비귀금속계 금속을 이용한 일산화질소 산화 촉매 연구

신중훈; 홍성창; JungHun Shin; SungChang Hong

Applied Chemistry for Engineering, Vol.32, No.4, 385-392, August, 2021

DOI10.14478/ace.2021.1045 Export Citation

비귀금속계 금속을 이용한 일산화질소 산화 촉매 연구

A Study of Nitric Oxide Oxidation Catalyst Using Non-noble Metals

신중훈, 홍성창 ^{1, †}

경기대학교 일반대학원 환경에너지공학과
¹경기대학교 환경에너지공학과

JungHun Shin, and SungChang Hong^{1, †}

Department of Environmental Energy Engineering, Graduate school of Kyonggi University, Suwon 16227, Korea
¹Department of Environmental Energy Engineering, Kyonggi University, Suwon 16227, Korea

E-mail:

초록

본 연구에서는 Co/CeO2 촉매 제조 시 코발트의 첨가 함량 및 세리아의 소성온도에 따른 물리.화학적 특성 및 일산화질소 산화 성능을 비교하였다. Co/CeO2 촉매의 구조적 특성은 XRD, BET 분석을 통하여 확인하였으며, 코발트 표면밀도에 따른 표면 결정 상태를 제안하였다. 또한, Raman, XPS 분석을 통하여 촉매의 산화가 및 산소 결합 상태를 확인하 였으며, 일산화질소 산화 성능과의 관계를 제안하였다. H2-TPR 분석을 통하여 촉매의 특성 변화에 따른 산소전달특성 을 확인하였으며, 일산화질소 산화를 위한 촉매의 활성점(Co3+)을 제안하였다.

In this study, impact of Co proportion and calcination temperature of ceria on the Co/CeO2 was analyzed by comparing nitrogen monoxide oxidation performance of various catalysts and their physico-chemical properties. The structural properties of each catalyst were studied by XRD and BET analysis, and the surface crystal states of cobalt were proposed according to the surface density. Oxidation states of elements were observed through Raman and XPS analysis, and the relationship between typical oxidation states and nitrogen monoxide oxidation performance was designed. Through H2-TPR, oxygen-transferring capacity due to changes in the characteristics of catalysts were identified, and activation sites (Co3+) for oxidation were suggested.

Keywords:Nitric oxide;NO;Oxidation;Co/CeO2;Cobalt

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[18] Zhu Z, Lu G, Zhang Z, Guo Y, Guo Y, Wang Y, ACS Catal., 6, 1154 (2013)

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[20] Wang HF, Kavanagh R, Guo YL, Guo Y, Lu GZ, Hu P, J. Catal., 296, 110 (2012)

[21] Xie X, Li Y, Liu ZQ, Haruta M, Shen W, Nature, 458, 764 (2009)

[22] Xu JN, Lu GZ, Guo Y, Guo YL, Gong XQ, Appl. Catal. A: Gen., 535, 1 (2017)

[23] Woods MP, Gawade P, Tan B, Ozkan US, Appl. Catal. B: Environ., 1-2, 28 (2010)

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