Synthesis and structural characterization of organically-modified microporous silicates

被引：2

作者：

Babonneau, F ^{[1
]}

Leite, L ^{[1
]}

Fonlupt, S ^{[1
]}

Ribot, F ^{[1
]}

Bergogne, L ^{[1
]}

Roux, C ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, Paris, France

来源：

ORGANIC/INORGANIC HYBRID MATERIALS | 1998年 / 519卷

关键词：

D O I：

10.1557/PROC-519-363

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Organically-modified silicates have been synthesized from RSi(OEt)(3) (R = CH3, C2H5, C8H17, CH2=CH, C6H5) and TEOS under acidic conditions, in the presence of cethyltrimethylammonium (CTAB). The introduction of RSiO1,5 units with R/Si = 0.2, affects the ordering of the expected hexagonal silicate phase, except when R = C6H5 The sample containing phenyl functions was thus submitted to surfactant extraction; calcination at 350 degrees C appears to be more efficient, and less disruptive for the network ordering than a washing procedure in ethanol. Nitrogen adsorption measurements on the hexagonally ordered calcined sample that still contains phenyl groups, yields a type I isotherm, typical of a microporous solid. BET method leads to a surface area of 1000 m(2)/g and a pore volume of 0.32 cm(3)/g.

引用

页码：363 / 368

页数：6