MOLECULAR-SIEVES UTILIZATION IN CATALYTIC PROCESSES .6. STRUCTURAL CLAYS

The paper deals with a new type of materials with molecular proprietie s but different structure in principle and having larger pores in comp arison with classical zeolite molecular sieves. After settling down th e scope of the pillared clays the paper describes the types of clays t hat can be pillared (or cross-linked), the components that can be used as pillaring agents, as well as the properties and characteristics of the sieves produced. The various industrial processes in which the pi llared clays are efficiently applied are briefly presented at the and of the note.