Pillaring Processes of Smectites with and Without Tetrahedral Substitution
Pillaring Processes of Smectites with and Without Tetrahedral Substitution
复制标题
有和没有四面体取代的蒙皂石的柱撑过程
DOI：
10.1346/ccmn.1987.0350201
复制
发表时间：
1987
影响因子：
2.2
通讯作者：
J. Fripiat
中科院分区：
文献类型：
--
作者：
D. Plée;L. Gatineau;J. Fripiat
蒙脱石和贝得石与铝多羟基聚合物的柱撑首先通过单体和/或二聚氢氧化铝物质使阳离子交换容量饱和而发生，然后插入所谓的Al13-多羟基聚合物。粘土浆料的固体浓度必须大于 0.01% (w/w)，才能产生约 18 Å 的基底间距。因此，浆料中必须存在相当大的粘土类晶团聚体，以产生沿 c 轴排列的乱层结构。柱状蒙脱石和柱状贝得石之间的主要区别似乎是在富含四面体取代的粘土的层间空间内柱的分布更加有序。最近的 27Al 和 21Si 高分辨率核磁共振数据表明，这种较高程度的有序性是由于四面体取代位点附近的铝柱和粘土片的反应所致。
Pillaring of montmorillonite and beidellite with aluminum polyhydroxypolymer takes place first by the saturation of the cation-exchange capacity by monomeric and/or dimeric aluminum hydroxide species and then the intercalation of the so-called Al13-polyhydroxypolymer. The clay slurry must have a solid concentration greater than 0.01% (w/w) to produce a basal spacing of about 18 Å. Sizeable clay tactoids must therefore exist in the slurry in order to produce a turbostratic structure ordered along the c axis. The main difference between pillared montmorillonite and pillared beidellite seems to be a more ordered distribution of pillars within the interlamellar space of the clays that are rich in tetrahedral substitutions. Recent 27Al and 21Si high-resolution nuclear magnetic resonance data suggest that this higher degree of ordering results from the reaction of the aluminic pillars and the clay sheet near the sites of the tetrahedral substitutions.
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
通讯作者：
--