Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Preparation and Characterization of Porous Catalyst for Formaldehyde Removal using Domestic Low-grade Silica

국내산 저품위 실리카를 이용한 포름알데히드 제거용 다공성 촉매의 제조 및 특성

  • Han, Yosep (Resource Recovery Research Center, Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Jeon, Ho-Seok (Resource Recovery Research Center, Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Kim, Seongmin (Resource Recovery Research Center, Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM))
  • 한요셉 (한국지질자원연구원 광물자원연구본부 자원회수연구센터) ;
  • 전호석 (한국지질자원연구원 광물자원연구본부 자원회수연구센터) ;
  • 김성민 (한국지질자원연구원 광물자원연구본부 자원회수연구센터)
  • Received : 2021.03.29
  • Accepted : 2021.04.14
  • Published : 2021.04.30
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Abstract

This study investigated formaldehyde (HCHO) removal by preparing porous supports using domestic low-grade silica coated with Co-ZSM5 and Cu-ZSM5 as the catalysts. First, the sample of the raw material for the support contained 90% silica with quartz crystal phase, which was confirmed as low-grade silica. According to Energy-dispersive X-ray spectroscopy (EDS) and Fourier-transform infrared spectroscopy (FT-IR) analyses, the catalysts, Co-ZSM5 and Cu-ZSM5, were successfully coated on the surface of the porous silica supports. During the removal test of HCHO using the prepared Co-ZSM5 and Cu-ZSM5 coated beads, depending on the reaction temperature, the Co-ZSM5 coated beads exhibited higher removal efficiencies (>97%) than the Cu-ZSM5 beads at 200 ℃. The higher efficiency of the Co-ZSM5 coating may be attributed to its superior surface activity properties (BET surface area and pore volume) that lead to the favorable HCHO decomposition. Therefore, Co-ZSM5 was determined to be the suitable catalyst for removing HCHO as a coating on a porous support fabricated using domestic low-grade silica.

본 연구에서는 촉매 Co-ZSM5 및 Cu-ZSM5 코팅이 적용된 저품위 실리카를 사용하여 다공성 지지체를 제조하여 포름 알데히드(HCHO) 제거를 수행하였다. 먼저, 지지체 원료는 실리카가 90 % 함유되어 있어 저급 실리카로 확인되었다. EDS 및 FT-IR 분석에 따르면 Co-ZSM5 및 Cu-ZSM5 촉매는 다공성 실리카 지지체의 표면에 성공적으로 코팅되었다. 제조 된 Co-ZSM5 및 Cu-ZSM5 코팅 된 비드를 사용하여 HCHO의 제거 테스트 결과, 반응 온도에 따라 Co-ZSM5 코팅 된 비드는 Cu-ZSM5 비드보다 높은 제거 효율 (> 97 %)을 나타났다. 200 ℃. 전자의 더 높은 효율은 우수한 표면 활성 특성 (BET 표면적 및 기공 부피)에서 기인 할 수 있으며, 아마도 유리한 HCHO 분해로 이어질 수 있다. 따라서 Co-ZSM5 비드는 국산 저급 실리카를 사용하여 제작 된 다공성 지지체를 사용하여 HCHO 제거 용 촉매에 적합한 것으로 판단된다.

Keywords

References

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