化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (7) : 129-133. DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.030

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

刘生鹏, 肖志超, 李浩阳, 孙国锋, 熊芸

作者信息 +

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

Liu Shengpeng, Xiao Zhichao, Li Haoyang, Sun Guofeng, Xiong Yun

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文章历史 +

Received		Published
2019-04-03		2020-07-20
Issue Date	Revised Date
2022-11-01	2019-04-03

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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。

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.

关键词

3-氨基丙基三乙氧基硅烷 / γ-(甲基丙烯酰氧基)丙基三甲氧基硅烷 / SAPO-34分子筛膜 / 气体分离

Key words

KH-550 / KH-570 / SAPO-34 zeolite membrane / gas separation

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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

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