Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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A Study of Nitric Oxide Oxidation Catalyst Using Non-noble Metals

비귀금속계 금속을 이용한 일산화질소 산화 촉매 연구

  • Shin, JungHun (Department of Environmental Energy Engineering, Graduate school of Kyonggi University) ;
  • Hong, SungChang (Department of Environmental Energy Engineering, Kyonggi University)
  • 신중훈 (경기대학교 일반대학원 환경에너지공학과) ;
  • 홍성창 (경기대학교 환경에너지공학과)
  • Received : 2021.05.12
  • Accepted : 2021.05.31
  • Published : 2021.08.10
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Abstract

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.

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 확인하였으며, 일산화질소 산화 성능과의 관계를 제안하였다. H2-TPR 분석을 통하여 촉매의 특성 변화에 따른 산소전달특성을 확인하였으며, 일산화질소 산화를 위한 촉매의 활성점(Co3+)을 제안하였다.

Keywords

Acknowledgement

이 저서는 2019년도 경기대학교 연구년 수혜로 연구되었음.

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