超增溶自组装原位合成ZSM-5纳米分子筛

采用超增溶胶团法制备纳米ZSM-5分子筛。考察体系水含量、乳化剂用量、晶化温度和焙烧温度等因素对合成分子筛产品的粒径、晶体形貌、孔径、孔容和比表面积等的影响，并采用BET、XRD和TEM等手段对其进行表征。结果表明，制备纳米ZSM-5分子筛的最佳条件：n（H₂O）∶n（SiO₂）=90,乳化剂（RHP）质量分数为10%,晶化温度180 ℃,焙烧温度500 ℃。制得的粒子平均粒径（50～70） nm,大多数粒子为球形，粒径分布较窄，呈单分散且微粒不易团聚。

In-situ synthesis of ZSM-5 nanoparticle zeolite via supersolubility micelles

ZSM-5 zeolites were synthesized by in-situ synthesis of supersolubility micelles. Influence of water and surfactant content, crystalization temperature and calcination temperature on the particle size, pore size, pore volume, surface area and crystal morphology was investigated by BET, XRD and TEM. The optimal synthesis condition for ZSM-5 zeolite was obtained as follows: water-to-silica molar ratio 90, mass percentage of surfactant=10%, crystallization temperature 180 ℃,calcination temperature 500 ℃. The product prepared had average particle size of (50-70) nm, spherical appearance and narrow particle size distribution, with single layer dispersion of the particles.