Effect of precursor and surfactant nature on geometrical characteristics of mesoporous silicas

• Опубліковано в: : Поверхность
• Дата: 2002
• Автори: Pavlenko, A.N., Yanishpolskii, V.V., Tertykh, V.A., Il'in, V.G., Leboda, R., Skubiszewska-Zieba, J.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут хімії поверхні ім. О.О. Чуйка НАН України 2002
• Теми: Surface chemistry of silica and related sorbents
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/126348
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Effect of precursor and surfactant nature on geometrical characteristics of mesoporous silicas / A.N. Pavlenko, V.V. Yanishpolskii, V.A. Tertykh, V.G. Il'in, R. Leboda, J. Skubiszewska-Zieba // Поверхность. — 2002. — Вип. 7-8. — С. 19-25. — Бібліогр.: 11 назв. — англ.

Bimodal mesoporous silicas and materials MCM-41 type were synthesized with the use as a template cationic surfactants distinguished by a length of the alkyl chain. Fumed silica, tetraethyl orthosilicate as well as of mixture these compounds were applied as a silicate precursor. Obtained samples have been characterized by the powder X-ray diffraction technique and adsorption measurements. Specific surface area, pore diameter, pore size distribution was determined from nitrogen ad(de)sorption isotherms at 77 K for the silicas prepared. The products with bimodal pore distribution have not ordered structure and contain macropores and mesopores, whose sizes are typical for MCM-41 materials. Effect of surfactant and precursor nature on the geometrical features of the ordered structure of MCM-41 type and bimodal porous materials was studied.