科学研究

改性氧化铝表面SAPO-34分子筛膜的制备及性能研究

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  • 武汉工程大学化工与制药学院,绿色化工过程省部共建教育部重点实验室,武汉430073
刘生鹏(1969-),男,博士,教授,博士研究生导师,主要研究方向为化工环保与分离工程。

收稿日期: 2019-04-03

  网络出版日期: 2022-11-01

基金资助

武汉工程大学科学研究基金(K201751)

Preparation and property of SAPO-34 zeolite membrane on the surface of modified Al

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  • School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology,Key Laboratory of Green Chemical Process of Ministry of Education,Wuhan 430073

Received date: 2019-04-03

  Online published: 2022-11-01

摘要

以硅烷偶联剂3-氨基丙基三乙氧基硅烷(KH-550)和γ-(甲基丙烯酰氧基)丙基三甲氧基硅烷(KH-570)作为改性剂,对氧化铝载体表面进行修饰,研究了硅烷偶联剂对氧化铝载体表面SAPO-34分子筛膜结构及性能的影响。SEM图和XRD分析表明,在改性氧化铝载体表面可以形成致密且高纯度的SAPO-34分子筛膜,没有裂缝、针孔或其他缺陷。气体渗透结果表明,载体改性后SAPO-34分子筛膜的混合气体(H2/CO2)分离选择性达到了14.57,与未经载体改性的分子筛膜相比提高了1.87倍。

本文引用格式

刘生鹏, 肖志超, 李浩阳, 孙国锋, 熊芸 . 改性氧化铝表面SAPO-34分子筛膜的制备及性能研究[J]. 化工新型材料, 2020 , 48(7) : 129 -133 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.030

Abstract

The influences of silane coupling agents on the structure and properties of SAPO-34 molecular sieve membrane were studied by modifying the surface of porous Al carrier with two silane coupling agents,3-aminopropyltriethoxysilane (KH-550) and γ-propyltrimethoxysilane (KH-570).SEM images and XRD analysis showed that a dense and pure SAPO-34 zeolite membrane without cracks,pinholes or other defects was formed on the modified porous Al support.The gas permeation results showed that the mixed gas (H2/CO2) separation selectivity of SAPO-34 zeolite membrane after support modification reached 14.57,which was 1.87 times higher than that without support modification.

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