85051 ⎘
Silicon; Compounds thereof; Silicates; Aluminium-containing silicates, i.e. silico-aluminates; Base exchange silicates, e.g. zeolites; Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures containing an element or a compound occluded in the pores of the network, e.g. an oxide already present in the starting reaction mixture