Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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An Optimization of Synthesis Method for High-temperature Water-gas Shift Reaction over Cu-CeO2-MgO Catalyst

고온수성가스전이반응 적용을 위한 Cu-CeO2-MgO 촉매의 제조방법 최적화

  • I-Jeong Jeon (Department of Chemical Engineering, Wonkwang University) ;
  • Chang-Hyeon Kim (Department of Chemical Engineering, Wonkwang University) ;
  • Jae-Oh Shim (Department of Chemical Engineering, Wonkwang University)
  • 전이정 (원광대학교 화학공학과) ;
  • 김창현 (원광대학교 화학공학과) ;
  • 심재오 (원광대학교 화학공학과)
  • Received : 2023.12.14
  • Accepted : 2023.12.18
  • Published : 2023.12.31
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Abstract

Recently, there has been a growing interest in clean hydrogen energy that does not emit carbon dioxide during combustion due to the increasing focus on carbon neutral. Research related to hydrogen production continues, and in this study, we applied waste-derived synthesis gas to the water-gas shift reaction to simultaneously treat waste and produce high-purity hydrogen. To enhance catalytic activity in the high-temperature water-gas shift (HT-WGS) reaction, magnesium was used as a support material alongside cerium. Cu-CeO2-MgO catalysts were synthesized, with copper acting as the active component for the HT-WGS reaction. A study on the catalytic activity based on the preparation method was conducted, and the Cu-CeO2-MgO catalyst prepared by impregnation method exhibited the highest activity in the HT-WGS reaction. The observed superior performance of the Cu-CeO2-MgO catalyst prepared through the impregnation method can be attributed to its significantly higher oxygen storage capacity and amount of active Cu species.

최근 탄소중립과 관련하여 연소 시 이산화탄소 배출이 없어 청정한 수소에너지에 대한 관심이 증가하고 있다. 이에 따라 수소 생산에 관련된 연구가 계속되고 있으며 본 연구에서는 폐기물을 처리함과 동시에 고순도 수소를 생산하기 위해 폐기물 유래 합성가스를 수성가스전이반응에 적용하였다. 마그네슘을 세륨과 함께 지지체로 사용하여 고온수성가스전이(HT-WGS)반응에서 촉매의 활성을 향상시키고자 하였다. HT-WGS 반응의 활성물질로 구리를 사용해 Cu-CeO2-MgO 촉매를 제조하였으며, 제조방법에 따른 촉매활성 연구를 진행하였다. HT-WGS 반응 결과 함침법으로 제조된 Cu-CeO2-MgO 촉매가 가장 높은 활성을 보였으며, 이는 가장 높은 산소 저장능과 많은 활성 Cu 종을 가지는 특성에 기인한 결과이다.

Keywords

Acknowledgement

본 과제(결과물)는 2023년도 교육부의 재원으로 한국연구재단의 지원을 받아 수행된 지자체-대학 협력기반 지역혁신 사업의 결과입니다(2023RIS-008).

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