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中文摘要：
采用水热法制备全硅Deca-Dodecasil 3Rhombohedral（DD3R）沸石分子筛晶种,并通过二次生长法在涂覆晶种的α-Al2O3片式支撑体上成功合成DD3R分子筛膜.结合X线衍射仪（XRD）与电子扫描电镜（SEM）,考察晶种球磨处理对颗粒形貌、支撑体表面晶种涂覆以及膜的微结构的影响.单组分气体H2、CO2和SF6的渗透实验表明：采用球磨的晶种所制得膜在500℃下,H2/SF6与H2/CO2的理想选择性分别为11.3和6.7.采用硅烷水解法修饰膜后,在相同条件下所获得H2/SF6与H2/CO2的理想选择性分别为∞和45.8.
英文摘要：
All-silica Deca-Dodecasil 3Rhombohedral（DD3R） zeolite seeds were synthesized by hydrothermal crystallization.DD3R zeolite membranes were then prepared on the seeded disk-shaped α-Al2O3 supports by secondary growth method.The effects of milling treatment of DDR zeolite seeds were investigated in terms of particle morphology,coating quality of support surfaces and microstructure of the as-synthesized membranes with the characterizations of X-ray diffraction（XRD） and scanning electron microscope（SEM）.Single gas permeation experiments of H2,CO2 and SF6 showed that ideal selectivities for H2/SF6 and H2/CO2 were about 11.3 and 6.7 at 500℃ through the membrane synthesized with milled seeds.For the membrane modified by hydrolysis of silane,ideal selectivity of infinity and 45.8 for H2/SF6 and H2/CO2 were achieved under the same testing conditions.
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