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VOC 연소를 위한 상용 촉매의 표면특성 분석 및 온도에 따른 점화특성
박노국(No-Kuk Park),권병찬(Byung Chan Kwon),강도형(Do Hyeong Kang),이태진(Tae Jin Lee),윤대식(Daesik Yun) 한국에너지기후변화학회 2019 에너지기후변화학회지 Vol.14 No.2
In this study, the characteristics of six commercial combustion catalysts for oxidative decomposition of volatile organic compounds (VOCs) causing fine dust pollution were analyzed, and the combustion kinetics of these catalysts were investigated. Two domestic and four Chinese products were tested as a VOCs combustion catalyst. Surface morphology and crystal structure were analyzed by stereomicroscope and X-ray diffraction (XRD). The reaction behavior over the combustion catalysts was measured as a function of ignition temperature. The commercial catalyst was observed to have low uniform active site coated on the surface of most cordierite honeycomb structures except for one domestic catalyst. It was also confirmed that CeO₂ was mostly added to prevent carbon deposition, but solid carbon was deposited on the spent catalyst under reaction conditions in which high concentrations of volatile organic compounds were burned at relatively low temperatures. However, carbon deposition was not formed on the catalyst with a high Si/Al ratio. As a result, it was concluded that the strength of the acidic site over the catalyst is considered to be an important factor.
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