Synthesis and Characterization of Manganese Phosphate Aluminosilicate Molecular Sieve

Abstract

Using conventional hydrothermal synthesis method, n-butylamine as an organic templating agent (C4H11N), phosphoric acid, tetraethyl orthosilicate, aluminum hydroxide, and manganese acetate as starting material, by adjusting the amount of the crystallization conditions and reactants pH, phosphate synthesized manganese-containing aluminosilicate zeolite. The molar ratio between the raw material is n (P): n (Si): n (Al): n (Mn): n (H2O): n (C4H11N) = (1.8 ~ 2.2): (0.15 ~ 0.2): (0.8 ~ 0.9): (0.6 ~ 0.8): (2.4 ~ 4.5): (1.1 ~ 1.4), pH in the range of 5.30 ~ 5.50, the crystallization temperature was 150 °C ~ 170 °C, the crystallization time is 24 ~ 30 h, the curve indicated by DSC-TG, synthesized molecular sieve obtained with a more good thermal stability.