Process for preparing Silica Alumina phosphate molecular sieves (Sapo), catalysts containing these sieves and catalytic dehydration processes using such Catalysts

摘要

It describes a New process to produce a sapo Molecular Sieve, wherein a mixture of a source with a source of P to the digestion stage is subjected to a stirring before the addition of a source and a template.The resulting slurry after the addition of all Chemical Agents is subjected to a pH adjustment followed the usual hydrothermal treatment at a higher temperature in an autoclave. Thus, sapo molecular sieves are obtained, such as sapo - 34 and very pure, highly crystalline, with a very high performance.In addition, the Frogs produced in this way have an exceptional activity in Reactions of dehydration and can be used as an active component of catalysts for the production of valuable products from Methanol dehydration such as, but not limited to, olefins And dimethylether (DME).