纳米片层状ZSM-5分子筛制备及其对室内环境VOCs吸附性能

张凯; 杨仕超; 罗敏; 吴延恒; 于素英

doi:10.13205/j.hjgc.202001009

纳米片层状ZSM-5分子筛制备及其对室内环境VOCs吸附性能

doi: 10.13205/j.hjgc.202001009

1. 广东省建筑科学研究院集团股份有限公司, 广州 510640;
2. 广州市宏柯源生物科技有限公司, 广州 510760

基金项目:

国家自然科学基金项目（21176084）；广东省建筑科学研究院集团股份有限公司科技专项（100130320）。

详细信息

通讯作者:
张凯(1984-),男,博士,主要从事新型环保建筑材料研究。miraclezheng@163.com

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出版历程
- 收稿日期: 2019-09-06

PREPARATION OF NANO-SHEET ZSM-5 ZEOLITE AND ITS ADSORPTION PROPERTIES FOR INDOOR ENVIRONMENT VOCs

1. Guangdong Provincial Academy of Building Research Group Co., Ltd, Guangzhou 510640, China;
2. Guangzhou Hongkeyuan Biotechnology Co., Ltd, Guangzhou 510760, China

摘要

摘要: 合成了1种新型分子结构的bola型表面活性剂，并以其为模板，以正硅酸乙酯、偏铝酸钠为硅源和铝源，按n（NaOH）∶n（NaAlO₂）∶n（SiO₂）∶n（SDA）∶n（H₂O）为30∶2.5∶120∶5∶4800进行配比，采用水热法制备出具有纳米片层结构的ZSM-5分子筛（H-ZSM-5）。采用扫描电镜、透射电镜、X射线和N₂吸脱附等技术表征所制备的片层ZSM-5分子筛。对传统ZSM-5、H-ZSM-5进行了甲醛分子静态吸附实验，发现H-ZSM-5分子筛静态吸附量显著高于传统微孔ZSM-5。采用较大分子直径的甲苯蒸汽分子评价吸附性能发现，纳米片层状H-ZSM-5分子筛具备吸附较大分子直径VOCs的能力，可以用于室内较大分子VOCs的净化去除。
- bola型表面活性剂 /
- H-ZSM-5 /
- 甲醛 /
- 甲苯 /
- 吸附
Abstract: In this study, a new type of bola surfactant was synthesized and used as the template to prepare ZSM-5 molecular sieve (H-ZSM-5) with nano lamellar structure. The ethyl orthosilicate and sodium metaaluminate were used as silicon source and aluminum source, respectively. The H-ZSM-5 was prepared by hydrothermal method, and the mole ratio was 30 NaOH∶2.5 NaAlO₂∶120 SiO₂∶5 SDA∶4800 H₂O. The prepared ZSM-5 molecular sieves were characterized by scanning electron microscopy, transmission electron microscopy, X-ray and nitrogen adsorption, thermogravimetric analysis, etc. The static adsorption experiments of formaldehyde on the traditional ZSM-5 and H-ZSM-5 were carried out. It was found that the adsorption capacity of H-ZSM-5 molecular sieve was significantly higher than that of the traditional microporous ZSM-5. The evaluation of adsorption performance by using toluene vapor molecule with larger molecular diameter showed that the nano-sheet H-ZSM-5 zeolite had the ability to adsorb VOCs molecules with larger molecular structure and the applying potential in indoor air purification.
- bola surfactant /
- H-ZSM-5 /
- formaldehyde /
- toluene /
- adsorption

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