Pt/TiO2 촉매의 물리화학적 특성이 NH3-SCO 반응활성에 미치는 영향

신중훈; 김동호; 홍성창; Jung Hun Shin; Dong Ho Kim; Sung Chang Hong

Applied Chemistry for Engineering, Vol.28, No.3, 279-285, June, 2017

DOI10.14478/ace.2016.1116 Export Citation

Pt/TiO2 촉매의 물리화학적 특성이 NH3-SCO 반응활성에 미치는 영향

The Selective Catalytic Oxidation of Ammonia: Effect of Physicochemical Properties on Pt/TiO2

신중훈, 김동호, 홍성창 ^{1, †}

경기대학교 일반대학원 환경에너지공학과
¹경기대학교 환경에너지공학과

Jung Hun Shin, Dong Ho Kim, and Sung Chang Hong^{1, †}

Department of Environmental Energy Engineering, Graduate School of Kyonggi University, 94 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi-do 16227, Korea
¹Department of Environmental Energy Engineering, Kyonggi University, 94 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi-do 16227, Korea

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초록

본 연구에서는 200~350 ℃의 범위에서 NH3를 제어하기 위한 선택적 촉매 산화법(SCO)의 연구를 수행하였다. 제조된 촉매들의 물리화학적 특성을 확인하기 위하여 XRD, XPS 분석을 수행하였다. 열처리 조건에 따른 촉매 의 반응활성은 수소로 환원시킨 촉매가 소성한 촉매보다 우수한 활성을 나타냈으며, XPS 분석을 통하여 환원촉매의 산화가 비율은 주로 Pt2+와 Pt0가 존재하는 것을 확인할 수 있었다. 또한 환원온도에 따른 Pt/TiO2 촉매의 반응활성을 비교해본 결과 700 ℃에서 환원한 촉매가 가장 우수한 NH3 전환율을 나타냈으나, N2로의 전환율은 600 ℃에서 환원한 촉매가 가장 우수한 것을 확인하였다.

In this study, the study of the selective catalytic oxidation (SCO) for controlling the NH3 at 200~350 ℃ range was investigated. Physicochemical properties of the catalysts were determined using XRD and XPS analysis. In the case of catalytic activity according to thermal treatment condition, the reduction catalyst showed better activity than that of using the calcination catalyst. It was confirmed that the valence state of reduction catalyst was mainly Pt2+ and Pt0 as analyzed by XPS. Also, when comparing the reaction activities of Pt/TiO2 catalysts according to the reduction temperature, the NH3 conversion of the catalyst reduced at 700 ℃ showed the most excellent activity. However, the best activity of NH3 conversion to N2 was obtained for the catalyst reduced at 600 ℃.

Keywords:NH3;TiO2;catalyst;SCO;Pt

[References]

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[Related Articles]

[1] Gang L, Anderson BG, van Grondelle J, van Santen RA, van Gennip WJH, Niemantsverdriet JW, Kooyman PJ, Knoester A, Brongersma HH, J. Catal., 206(1), 60 (2002)

[2] Amblard M, Burch R, Southward BWL, Appl. Catal. B: Environ., 22(3), 159 (1999)

[3] Lee JY, Kim SB, Hong SC, Chemosphere, 50, 1115 (2003)

[4] Lippits MJ, Gluhoi AC, Nieuwenhuys BE, Catal. Today, 137, 446 (2008)

[5] Carabineiro SAC, Matveev AV, Gorodetskii VV, Nieuwenhuys BE, Surf. Sci., 555, 83 (2004)

[6] Long RQ, Yang RT, J. Catal., 207(2), 158 (2002)

[7] Il’chenko NI, Russ. Chem. Rev., 45, 1119 (1976)

[8] Al’tshuler OV, Vinogradova OM, Seleznev VA, Probl. Kinet. Catal., 15, 56 (1973)

[9] Wollner A, Lange F, Schmeltz H, Knozinger H, Appl. Catal. A: Gen., 94, 181 (1993)

[10] Bankmann MR, Brand R, Enger BH, Ohmer J, Catal. Today, 14, 225 (1992)

[11] Kondratenko VA, Baerns M, Catal. Today, 121, 160 (2007)

[12] Reddy BM, Khan A, Yamada Y, Kobayashi T, Loridant S, Volta J, J. Phys. Chem., 107, 5162 (2003)

[13] Kim SS, Park KH, Hong SC, Appl. Catal. A: Gen., 398(1-2), 96 (2011)

[14] Huang HB, Leung DYC, J. Catal., 280(1), 60 (2011)

[15] Kim GJ, Kwon DW, Hong SC, J. Chem. Eng. Jpn., 120, 17996 (2016)

[16] Aramendia MA, Colmenares JC, Marinas A, Marinas JM, Moreno JM, Navio JA, Urbano FJ, Catal. Today, 128, 235 (2006)

[17] Abid M, Paul-Boncour V, Touroude R, Appl. Catal. A: Gen., 297(1), 48 (2006)