Preparation method of ZSM-12 molecular sieve

摘要: The invention discloses a preparation method of ZSM-12 molecular sieve. comprises the following steps: dissolving organic base, aluminum source and structure-directing agent (R) shown in formula (I) water uniformly mixing raw materials, wherein which is defined description, n equal to 4-6; adding silicon into prepared mixed solution, materials prepare colloid or solid-liquid mixture, molar ratios reactants are that: SiO2/Al2O3 10-50, H2O/SiO2 5-50, R/SiO2 0.05-0.3, BA/SiO2 0.2-1.5, M2O/SiO2 0.02-0.3, M2O an alkali metal oxide, BA resulting mixture subjected first-stage hydrothermal crystallization reaction for 1-7 days at 80-140 DEG C under self-generated pressure, then heated 150-250 second-stage 5-14 solid product collected dried. sieve by has six-petal snowflake shape relatively good catalytic performance.