KINETIC ASPECTS OF KAOLINITE ACID DISSOLUTION .2. MINERAL AFTER MECHANOCHEMICAL TREATMENT

被引：1

作者：

AGLIETTI, EF

LOPEZ, JMP

PEREIRA, E

机构：

[1] Centro de Tecnologia de Recursos, Minerales y Ceramica, Argent, Centro de Tecnologia de Recursos Minerales y Ceramica, Argent

来源：

REACTIVITY OF SOLIDS | 1986年 / 2卷 / 1-2期

关键词：

CHEMICAL REACTIONS - Reaction Kinetics - SOLIDS - Porosity;

D O I：

10.1016/0168-7336(86)80062-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The kinetics and mechanism of acid dissolution of two kaolinites with different degrees of crystallinity were studied. These minerals were obtained through mechanochemical treatment of a well crystallized kaolinite. The parameters obtained through a nucleation and growth model (rate constant, pre-exponential factor and apparent activation energy) are analyzed. The reaction rates are strongly dependent on the concentration of superficial defects created through the mechanochemical treatment. Cation-exchange capacity is used as a representative parameter to describe the observed increase in reaction rates.

引用

页码：35 / 44

页数：10