Adsorption Isotherm of Water Vapor and Its Large Hysteresis on Highly Ordered Mesoporous Silica

Porous Texture and Surface Character of

Porous Texture and Surface Character of Dehydroxylated and Rehydroxylated MCM-41 Mesoporous Silicas—Analysis of Adsorption Isotherms of Nitrogen Gas and Water Vapor

✍ Hiromitu Naono; Masako Hakuman; Takashi Tanaka; Nobuki Tamura; Kazuyuki Nakai 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 209 KB

Four samples of MCM-41 mesoporous silicas whose average pore diameters are 2.4, 2.8, 3.2, and 3.6 nm were prepared using sodium orthosilicate and cationic surfactants of [CH(3)(CH(2))(n)N(CH(3))(3)]X (n=11, 13, 15, 17). These four samples were calcined at 1123 K in vacuo to obtain the dehydroxylated