Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Effect of Active Metal Loading on Catalytic Activity of V2O5/TiO2 Catalysts

V2O5/TiO2 촉매의 활성금속 함량이 촉매 활성에 미치는 영향

  • Jang, Younghee (Department of Environmental Energy Engineering, Graduate School of Kyonggi University) ;
  • Kim, Sung Chul (Department of Environmental Energy Engineering, Kyonggi University) ;
  • Kim, Sung Su (Department of Environmental Energy Engineering, Kyonggi University)
  • 장영희 (경기대학교 일반대학원 환경에너지공학과) ;
  • 김성철 (경기대학교 환경에너지공학과) ;
  • 김성수 (경기대학교 환경에너지공학과)
  • Received : 2022.07.18
  • Accepted : 2022.09.26
  • Published : 2022.10.10
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Abstract

In this study, the activity test and characterization were performed to evaluate the hydrogen sulfide removal characteristics using a V/TiO2 catalyst at room temperature. The optimal vanadium loading was 10 wt%, and the durability was greater than 60 minutes at 60~80% relative humidity. The Brunauer-Emmett-Teller (BET) surface area and raman spectroscopy results confirmed that the structure of the vanadium site exposed to the surface was a dominant factor in catalyst activity. From Scanning Electron Microscope (SEM), Energy Dispersive Spectroscopy (EDS) and X-ray crystallography (XRD) analyses, it was found that sulfur can be accumulated on the catalyst surface, which results in a decrease in durability under catalytic activity tests. Therefore, it is judged that a combined process of catalytic oxidation and regeneration is needed.

본 연구에서는 V/TiO2 촉매를 사용하여 황화수소 상온 제거 특성을 평가하기 위해 촉매 활성 실험 및 특성 분석을 수행하였다. 최적 바나듐 함량은 10 wt%였고, 상대습도 60~80% 조건에서 60분 이상의 내구성을 보였다. BET 및 raman 분석을 통해, 표면에 노출된 바나듐의 구조가 V/TiO2 촉매 활성의 지배적인 요인인 것으로 나타났다. 또한 SEM, EDS 그리고 XRD 분석은 촉매 표면에 생성물인 황이 축적될 수 있음을 보였으며, 결과적으로 촉매의 내구성이 감소되었다. 따라서 촉매 산화와 재생 공정의 연계가 필요할 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 2022학년도 경기대학교 대학원 연구원장학생 장학금 지원에 의하여 수행되었음.

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