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Studies on Adsorption and Desorption of Ammonia Using Covalent Organic Framework COF-10

Covalent Organic Framework (COF-10)를 이용한 암모니아 흡착 및 탈착에 관한 연구

  • Received : 2016.03.16
  • Accepted : 2016.04.05
  • Published : 2016.06.10

Abstract

Ammonia gas as a hydrogen source has received great attention since the importance of hydrogen gas as a clean energy source increased. However, ammonia is toxic and corrosive to metal such that the absorbent that can store and transport ammonia became an important issue. As an effort to solve this, a large pored covalent organic framework, COF-10 was proposed as an adsorbent for storage and safe transportation of ammonia. During the ammonia adsorption process, boron in COF-10 structure can act as a Lewis acid site and bind with ammonia. In this study, COF was synthesized and its structure was identified by BET, XRD and FT-IR. The adsorption characteristics of COF were investigated by TPD and adsorption isotherm. The COF-10 showed an excellent adsorption capacity for ammonia (9.79 mmol/g) which could be utilized as an ammonia adsorbent.

Keywords

adsorption;ammonia;COF-10;Langmuir-Freundlich

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Acknowledgement

Supported by : 한국환경산업기술원