中文摘要：

采用溶胶凝胶法，以正硅酸乙酯（TEOS）作为硅源，分别以硝酸铝、氯化铝和硫酸铝作为铝源，制备干凝胶粉体。粉体通过碱激发转化成为粒径较为均一的微米级NaA分子筛晶体。通过X射线衍射（XRD）、红外（FT-IR）、扫描电镜（SEM）等分析手段对合成样品进行分析表征。结果表明，A1（NO3）3·9H2O作为铝源时晶化速率最快，A12（SO4），·18H2O次之。二者的晶化反应不易控制，导致终产物中同时包含有多相杂晶。而以A1C13·6H2O作为铝源时反应较为平缓，能够制备出尺寸更均一且具有较高结晶度的NaA分子筛，是较为理想的铝源。

英文摘要：

The dry gel powder was prepared by means of sol-gel method with tetraethyl orthosilicate （TEOS） as silicon source and different aluminum sources including aluminum nitrate, aluminum chloride and aluminum sulfate. Then the NaA zeolite with uniform size distribution was synthesized by the dry-gel conversion method （ DGC ）. The final crystalline product was characterized by X-ray diffraction （XRD） , Fourier transform infrared spectroscopy （FT-IR） and scanning electron microscopy （SEM）. The results showed that the crystallization rate was fastest when using aluminum nitrate as the aluminum source, followed by aluminum sulfate, which may cause the co-precipitation of several zeolite phases. However, the crystals with uniform size and high crystallinity could be synthesized with aluminum chloride, indicating that it is the ideal aluminum source.