ゾルゲル法による多孔性ZrO_2-SiO_2ガラスの調製 : 細孔特性に及ぼす加水分解・縮重合反応条件の影響(合成)(<特集>ガラス・アモルファス材料及びその材料科学の進展)

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The effect of parameters involved in the sol-gel Fig.6. Weight loss of the ZrO_2-SiO_2 glasses in 2N NaOH solution at 30℃ plotted against immersion time. Preparation of the monolithic porous ZrO_2-SiO_2 glasses on the pore characteristics has been investigated. Followings have been obtained. (1) A high hydrolysis temperature seemed to be favored to form large micropores in the resultant glasses. (2) The surface area (SSA), pore volume (PV) are decreased by increasing heating temperature, while mean pore radius (MPR) remained almost unchanged. (3) The influence of the content of HCl used as a catalyst was most remarkable. As the HCl content becomes higher, the larger MPR resulted. On the basis of above results, the porous monolithic ZrO_2-SiO_2 glasses containing ZrO_2 up to 14.4 mol% have been made via sol-gel reaction at 80℃ using h-value as high as O.5,I-C_3H_7OH as a solvent. The pore size as large as 40-60 A in diameter, SSA and PV ranging from 450 to 550 m^2g^<-1> and 0.4 to O.7 ml・g^<-1>, respectively, have been attained. Those glasses are highly alkaline-resistant compared to the porous SiO_2 glass.
社団法人日本セラミックス協会の論文
1989-03-01