This invention relates to a new synthetic porous crystalline material, designated MCM-71, a method for its preparation and its use in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern and has a unique 3-dimensional channel system comprising generally straight, highly elliptical channels, each of which is defined by 10-membered rings of tetrahedrally coordinated atoms, intersecting with sinusoidal channels, each of which is defined by 8-membered rings of tetrahedrally coordinated atoms.

Questa invenzione riguarda un nuovo materiale cristallino poroso sintetico, indicato MCM-71, un metodo per la relativa preparazione ed il relativo uso nella conversione catalitica dei residui organici. Il nuovo materiale cristallino esibisce un modello di diffrazione distintivo dei raggi X ed ha un sistema 3-dimensional unico della scanalatura contenere generalmente diritto, scanalature altamente ellittiche, ciascuno di cui è definita dagli anelli 10-membered degli atomi tetrahedrally coordinati, intersecanti con le scanalature sinusoidali, ciascuno di cui è definito dagli anelli 8-membered degli atomi tetrahedrally coordinati.

 
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