分别采用水热法和SiCl4气相法对NaY分子筛进行脱铝改性,作为载体应用于磷钨酸(PW)的原位封装过程.采用XRD、N2物理吸附、ICP-AES和SEM等手段对脱铝改性后NaY分子筛载体结构进行了表征.结果表明,两种脱铝方法在使NaY分子筛硅铝比接近5.5的情况下,水热法比SiCl4气相法脱铝样品的结晶度高、比表面积和孔容更大、微孔所占的比例更高,相同条件下用于磷钨酸的原位封装过程,能获得0.0569g PW/g载体的封装量,显著高于SiCl4气相法处理的样品.
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