IRON-CONTAINING SILICATE HAVING ZSM-5 CRYSTALLINE STRUCTURE, ITS METHOD OF PREPARATION, AND ITS USE IN HYDROCARBON CONVERSIONS

摘要

ABSTRACTA crystalline iron-containing silicate has the X-raydiffraction pattern of ZSM-5 and a crystallographic latticecontaining silicon and iron, wherein at least 60% by weight of theiron contained by said silicate is in positions of tetrahedralsubstitution in the lattice and wherein the molar ratio of SiO2 toFe2O3 in said crystalline iron containing silicate is at least30.