멤브레인 (Membrane Journal)

  • 제34권1호
  • /
  • Pages.50-57
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  • 2024
  • /
  • 1226-0088(pISSN)
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  • 2288-7253(eISSN)
한국막학회 (The Membrane Society of Korea)
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α-Al2O3 지지체를 이용한 Pd-Ag-Cu 수소 분리막의 제조 및 기체투과 성능

Preparation and Gas Permeation Performance of Pd-Ag-Cu Hydrogen Separation Membrane Using α-Al2O3 Support

  • 한성우 (동국대학교 화공생물공학과) ;
  • 신민창 (동국대학교 화공생물공학과) ;
  • 장학룡 (동국대학교 화공생물공학과) ;
  • 황재연 (동국대학교 화공생물공학과) ;
  • 고민영 (동국대학교 화공생물공학과) ;
  • 김시은 (동국대학교 화공생물공학과) ;
  • 정창훈 ((주)하이젠에너지) ;
  • 박정훈 (동국대학교 화공생물공학과)
  • Sung Woo Han (Department of Chemical and Biochemical Engineering, Dongguk University) ;
  • Min Chang Shin (Department of Chemical and Biochemical Engineering, Dongguk University) ;
  • Xuelong Zhuang (Department of Chemical and Biochemical Engineering, Dongguk University) ;
  • Jae Yeon Hwang (Department of Chemical and Biochemical Engineering, Dongguk University) ;
  • Min Young Ko (Department of Chemical and Biochemical Engineering, Dongguk University) ;
  • Si Eun Kim (Department of Chemical and Biochemical Engineering, Dongguk University) ;
  • Chang Hoon Jung (Hygenenergy Co., Ltd.) ;
  • Jung Hoon Park (Department of Chemical and Biochemical Engineering, Dongguk University)
  • 투고 : 2023.12.21
  • 심사 : 2023.12.28
  • 발행 : 2024.02.29
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초록

본 실험에서는 α-Al2O3 지지체에 무전해도금을 이용하여 Pd-Ag-Cu 분리막을 제조하였다. Pd, Ag, Cu는 각각 무전해도금을 통해 지지체 표면에 코팅하였고, 합금의 형성을 위해 무전해도금 중간에 H2, 500℃의 조건에서 18 h 동안 열처리를 진행하였다. 이를 통해 제조된 Pd-Ag-Cu 분리막은 SEM을 통해 표면을 관찰하였으며, Pd 분리막의 두께는 7.82 ㎛, Pd-Ag-Cu 분리막의 두께는 3.54 ㎛로 측정되었다. EDS와 XRD 분석을 통해 Pd-Ag-Cu 합금이 Pd-78%, Ag-8.81%, Cu-13.19%의 조성으로 형성된 것을 확인하였다. 기체투과 실험은 H2 단일가스와 H2/N2 혼합가스에서 실험을 진행하였다. H2 단일가스에서 측정한 수소 분리막의 최대 H2 flux는 Pd 분리막의 경우 450℃, 4 bar에서 74.16 ml/cm2·min이고, Pd-Ag-Cu 분리막의 경우 450℃, 4 bar에서 113.64 ml/cm2·min인 것을 확인하였고, H2/N2 혼합가스에서 측정한 separation factor의 경우 450℃, 4 bar에서 각각 2437, 11032의 separation factor가 측정되었다.

In this experiment, Pd-Ag-Cu membrane was manufactured using electroless plating on an α-Al2O3 support. Pd, Ag and Cu were each coated on the surface of the support through electroless plating and heat treatment was performed for 18 h at 500℃ in H2 in the middle of electroless plating to form Pd alloy. The surface of the Pd-Ag-Cu membrane was observed through Scanning Electron Microscopy (SEM), and the thickness of the Pd membrane was measured to be 7.82 ㎛ and the thickness of the Pd-Ag-Cu membrane was measured to be 3.54 ㎛. Energy dispersive X-ray spectroscopy and X-ray diffraction analysis confirmed the formation of a Pd-Ag-Cu alloy with a composition of Pd-78wt%, Ag-8.81wt% and Cu-13.19wt%. The gas permeation experiment was conducted under the conditions of 350~450℃ and 1~4 bar in H2 single gas and H2/N2 mixed gas. The maximum H2 flux of the hydrogen separation membrane measured in H2 single gas is 74.16 ml/cm2·min at 450℃ and 4 bar for the Pd membrane and 113.64 ml/cm2·min at 450℃ and 4 bar for the Pd-Ag-Cu membrane. In the case of the separation factor measured in H2/N2 mixed gas, separation factors of 2437 and 11032 were measured at 450℃ and 4 bar.

키워드

과제정보

본 결과물은 환경부의 재원으로 한국환경산업기술원의 대기환경 괸리기술 사업화 연계 기술개발사업의 지원을 받아 연구되었습니다.(과제번호: RE202103386, 과제명: 블루 수소충전소용 수소 정제분리 시스템 실증 기술개발-Technology development of hydrogen purification membrane separation demonstration for blue hydrogen station)

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