Cross-linked smectites. IV. Preparation and properties of hydroxy/aluminium-pillared Ce- and La-montmorillonites and fluorinated 165NH4+-montmorillonites.

Abstract

Cross-linked smectites (CLS) also called pillared interlayer clays (PILC) are molecular sieves of considerable porosity, thermal stability and residual ion-exchange capacity. A systematic study is reported of CLS products prepared by controlled cross-linking of Ce3+- and La3+-montmorillonites, and of fluorinated 160NH4+-montmorillonites having different F contents.-D.F.B.