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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Thermal Decomposition of Ammonia Borane for $H_2$ Release

수소 발생을 위한 암모니아 보레인의 열분해

  • Lee, Ji-Hong (School of Chemical Engineering, Sungkyunkwan Univ.) ;
  • Lee, Hyun-Joo (Clean Energy Research Center, Korea Institute of Science and Technology) ;
  • Ahn, Byoung-Sung (Clean Energy Research Center, Korea Institute of Science and Technology) ;
  • Kim, Chang-Soo (Clean Energy Research Center, Korea Institute of Science and Technology)
  • 이지홍 (성균관대학교 화학공학) ;
  • 이현주 (한국과학기술연구원 청정에너지 연구센터) ;
  • 안병성 (한국과학기술연구원 청정에너지 연구센터) ;
  • 김창수 (한국과학기술연구원 청정에너지 연구센터)
  • Published : 2008.08.30
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Abstract

Thermal decomposition of Ammonia Borane have been investigated with various analytical methods including TGA, TP-MS, DSC. By-products such as aminoborane and borazine were identified during hydrogen release by TGA, TP-MS analysis. $H_2$ release amount was measured at each temperature isothermally, which resulted in 7 wt% $H_2$ release at 130$^{\circ}C$. Moreover, higher temperature enhanced hydrogen release kinetics leading to shortened induction period from 20 min at 95$^{\circ}C$ to 0 min at 130$^{\circ}C$. Melting and decomposition at close temperature (4$^{\circ}C$ difference) caused the formation of thin foam during hydrogen release. Suppression of by-products and thin foam formation during hydrogen release is suggested as critical issues to realize chemical hydrogen storage system with ammonia borane.

Keywords

References

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