In this study, diatomite based materials were investigated as a support filter for silica particle coating. Thesilica sol for coating was synthesized by a stöber process. The diatomite support was dry-pressed at 10 MPa and sin-tered at 1200˚C for 1 hour. The coating sol was prepared as a mixture of EtOH and silica sol. The diatomite supportwas coated by a dip-coating process. Silica coated diatomite filter was sintered at 1000~1200˚C for 1 hour. The largestpore size was decreased with increasing concentration ratio of coating sol. The gas and water permeability of silicacoated diatomite decreased with increasing of concentration ratio of the coating sol.

• 배병서(한국기계연구원 부설 재료연구소 엔지니어링세라믹스연구실) | Byung-Seo Bae
• 하장훈(한국기계연구원 부설 재료연구소 엔지니어링세라믹스연구실) | Jang-Hoon Ha
• 송인혁(한국기계연구원 부설 재료연구소 엔지니어링세라믹스연구실) | In-Hyuck Song Corresponding Author
• 한유동(한국기계연구원 부설 재료연구소 엔지니어링세라믹스연구실) | Yoo-Dong Hahn