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含氟体系下亲水性ZSM-5沸石分子筛膜的制备及其性能

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Indexed by:期刊论文

Date of Publication:2015-12-01

Journal:无机材料学报

Included Journals:SCIE、EI、PKU、ISTIC、CSCD、Scopus

Volume:30

Issue:11

Page Number:1167-1171

ISSN No.:1000-324X

Key Words:ZSM-5沸石分子筛膜;大孔α-Al2O3载体;变温热浸渍法;渗透汽化;氟体系

Abstract:用变温热浸渍法在廉价大孔α-Al2O3的载体管上涂覆大小晶种引入平整均匀的晶种层,随后在无有机模板剂的含氟体系下通过二次水热生长法制备了亲水性ZSM-5沸石分子筛膜。实验考察了小晶种液浓度对形成晶种层及ZSM-5沸石分子筛膜形貌和性能的影响。并将制备的ZSM-5沸石分子筛膜分别用于渗透汽化异丙醇脱水和乙酸脱水体系中。结果显示,小晶种液浓度为0.2wt%时,制备的ZSM-5沸石分子筛膜在75℃下对10wt%水/异丙醇和10wt%水/乙酸混合物体系均具有优良的分离性能,其渗透通量分别为3.64 kg/(m2·h)和0.61 kg/(m2·h),分离因子分别达3204和1321。

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