화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.30, No.6, 731-736, December, 2019
DOI10.14478/ace.2019.1093  Export Citation
Pt/TiO2의 H2 산화반응 및 SO2 피독과 재생 방안 연구
A Study on the H2 Oxidation over Pt/TiO2, SO2 Poisoning and Regeneration
이동윤, 김성수1, †
  • 경기대학교 일반대학원 환경에너지공학과
  • 1경기대학교 환경에너지공학과
Dong Yoon Lee, and Sung Su Kim1, †
  • Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University, 154-42 Gwanggyosanro, Youngtong-gu, Suwon-si, Gyeonggi 16227, Korea
  • 1Department of Environmental Energy Engineering, Kyonggi University, 154-42 Gwanggyosanro, Yountong-ku, Suwon-si, Gyeonggi-do 16227, Korea
E-mail:
초록
본 연구에서는 Pt/TiO2를 파우더 및 허니컴 형태로 제조하고, 촉매의 피독 물질인 SO2에 대한 영향과 재생 방안을 연구하였다. 이에 따라 Pt/TiO2의 SO2 노출 전.후 촉매 활성을 비교하였다. Pt/TiO2의 초기 활성은 주입되는 H2 농도(1~5%)에 비례하며, 촉매의 온도와 H2 전환율이 각각 최대 183 ℃와 95%로 나타났다. 2,800 ppm SO2를 파우더 및 허니컴 Pt/TiO2 에 노출시켰고, 이때 성능이 나타나지 않았고 촉매 표면에 0.69%의 황(S)이 잔류함을 확인하였다. 피독 촉매에 대한 세척 및 열처리 결과, 파우더 촉매는 세척에 의해 96% 이상의 H2 전환율을 나타냈고 허니컴 촉매는 H2 또는 air 분위기의 열처리를 통해 촉매 활성이 재생되어 95% 이상의 H2 전환율이 확인되었다.
In this article, Pt/TiO2 was manufactured in the form of powder and honeycomb, and the influence of SO2, which is a poisonous substance to catalyst, and regeneration method were investigated. The catalytic activity of Pt/TiO2 before and after the exposure to SO2 was also compared. The initial activity of Pt/TiO2 was proportional to the injected H2 concentration (1~5%). And the optimum temperature of the catalyst and conversion rate of H2 were 183 ℃ and 95%, respectively. It was confirmed that when exposing 2,800 ppm of SO2 to the powder and honeycomb Pt/TiO2, the performance of catalyst was not measurable and also 0.69% sulfur (S) remained on the catalyst surface. As a result of the cleaning and heat treatment for the poisoning catalyst, the activity of the powder catalyst exhibited a conversion rate of H2 greater than 96%. Whereas, the honeycomb catalyst showed a conversion rate of H2 greater than 95% when it was regenerated through the heat treatment of H2 or air atmosphere.
Keywords:Noble metal;Platinum;Catalyst poisoning;Catalyst generation;Sulfur dioxide
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