SYNTHESIS, CHARACTERIZATION AND CATALYTIC PROPERTIES OF SAPO-11, -31 AND -41 MOLECULAR SIEVES

摘要

Medium pore molecular sieves SAPO-11, SAPO-31 and SAPO-41 have been synthesized using di-n-propylamine and diethylamine as the organic template. They have been characterized by various methods such as X-ray powder diffraction, solid-state MAS NMR spectroscopy, elemental analysis and FT-IR spectroscopy in the framework and hydroxyl region. Catalytic activities of these materials in the esterification of phthalic anhydride with various alcohols have been studied. The catalytic activity of these material is in order of SAPO-41 > SAPO-11 > SAPO-31.