Synthesis of SAPO-34 molecular sieves by varying synthetic parameters and study of its effect on Biginelli reaction

Sapo-34 being a microporous crystalline material; its morphology is greatly influenced by synthetic parameters. the aim of present investigation is to employ sapo-34 synthesized under varying synthetic conditions to study its effect for biginelli reaction. sapo-34 molecular sieve was successfully synthesized in presence of four different organic templates (dea,tea,teaoh and morpholine) and two different silica sources (colloidal silica and fumed silica). to achieve the sapo-34 phase in its purest form,the template concentration was optimized by eliminating the competing phases. synthesized catalyst samples were characterized by xrd,sem,tg,ftir and total acidity analysis. the dea and morpholine templated sapo-34 samples (colloidal silica as silica source) were found to be more acidic and hence were tested for synthesis of biginelli condensation products such as dihyropyrimidinons. the reaction is studied further in terms of catalyst concentration and solvent effect.