Monolithic porous glasses with controlled mesopore size
Monolithic porous glasses with controlled mesopore size
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具有受控中孔尺寸的整体多孔玻璃
DOI：
10.1051/jp4:2000713
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
J. Phalippou
中科院分区：
文献类型：
--
作者：
P. Dieudonné;S. Calas;C. Fehr;J. Primera;T. Woignier;P. Delord;J. Phalippou
介孔溶胶-凝胶玻璃可以作为主体材料来研究限制对流体性质的影响。描述了一种基于硅胶的特殊干燥过程，然后通过热处理使其部分致密的方法。获得了孔隙率超过50%、孔径大小均匀、表面粗糙度可控的单块介孔玻璃。用氮气吸附-脱附和小角X射线散射技术研究了材料的多孔织构、固体织构和内表面粗糙度。得到了孔径分布较窄的样品，半高半宽小于2 nm，平均孔径小于25 nm。
Mesoporous sol-gel glasses may play the role of host materials to study the effect of confinement on fluid properties. A method based on a peculiar drying procedure of silica gels, followed by their partial densification by a heat treatment is described. Monolithic mesoporous glasses with a porosity exceeding 50%, a well defined pore size and a controlled surface roughness are obtained. N 2 adsorption-desorption and Small Angle X-ray Scattering techniques are used to study the porous and solid texture, and the inner surface roughness of these materials. Various samples of narrow pore size distribution with half width at half height under 2nm, and mean pore size below 25nm are obtained.