method에 의해 제조된 V/TiO2 촉매의 NH3-SCR 활성 증진연구

김동호; 서필원; 홍성창; Dong Ho Kim; Phill Won Seo; Sung Chang Hong

Clean Technology, Vol.23, No.1, 64-72, March, 2017

DOI10.7464/ksct.2017.23.1.064 Export Citation

다양한 Ball Mill Method에 의해 제조된 V/TiO2 촉매의 NH3-SCR 활성 증진연구

Enhanced NH3-SCR Activity of V/TiO22 Catalyst Prepared by Various Ball Mill Method

김동호, 서필원¹, 홍성창^{2, †}

경기대학교 일반대학원 환경에너지공학과, 16227 경기 수원시 영통구 이의동 산 94
¹(주)세라컴 기술연구소, 31532 충남 아산시 득산동 312-26
²경기대학교 환경에너지공학과, 16227 경기 수원시 영통구 이의동 산 94

Dong Ho Kim, Phill Won Seo¹, and Sung Chang Hong^{2, †}

Department of Environmental Energy Systems Engineering, Graduate school of Kyonggi University, 94 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi, 16227, Korea
¹Department of Research & Development, Ceracomb Co., Ltd., 312-26 Deuksan-dong, Asansi, Chungnam 31532, Republic of Korea
²Department of Environmental Energy Systems Engineering, Kyonggi University, 94 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi, 16227, Korea

E-mail:

초록

본 연구에서는, 150 ~ 400 °C 영역에서 NOx를 제어하기 위한 ball mill 기법을 사용한 선택적 환원촉매(SCR)의 연구를 수행하였다. 제조된 촉매들의 구조적 특성 및 산화가 특성을 확인하기 위하여 XRD, BET, XPS 분석을 수행하였다. 다양한 ball mill 기법에 의해 제조된 촉매는 250 °C 이하의 온도구간에서의 활성의 차이를 보였다. 이중 가장 우수한 탈질효율을 갖는 촉매를 기준으로, ball mill 시간이 3시간일 때 가장 높은 활성을 나타내었다. XPS 분석 결과, vanadium의 비 화학양론종의 존재 및 원자 수 증가가 활성증진에 유리하게 작용한 것으로 나타났다. 또한 O2 on-off 실험을 통해 격자산소량의 양과 탈질효율과의 상관관계를 나타내었고, 이는 서로 비례관계에 있음을 확인하였다.

In this study, the selective catalytic reduction (SCR) for NOx removal was investigated in the temperature range of 150 ~ 400 °C. XRD, BET and XPS analyses to determine the structural properties and valence state characteristics of the catalyst were performed. Various ball mill method were shown to a difference in activity at a low temperature below 250 °C. Based on the catalyst with the highest denitrification efficiency, the ball mill time was the best result at 3 h. As a result of XPS analysis, the presence of the non-stoichiometric vanadium species and the increase of the number of atoms were attributed to a positive effect in the SCR reaction. it was confirmed that the correlation between the amount of lattice oxygen and the denitrification efficiency through the O2 on-off experiment, and it was in a proportional relationship to each other.

Keywords:NOx;NH3-SCR;Catalyst;Vanadium;Ball mill

[References]

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Wang Q, Madix RJ, Surf. Sci., 474, L213 (2001)
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[Referenced By]

[1] Park SU, Lee YH, Atmos. Environ., 36, 619 (2002)

[2] Trong On D, Kapoor MP, Thibault E, Gallot JE, Lemay G, Kaliaguine S, Microporous Mesoporous Mater., 20, 107 (1998)

[3] Oelerich W, Klassen T, Bormann R, J. Alloy. Compd., 322, L5 (2001)

[4] Gajovica A, Stubicarrb M, Ivandaa M, Furica K, J. Mol. Struct., 563, 315 (2001)

[5] Dutta H, Pradhan SK, Mater. Chem. Phys., 77(3), 868 (2003)

[6] Hu J, Qin H, Sui Z, Lu H, Mater. Lett., 53, 421 (2002)

[7] Ettireddy PR, Ettireddy N, Mamedov S, Boolchand P, Smirniotis PG, Appl. Catal. B: Environ., 76(1-2), 123 (2007)

[8] Kamolphop U, Taylor SFR, Breen JP, Burch R, Delgados JJ, Chansai S, Hardacre C, Hengrasmee SZ, James SL, Appl. Catal., 1(10), 1257 (2011)

[9] Wong GS, Kragten DD, Vohs JM, Surf. Sci., 452, L293 (2000)

[10] Cristallo G, Roncari E, Rinaldo A, Trifiro F, Appl. Catal. A: Gen., 209(1-2), 249 (2001)

[11] Bosch H, Janssen F, Catal. Today, 2, 369 (1988)

[12] Cheng K, Liu J, Zhang T, Li J, Zhao Z, Wei Y, Jiang G, Duan A, J. Environ. Sci., 10, 2106 (2014)

[13] Bukhtiyarov VI, Catal. Today, 56(4), 403 (2000)

[14] Wang Q, Madix RJ, Surf. Sci., 474, L213 (2001)

[15] Kobayashi M, Kuma R, Masaki S, Sugishima N, Appl. Catal. B: Environ., 60(3-4), 173 (2005)

[16] Boningari T, Koirala R, Sminiotis PG, Appl. Catal. B: Environ., 140-141, 289 (2013)

[17] Moulder JF, Stickle WF, Sobol PE, Bomben KD, Perkin-Elmer Corporation, “Handbook of X-ray Photoelectron Spectroscopy,” USA (1992).