Investigation on zeolite membrane performance deterioration during separation processes

分离过程中沸石膜性能恶化的研究

• 批准号: 20560709
• 负责人: INOUE Tomoya
• 金额: $ 3万
• 依托单位: National Institute of Advanced Industrial Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560709/
• 关键词: 膜分離; 劣化メカニズム; ゼオライト; ゼオライト膜; 脱水; 脱水プロセス; 劣化; エステル化; プロセス強化

We prepared various kinds of zeolite membranes for hydrophobic nature as well as hydrophilic nature. Each membranes were evaluated mainly in pervaporation mode, using a real-time gas analyzer that we purchased by the grant. It revealed the performance decay profile for each membrane. The performance decay was due to hydrophilic transformation of zeolite crystalline composing the hydrophobic zeolite membrane by hydrolysis (for hydrophobic zeolite membrane) or hydrophilic transformation of zeolite crystalline composing the hydrophilic zeolite membrane by ion exchange (for hydrophilic zeolite membrane). For hydrophilic membrane we tested, such as philipsite, merlinoite, and chabazite, the zeolite framework was maintained during the contact by weak acid such as acetic acid, while close contact with strong protonic acid such as sulfonic acid deteriorated the framework. The membrane performance was recovered reversibly as long as the framework was maintained by ion exchange procedure. In this case, the membrane performance had been deteriorated due to protonated zeolite crystalline formation during the pervaporation operation in close contact with acidic solution.

我们制备了各种类型的分子筛膜的疏水性以及亲水性。每种膜主要在渗透蒸发模式下进行评估，使用我们通过赠款购买的实时气体分析仪。它揭示了每个膜的性能衰减曲线。性能下降是由于组成疏水沸石膜的沸石晶体通过水解（对于疏水沸石膜）或组成亲水沸石膜的沸石晶体通过离子交换（对于亲水沸石膜）的亲水性转变。对于我们测试的亲水性膜，例如菲立普石、merlinoite和菱沸石，沸石骨架在与弱酸例如乙酸接触期间得以保持，而与强质子酸例如磺酸的紧密接触使骨架劣化。只要通过离子交换过程保持膜的骨架结构，膜的性能可以可逆地恢复。在这种情况下，由于在与酸性溶液紧密接触的渗透蒸发操作期间质子化沸石晶体的形成，膜性能已经劣化。

项目成果

チャバサイト(CHA)膜の合成と浸透気化特性

菱沸石（CHA）膜的合成及渗透汽化性能

• 发表时间: 2009
• 作者: 清住嘉道;ほか
• 通讯作者: ほか

Zeolite Membrane for Process Intensification-From the Application Point of view (Keynote)

用于过程强化的沸石膜——从应用的角度来看（主题演讲）

• 发表时间: 2008
• 作者: 井上朋也;清住嘉道;井上朋也
• 通讯作者: 井上朋也

The Research and Development of Compact Chemical Processes based on Inorganic Membrane and Micro Reactor Technology(総説)

基于无机膜与微反应器技术的紧凑化学工艺研究与发展（综述）

• 发表时间: 2009
• 期刊: Journal of the Research Institute for Catalysis 30
• 作者: 井上朋也;長谷川泰久;長瀬多加子;清住嘉道;根本雄太;西出利一;水上富士夫;井上朋也
• 通讯作者: 井上朋也

天然モルデナイト中空糸多孔体の特性と応用

天然丝光沸石中空纤维多孔材料的特性及应用

• 发表时间: 2010
• 作者: 長瀬多加子;阿部千枝;志村瑞己;長谷川泰久;清住嘉道;花岡隆昌
• 通讯作者: 花岡隆昌

Influence of acid on the permeation properties of NaA-type zeolite membranes

• DOI: 10.1016/j.memsci.2009.11.052
• 发表时间: 2010-03-01
• 期刊: JOURNAL OF MEMBRANE SCIENCE
• 影响因子: 9.5
• 作者: Hasegawa, Y.;Nagase, T.;Mizukami, F.
• 通讯作者: Mizukami, F.