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在多孔α-Al₂O₃陶瓷管上制备β沸石膜的研究

Studies on the Preparation of Beta Zeolite Membrane on Porous α-Al₂O₃ Tubes

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【Author】 SHAO Guo-lin1,WANG Ji-ping1,LIU Chang2,ZHOU Zhi-hui1,WANG Jin-qu1(1.State Key Laboratory of Fine Chemicals,Institute of Adsorption and Inorganic Membrane,Dalian University of Technology,Dalian 116012,China;2.Fushun Research Institute of Petroleum and Petrochemicals,Fushun 113001,China)

【机构】大连理工大学精细化工国家重点实验室吸附与无机膜研究所；抚顺石化研究院；大连理工大学精细化工国家重点实验室吸附与无机膜研究所大连116012；大连116012；抚顺113001；

【摘要】以TEAOH(四乙基氢氧化铵)为模板剂,采用预涂晶种的二次水热合成法在平均孔径3～5μm的多孔α-Al2O3管状载体的外表面制备了连续致密的β沸石膜,并且用SEM,XRD和气体渗透对所合成的膜进行了表征,结果表明,所合成的膜连续致密,与载体管结合良好,没有大的缺陷。更多还原

【Abstract】 The beta zeolite membranes were prepared on seeded α-Al2O3 substrate tubes with a mean pore size of 3-5 μm by the method of secondary hydrothermal growth using TEAOH as templates.The prepared membranes were characterized with XRD,SEM and nitrogen permeance.XRD patterns show that the prepared membranes possess typical beta zeolite structure.SEM images indicated that a continuous and dense zeolite membrane with around 10 μm in thickness is formed on the seeded supports.Nitrogen permeation experiments proved that the permeation governed by surface diffusion.Thus the prepared membranes have no large defects.更多还原