【摘要】 采用常压回流的微波加热体系,在多孔γ-Al₂O₃载体上成功地制备出NaSOD、NaA和NaX分子筛膜。XRD和SEM表征结果表明,多次合成有利于提高膜的致密程度。在微波场中,NaA分子筛的成膜性要优于NaSOD和NaX分子筛。3次合成后,3种分子筛膜上单组分H₂/N₂的理想分离选择性分别为3.00、4.00和2.58;H₂的渗透率分别为5.1×10^-7、6.8×10^-7和6.2×10^-7mol/（Pa·m²·s）,显示出较强的渗透能力和一定的分离能力。更多还原

【Abstract】 Under atmospheric pressure and in a state of reflux, NaSOD, NaA and NaX zeolite membranes were successfully synthesized on porous y-Al2O3 by using microwave heating. As indicated by XRD and SEM, the multi-stage synthesis was propitious for improving the integrity of zeolite membrane. In microwave heating synthesis, NaA zeolites could form compact zeolite membrane on porous 7-Al2O3 better than NaSOD and NaX zeolites. The ideal H2/N2 selectivity on NaSOD, NaA and NaX zeolite membranes after three-stage synthesis were 3.00,4.00,2. 58,respectively, while the permeances of H2 were 5.1×10~7,6.8×10~7 and 6. 2 × 10 ~ 7 mol/( Pa · m2 · s) , respectively. The results showed that zeolite membranes synthesized by using microwave heating provided high permeating performance and sustainable selectivity.更多还原