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활성탄 담지 Co-B/C, Co-P-B/C 촉매를 이용한 NaBH4 가수분해 반응

Hydrolysis Reaction of NaBH4 Using Activated Cabon Supported Co-B/C, Co-P-B/C Catalyst

  • 오소형 (순천대학교 화학공학과) ;
  • 김유겸 (순천대학교 화학공학과) ;
  • 배효준 (순천대학교 화학공학과) ;
  • 김동호 (순천대학교 화학공학과) ;
  • 변영환 (순천대학교 화학공학과) ;
  • 안호근 (순천대학교 화학공학과) ;
  • 박권필 (순천대학교 화학공학과)
  • Oh, Sohyeong (Department of Chemical Engineering, Sunchon National University) ;
  • Kim, Youkyum (Department of Chemical Engineering, Sunchon National University) ;
  • Bae, Hyojune (Department of Chemical Engineering, Sunchon National University) ;
  • Kim, Dongho (Department of Chemical Engineering, Sunchon National University) ;
  • Byun, Younghwan (Department of Chemical Engineering, Sunchon National University) ;
  • Ahn, Ho-Geun (Department of Chemical Engineering, Sunchon National University) ;
  • Park, Kwon-Pil (Department of Chemical Engineering, Sunchon National University)
  • 투고 : 2018.08.09
  • 심사 : 2018.09.12
  • 발행 : 2018.10.01

초록

휴대용 고분자전해질 연료전지의 수소발생용으로써 $NaBH_4$는 많은 장점을 갖고 있다. 본 연구에서는 활성탄 담지 Co-B/C, Co-P-B/C 촉매의 $NaBH_4$ 가수분해 특성에 대해 연구하였다. 촉매의 BET 표면적, 수소 수율, $NaBH_4$ 농도 영향, 촉매 내구성 등을 실험하였다. 활성탄에 담지시킴으로써 BET 면적이 비담지 촉매에 비해 2~3배 증가해 $500m^2/g$ 이상이 되었다. 활성탄 담지 촉매의 수소발생이 비담지 촉매보다 더 안정적이었다. 20 wt% $NaBH_4$에서 활성화 에너지가 59.4 kJ/mol로 Co-P-B/FeCrAlloy 촉매 보다 14% 낮았다. 활성탄 담지 촉매가 비담지 촉매에 비해 촉매 손실이 1/3~1/2로 감소해 활성탄에 촉매를 담지시킴으로써 내구성을 향상시킬 수 있었다.

키워드

Sodium borohydride;Carbon supported catalyst;Co-P-B;Durability;Fuel cell

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