作者: ALEXANDER MORONTA
DOI: 10.1016/S1573-4285(04)80046-2
关键词:
摘要: This chapter focuses on several topics including (1) general aspects of clays' structure, (2) isomorphous substitution in clay minerals, (3) cation exchange capacity clays, (4) migration, (5) swelling capacity, (6) acidity, (7) acid activation process, (8) ion activation, (9) pillars formation, (10) clay-organic interaction, and (11) acid-activated organoclays. Clay minerals are the most abundant sedimentary mineral group. They predominate colloidal fractions soils, sediments, rocks, waters, classified as phyllosilicates (usually hydrous aluminosilicates). efficient adsorbents for removal organic pollutants from water when they modified with cations because their hydrophobicity high surface area good materials that catalyze many reactions, activated, either polar or non-polar media. Another type heterogeneous catalyst based clays is pillared (PILCs), which porosity, reactivity, selectivity, thermal stability also widely applied to a variety reactions.