In Situ Preparation, Characterization, and Catalytic Application of Various Amine Functionalized Microporous SAPO-37

A series of monoamine, diamine, and aniline functionalized microporous silicoaluminophosphate molecular sieves (SAPO-37) was prepared by introduction of organo-silane ligand during hydrothermal synthesis. The template was selectively removed by the solvent extraction method in the presence of sodium nitrate salt. The effective removal of the template was evident from FT-IR, and C-13 MAS-NMR studies. The retention of high crystallinity was evident from the powder XRD pattern of the template-removed functionalized SAPO-37 materials. The functionalized materials showed a high surface area in the range of 200-300 m(2)g(-1) with a pore volume of 0.2-0.4 cm(3)g(-1). The functionalized SAPO-37 was found to be a potential catalyst for epoxide ring opening with aniline.