한국수소및신에너지학회논문집 (Transactions of the Korean hydrogen and new energy society)

  • 제34권5호
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  • Pages.535-548
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  • 2023
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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H2-O2 재결합 반응을 통한 M/γ-Al2O3 촉매의 산소 제거 성능과 산소 결손이 촉매에 미치는 영향

Oxygen Removal Performance of M/γ-Al2O3 Catalyst through H2-O2 Recombination Reaction and the Effect of Oxygen Vacancies on the Catalyst

  • 김태준 (충남대학교 공과대학 응용화학공학과) ;
  • 푸트라쿠마르 발라 (충남대학교 공과대학 응용화학공학과) ;
  • 신대섭 (충남대학교 공과대학 응용화학공학과) ;
  • 송유정 ((주)더이엔 연구개발부) ;
  • 김성탁 (충남대학교 공과대학 응용화학공학과)
  • TAEJUN KIM (Department of Chemical Engineering and Applied Chemistry, Chungnam National University College of Engineering) ;
  • PUTRAKUMAR BALLA (Department of Chemical Engineering and Applied Chemistry, Chungnam National University College of Engineering) ;
  • DAESEOB SHIN (Department of Chemical Engineering and Applied Chemistry, Chungnam National University College of Engineering) ;
  • YOUJUNG SONG (R&D Division, TheEN Co., Ltd.) ;
  • SUNGTAK KIM (Department of Chemical Engineering and Applied Chemistry, Chungnam National University College of Engineering)
  • 투고 : 2023.09.21
  • 심사 : 2023.10.23
  • 발행 : 2023.10.30
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⟨ 이전 논문 다음 논문 ⟩

초록

The intermittent nature of renewable energy is a challenge to overcome for safety and stable performance in water electrolysis systems linked to renewable energy. Oxygen removal using the catalyst is suitable for maintaining the oxygen concentration in hydrogen below the explosive level (4%) even in intermittent power supply. Metals such as Pd, Pt, and Ni are expected to be effective materials due to their hydrogen affinity. The oxygen removal performance was compared under high hydrogen concentration conditions by loading on γ-Al2O3 with high reactivity and large surface area. The characteristics of the catalyst before and after the reaction were analyzed through X-ray diffraction, transmission electron microscope, H2-temperature programmed reduction, X-ray photoelectron spectroscope, etc. The Pd catalyst that showed the best performance was able to lower 2% oxygen to less than 5 ppm. Changes in catalyst characteristics after the reaction indicate that oxygen vacancies are related to oxygen removal performance and catalyst deactivation.

키워드

과제정보

본 연구는 2023년도 중소벤처기업부의 기술개발사업(RS-2023-00257435)과 2021년도 교육부의 재원으로 한국연구재단의 지자체-대학 협력기반 지역혁신 사업의(2021RIS-004) 지원을 받아 진행되었으며 이에 감사드립니다.

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