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Additive Manufacturing Using Ceramic Materials for Atmospheric Purification
H.-D. Kim(김홍대),M.-J. Lee(이명진),M.-J. Kim(김수진),S.-Y. Chun(전승엽),B. Ye(예보라),B. Jeong(정보라) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
Seriousness of particulate matter (PM 2.5, 1.0, 0.1) leads to rigid regulation in atmospheric field due to class 1 cancer-causing agent. Noteworthy fact that most particulate matter is generated by gaseous contaminants is high conversion proportion by nitrogen oxides (NOx) among them. Therefore, selective catalytic reduction (SCR) technology is indispensable for decomposing NOx into harmless products, N₂ and H₂O, because it is also harmful to both environment and living organisms itself. Conventional production process of SCR catalyst use extrusion for honeycomb shape, but it has difficult to rapidly fabricate diverse and complex morphology for improved performance. It is possibly solved by replacing extrusion to 3Dprinting having advantages such as effective short process time, effective economy aspect, and recycle of materials. In this study, catalyst carrier that is manufactured by 3D-printing is coated with SCR slurry of V₂O5-WO₃/TiO₂, commercial composition. Subsequently, performance and properties are characterized by particle size, morphology, catalytic performance in powder and green body state.