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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Effects of Catalyst Dispersion for Reaction Energy Control on Eco-AZ91 MgH2

Eco-AZ91 MgH2의 반응열 제어에 미치는 촉매 분산 효과

  • SOOSUN LEE (Industry-Academy Cooperation Foundation, Korea National University of Transportation) ;
  • SONG SEOK (Industry-Academy Cooperation Foundation, Korea National University of Transportation) ;
  • TAE-WHAN HONG (Department of Materials Science and Engineering, Korea National University of Transportation College of Engineering)
  • 이수선 (한국교통대학교 산학협력단) ;
  • 석송 (한국교통대학교 산학협력단) ;
  • 홍태환 (한국교통대학교 응용화학에너지공학부 에너지소재공학전공)
  • Received : 2023.09.22
  • Accepted : 2023.11.17
  • Published : 2023.12.30
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Abstract

This study selected Eco-AZ91 MgH2, which shows high enthalpy as a material for this purpose, as the basic material, and analyzed the change in characteristics by synthesizing TiNi as a catalyst to control the thermodynamic behavior of MgH2. In addition, the catalyst dispersion technology using graphene oxide (GO) was studied to improve the high-temperature aggregation phenomenon of Ni catalyst and to secure a source technology that can properly disperse the catalyst. XRD, SEM, and BET analysis were conducted to analyze the metallurgical properties of the material, and TGA and DSC analysis were conducted to analyze the dehydrogenation temperature and calorific value, and the correlation between MgH2, TiNi catalyst, and GO reforming catalyst was analyzed. As a result, the MgH2-5 wt% TiNi at GO composite could lower the dehydrogenation temperature to 478-492 K due to the reduction of the catalyst aggregation phenomenon and the increase in the reaction specific surface area, and an experimental result for the catalyst dispersion technology by GO could be ensured.

Keywords

Acknowledgement

본 연구는 교육부에서 지원하는 한국기초과학지원연구원보조금(2019R1A6C1010047)의연구지원및2023년 한국교통대학교 산학협력단의 지원을 받아 수행하였으며 이에 감사드립니다.

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