Layered oxides containing interlayer polymeric oxides and their synthesis

Abstract From the Canadian patent

Catalytically active layered oxide products of high, thermal stability and surface area having interlayer pillars containing polymeric oxides, such as polymeric silica and alumina are prepared by ion exchanging a layered metal oxide such as a, layered silicate, with organic cations to spread the layers apart. A first compound such as tetraethylorthosilicate capable of forming, a polymeric oxide, and a second compound such as aluminium, isopropoxide, capable of forming catalytically active sites in the interlayer pillars are thereafter introduced between the layers. The resulting product is treated e.g. by hydrolysis, to form the, polymeric oxide and produce the pillars between the metal …