| 纳米片层状ZSM-5分子筛制备及其对室内环境VOCs吸附性能 |
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| 引用本文： | 张凯,杨仕超,罗敏,吴延恒,于素英.纳米片层状ZSM-5分子筛制备及其对室内环境VOCs吸附性能[J].环境工程,2020,38(1):60-64,74. |
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| 作者姓名： | 张凯 杨仕超 罗敏 吴延恒 于素英 |
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| 作者单位： | 1. 广东省建筑科学研究院集团股份有限公司, 广州 510640; |
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| 基金项目： | 广东省建筑科学研究院集团股份有限公司科技专项;国家自然科学基金 |
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| 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。
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| 关 键 词： | bola型表面活性剂 H-ZSM-5 甲醛 甲苯 吸附 |
| 收稿时间： | 2019-09-06 |
PREPARATION OF NANO-SHEET ZSM-5 ZEOLITE AND ITS ADSORPTION PROPERTIES FOR INDOOR ENVIRONMENT VOCs |
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| ZHANG Kai,YANG Shi-chao,LUO Min,WU Yan-heng,YU Su-ying.PREPARATION OF NANO-SHEET ZSM-5 ZEOLITE AND ITS ADSORPTION PROPERTIES FOR INDOOR ENVIRONMENT VOCs[J].Environmental Engineering,2020,38(1):60-64,74. |
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| Authors: | ZHANG Kai YANG Shi-chao LUO Min WU Yan-heng YU Su-ying |
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| Affiliation: | 1. Guangdong Provincial Academy of Building Research Group Co., Ltd, Guangzhou 510640, China;2. Guangzhou Hongkeyuan Biotechnology Co., Ltd, Guangzhou 510760, China |
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| 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. |
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