【摘要】 以硅铝干凝胶为硅源和铝源,氢氧化钠为碱源,采用类固相法快速合成了P型分子筛,并通过X射线衍射（XRD）、扫描电镜（SEM）等手段对产品进行了表征分析。结果表明,硅铝干凝胶的组成n_SiO2/n_Al2O3=5,晶化时间和晶化温度分别为3 h、140℃,原料的组成n_Na2O/n_SiO2=0.26、n_H2O/n_SiO2=18.51时,可制备形貌均一、结晶良好的P型分子筛产品。与传统水热法相比,该方法极大地减少了合成过程的用水量,缩短了晶化时间,提高了产品的钙镁离子交换性能,从整体上优化了P型分子筛的合成工艺。更多还原

【Abstract】 The synthesis of zeolite P by like-solid phase method was studied,using silicon aluminum xerogels as silicon source and aluminum source,and the sodium hydroxide as the alkali source.The products were characterized and analyzed by methods such as X-ray diffraction（XRD） and scanning electron microscopy（SEM）.The results showed that the zeolite P product with uniform morphology and good crystallinity can be prepared,when the n_SiO2/n_{Al2 O3} of the silicon aluminum xerogels was 5,the crystallization time and crystallization temperature were 3 h and 140℃,and the n_{Na2 O}/n_SiO2 and n_{H2 O}/n_SiO2 of the raw material were 0.26 and 18.51,respectively.Compared with the traditional hydrothermal method,the like-solid phase method greatly reduces the amount of water used in the synthesis process,shortens the crystallization time,improves the ion exchange performances of Ca²⁺and Mg²⁺,and overall optimizes the synthesis process of zeolite P.更多还原