화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Clean Technology, Vol.24, No.4, 280-286, December, 2018
DOI10.7464/ksct.2018.24.4.280  Export Citation
TiO2와 Al2O3의 기상 VOCs 흡착 특성 평가 및 다양한 구조체로의 성형을 통한 열적 내구성 확보에 관한 연구
A Study on the Evaluation of Adsorption Characteristics of VOCs on TiO2 and Al2O3 and Investigation of the Thermal Durability by Molding Various Structures
황인혁, 이상문1, 김성수1, †
  • 경기대학교 일반대학원 환경에너지공학과, 경기도 수원시 영통구 광교산로 154-42(이의동)
  • 1경기대학교 환경에너지공학과, 경기도 수원시 영통구 광교산로 154-42(이의동)
In-Hyuck Hwang, Sang Moon Lee1, and Sung Su Kim1, †
  • Department of Environmental Energy Engineering, Graduate school of Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16227, Korea
  • 1Department of Environmental Energy Systems Engineering, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16227, Korea
E-mail:
초록
본 연구에서는 금속산화물 2종, TiO2 분말과 Al2O3 분말을 이용하여 건식 조건에서의 기상 VOCs 흡착 성능을 평가하였으며, BET분석과 암모니아 in-situ FT-IR 분석을 통해 비표면적, 표면 산점을 분석하고 성능과의 상관성을 평가하였다. 그 결과 TiO2 분말, Al2O3 분말은 각각 317.6 m2 g-1, 64 m2 g-1의 비표면적을 갖으며, TiO2 분말의 경우 표면에 다수의 산점이 관찰되었다. 두 금속 산화물 분말을 이용하여 기상 VOCs 흡착 성능을 평가한 결과, 비표면적이 크고 다수의 산점을 보유한 TiO2 분말이 비교적 우수한 흡착 성능을 나타내었다. 특히 비표면적이 흡착성능에 직접적인 영향을 미치는 것으로 판단되며, 산점에 의한 영향에 대해서는 추가적인 연구가 요구된다. 우수한 흡착 성능을 나타낸 TiO2를 기반으로 honeycomb, hollow fiber, disc의 성형체로 제조 한 결과, 분말보다 흡착 성능은 낮았으나 적용성 측면에서 유리하며 제조공정의 특성상 우수한 열적내구성을 갖는 polymeric disc 흡착제의 경우, 수회의 고온 탈착공정 후에도 흡착 성능을 안정적으로 유지함을 확인하였다.
In this study, the adsorption performance of vapor phase VOCs under dry conditions was evaluated by using two metaloxides, TiO2 powder and Al2O3 powder. BET analysis and ammonia in-situ FT-IR analysis were used to analyze specific surface area and surface acid site. As a result, TiO2 powder and Al2O3 powder had a specific surface area of 317.6 m2 g-1 and 64 m2 g-1, respectively. In the case of TiO2 powder, many acid sites were observed on the surface. As a result of evaluating the vapor phase VOCs adsorption performance using two metal oxide powders, TiO2 powder having a relatively large specific surface area and a large number of acid sites exhibited relatively good adsorption performance. In particular, it is considered that the specific surface area directly affects the adsorption performance, and further study on the effect of the acid site is required. Based on the TiO2 exhibited excellent adsorption performance, it manufactured into various forms of honeycomb, hollow fiber and disc. As a result, the adsorption performance was lower than that of the powder, but it is advantageous in view of applicability. In addition, it was confirmed that the disc adsorbent having excellent thermal durability due to the characteristics of the manufacturing process stably maintains adsorption performance even at a high temperature desorption process several times.
Keywords:Volatile organic compounds;Metal oxide;Adsorbents
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