ゲル法シリカの特徴と応用 - tosoh.co.jp

65.. 1 1 .. Na2O nSiO2 H2SO4 nSiO2 H2O Na2SO4.. Sodium Sulfuric Silicate Acid . Drying Silo and Pakaging Process Process Piltration Classification Process Process 1959 . Reaction Milling Presipitated Silica NIPSIL Process . 1999 . 2 . NIPGEL .. Na2O nSiO2 H2SO4 nSiO2 H2O Na2SO4.. 2 . Sodium Sulfuric Silicate Acid Aging and Drying Silo and Washing Process Pakaging Process Process Classification Reaction Process . Gelling Milling Gel Process Silica .. Aerosil . Aerosil .. Reolosil . Cab-O-Sil . Fransil .. Arc Silica . Nipsil . Ultrasil . Hisil .. Zeosil . Tokusil . Carplex . Mizukasil . Sylysia . Syloid WR . Gasil .. Silcron SCM . Mizukasil . Nipgel . 65 . 66 TOSOH Research Technology Review 2001 . 1 . pH . 2 3 4 . 2 .. 1 .. A . pH . D . pH. pH . 3 .. B C SiO 2 20 . 29wt . Sulfuric Sodium acid Silicate reaction pH 7 or pH7-10, Na2SO4 lso Electric Point Dring Final BET Primary Gelation and Three-Dimensional Gel Network Process Producut Specific Silica Surface Particle Area Size Gel Type Silica Area 700 1000.

SiO 2 濃度が15～25wt％と高く、比較的短時間で形成さ れる。図1－（2）に示されるように、反応が早く進行 するので、強いせん断のかかる混合ノズルを用いて反

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