Study on synthesis and adsorption performance of hydrophobic ZSM-5 zeolites for removal of toluene in high-humidity exhaust gas

GAO Jun an; WANG Wei; ZHANG Jie; LEI Zhigang; SHI Dongjun; QU Lingduo

doi:10.11949/0438-1157.20191253

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Study on synthesis and adsorption performance of hydrophobic ZSM-5 zeolites for removal of toluene in high-humidity exhaust gas

Separation engineering | 更新时间：2026-07-24

- Study on synthesis and adsorption performance of hydrophobic ZSM-5 zeolites for removal of toluene in high-humidity exhaust gas
- CIESC Journal Vol. 71, Issue 1, Pages: 337-343(2020)
- 作者机构：
  
  1. 北京化工大学化工资源有效利用国家重点实验室，北京 100029
  2. 北京泷涛环境科技有限公司，北京 100071
  3. 淄博齐创化工科技开发有限公司，山东淄博 255000
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20191253
  CLC： X 511
- Received：23 October 2019，
  
  Revised：2019-10-30，
  
  Online First：12 August 2020，
  
  Published：05 January 2020
- 稿件说明：
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高君安, 王伟, 张傑, 雷志刚, 史东军, 曲令多. 用于高湿度废气中甲苯吸附净化的疏水型ZSM-5分子筛的合成及其吸附性能研究[J]. 化工学报, 2020, 71(1): 337-343

GAO Jun an, WANG Wei, ZHANG Jie, LEI Zhigang, SHI Dongjun, QU Lingduo. Study on synthesis and adsorption performance of hydrophobic ZSM-5 zeolites for removal of toluene in high-humidity exhaust gas[J]. CIESC Journal, 2020, 71(1): 337-343
高君安, 王伟, 张傑, 雷志刚, 史东军, 曲令多. 用于高湿度废气中甲苯吸附净化的疏水型ZSM-5分子筛的合成及其吸附性能研究[J]. 化工学报, 2020, 71(1): 337-343 DOI： 10.11949/0438-1157.20191253.

GAO Jun an, WANG Wei, ZHANG Jie, LEI Zhigang, SHI Dongjun, QU Lingduo. Study on synthesis and adsorption performance of hydrophobic ZSM-5 zeolites for removal of toluene in high-humidity exhaust gas[J]. CIESC Journal, 2020, 71(1): 337-343 DOI： 10.11949/0438-1157.20191253.

摘要

采用水热原位法合成了不同硅铝比的ZSM-5分子筛，研究了硅铝比对ZSM-5分子筛结构和疏水性的影响。以典型的挥发性有机物甲苯为对象，在动态吸附实验装置上评价了ZSM-5分子筛吸附有机物的性能，并拟合了甲苯在疏水ZSM-5上的吸附等温线方程。结果表明，高硅铝比ZSM-5具有良好的疏水性，其静态水吸附容量为0.014 g·g

-1

，在高湿度条件下，甲苯浓度为1800 mg·m

-3

，GHSV为25000 ml·h

-1

·g

-1

，温度为35℃，甲苯穿透吸附容量为0.041 g·g

-1

，甲苯饱和吸附容量为0.075 g·g

-1

。吸附等温线的拟合显示，甲苯在疏水ZSM-5分子筛上的吸附符合Langmuir-Freundlich复合模型。

Abstract

ZSM-5 zeolites with different Si/Al ratios were synthesized by hydrothermal

in situ

method. The effect of Si/Al ratio on the structure and hydrophobicity of ZSM-5 was studied. The adsorption performance of ZSM-5 zeolites for toluene was investigated on a dynamic adsorption experimental device

and the adsorption isotherm equation of toluene on hydrophobic ZSM-5 was studied. The results show that the high-silicon ZSM-5 has good hydrophobicity

and its static water adsorption capacity is 0.014 g·g

-1

. Under high humidity conditions

the toluene concentration of 1800 mg·m

-3

the GHSV of 25000 ml·h

-1

·g

-1

and the temperature of 35℃

the breakthrough adsorption capacity of the synthesized ZSM-5 for toluene

is 0.041 g·g

-1

and the toluene saturated adsorption capacity is 0.075 g·g

-1

. The fitting of the adsorption isotherm showed that the adsorption of toluene on the hydrophobic ZSM-5 zeolites was in accordance with the Langmuir-Freundlich model.

关键词

Keywords

references

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