04-P-09-Pure SAPO, CoAPSO and ZnAPSO ATO-like molecular sieves through optimized synthesis procedures

Publisher Summary This chapter discusses the optimized synthesis procedures of pure SAPO, CoAPSO, and ZnAPSO ATO-like molecular sieves. Pure SAPO-31, CoAPSO-31, and ZnAPSO-31 are hydrothermally synthetized in the presence of dipropylamine, using a 3 3 factorial experiment, in the temperature range 200–210°C for 24–27 hours. Strong interactions are observed between the parameter effects, but no synergy phenomena occur. SAPO-31 can be obtained within relatively wide parameter ranges. Pure CoAPSO-31 and ZnAPSO-31 can be synthesized using small silicon (Si) content in the starting gels.