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METHOD FOR SYNTHESIS OF PRECURSOR OF SILICOALUMINOPHOSPHORIC ACID MOLECULAR SIEVE, PRECURSOR OBTAINED THEREBY, AND APPLICATIONS OF SAID PRECURSOR TO PROVIDE SAID SIEVE
METHOD FOR SYNTHESIS OF PRECURSOR OF SILICOALUMINOPHOSPHORIC ACID MOLECULAR SIEVE, PRECURSOR OBTAINED THEREBY, AND APPLICATIONS OF SAID PRECURSOR TO PROVIDE SAID SIEVE
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机译:硅铝磷酸盐分子筛前体的合成方法,由此获得的前体以及提供该前体的所述前体的应用
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摘要
PURPOSE: To synthesize a precursor of a molecular sieve by heating a reaction mixture contg. water, sources of aluminum, silicon and phosphorus and an org. skeleton structure modifier at a specified temp. and separating the crystallized solid. CONSTITUTION: Water, sources of aluminum, silicon and phosphorus and an org. skeleton structure modifier are blended to prepare a reaction mixture. This mixture is heated at =100 deg.C under autogenous pressure for a sufficient time to cause crystallization and the crystallized solid is separated to synthesize a precursor of a molecular sieve of the silicoaluminophosphate type. In this case, it is necessary to incorporate hydrogen fluoride as a source of fluoride anions into the reaction mixture. An amorphous silica-alumina gel or a crystalline aluminosilicate is suitable for use as the sources of aluminum and silicon.
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