【作者】 祝刚； 王金渠； 鲍仲瑛；

【Author】 ZHU Gang,WANG Jinqu,BAO Zhongying (Institute of Adsorption and Inorganic Membrane,School of Chemical Engineering, Dalian University of Technology,Dalian 116012,China)

【机构】 大连理工大学化工学院吸附与无机膜研究所；

【摘要】 采用水热合成法,首次以吡咯烷为模板剂的体系在长为250 mm,孔径为3～5μm的α-Al₂O₃陶瓷管外表面直接原位合成出无缺陷沸石膜;XRD,SEM及H₂,N₂单组分气体渗透表征测试表明,载体管上的晶粒均匀规整,互锁状生长,厚度约12～14μm,为典型的ZSM-35型沸石膜;H₂和N₂在膜内外压差为60～160 kPa范围内（25℃时）,渗透速率分别为6.37×10^-6～7.16×10^-6 mol/（m²·s·Pa）和1.45×10^-6～1.94×10^-6 mol/（m²·s·Pa）,同时具有较高的H₂/N₂选择因数,最大值达到4.48,超过努森扩散最大分离因数.更多还原

【Abstract】 In the system of pyrrodine as templates,ZSM - 35 type zeolite membrane was hydrothermally synthesized in situ for the first time on the outer surface of a porousα- Al₂O₃ support tube with a length of 250 mm and a pore size of 3⁵μm;by XRD and SEM,characterization of the synthesized membrane shows that the synthesized membrane is a typical ZSM - 35 zeolite membrane,with no visible defects on its membrane surface, on which the zeolite crystals grow interlockedly and compactly,and that the outer surface of the support tube is completely covered with ZSM - 35 crystal layers with a thickness of about 12～14μm;and at 25℃,H₂ and N₂ single component permeance tests of the membrane permeance reach 10 ⁵ magnitude with the highest H₂/N₂ selective factor 4.48 above the ideal Knudsen diffusion.更多还原