공업화학 (Applied Chemistry for Engineering)

  • 제30권6호
  • /
  • Pages.731-736
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  • 2019
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  • 1225-0112(pISSN)
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  • 2288-4505(eISSN)
한국공업화학회 (The Korean Society of Industrial and Engineering Chemistry)
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Pt/TiO2의 HS 산화반응 및 SO2 피독과 재생 방안 연구

A Study on the H2 Oxidation over Pt/TiO2, SO2 Poisoning and Regeneration

  • 이동윤 (경기대학교 일반대학원 환경에너지공학과) ;
  • 김성수 (경기대학교 환경에너지공학과)
  • Lee, Dong Yoon (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University) ;
  • Kim, Sung Su (Department of Environmental Energy Engineering, Kyonggi University)
  • 투고 : 2019.11.14
  • 심사 : 2019.11.19
  • 발행 : 2019.12.10
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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/TiO2에 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.

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