CHEMICAL MODIFICATION OF CLAYS: SCIENTIFIC AND TECHNOLOGICAL CHALLENGES FOR OBTAINING NEW VALUE-ADDED PRODUCTS.

被引:52
作者
Teixeira-Neto, Erico [1 ]
Teixeira-Neto, Angela Albuquerque [1 ]
机构
[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP, Brazil
来源
QUIMICA NOVA | 2009年 / 32卷 / 03期
关键词
bentonite; pillared clays; controlled release; CATION-EXCHANGE CAPACITY; SOCIETY SOURCE CLAYS; CONTROLLED-RELEASE; PILLARED CLAYS; BASE-LINE; MONTMORILLONITE; MINERALS; BENTONITE; CATALYSTS; NANOCOMPOSITES;
D O I
10.1590/S0100-40422009000300023
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
CHEMICAL MODIFICATION OF CLAYS: SCIENTIFIC AND TECHNOLOGICAL CHALLENGES FOR OBTAINING NEW VALUE-ADDED PRODUCTS. Chemical modification of clays is possible due to their ion-exchange and adsorption capacities, which allows the adjustment of the physicochemical properties of the surfaces of their layers. This modification makes possible the use of clays to produce a great number of new materials, which range from coarse applications such as oil based drilling fluids to refined applications such as pharmaceutical products. This article intends to expose where there is still space for research and investment aiming at the performance improvement of clay-based materials.
引用
收藏
页码:809 / 817
页数:9
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