Effect of the Thermal Etching Temperature and SiO2/Al2O3 Ratio of Flexible Zeolite Fibers on the Adsorption/desorption Characteristics of Toluene

Sang Hyun Ji; Ji Sun Yun

doi:10.3740/MRSK.2019.29.3.143

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Effect of the Thermal Etching Temperature and SiO₂/Al₂O₃ Ratio of Flexible Zeolite Fibers on the Adsorption/desorption Characteristics of Toluene

March 2019. pp. 143-149

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Abstract

To develop flexible adsorbents for compact volatile organic compound (VOC) air purifiers, flexible as-spun zeolite fibers are prepared by an electrospinning method, and then zeolite particles are exposed as active sites for VOC (toluene) adsorption on the surface of the fibers by a thermal surface partial etching process. The breakthrough curves for the adsorption and temperature programmed desorption (TPD) curves of toluene over the flexible zeolite fibers is investigated as a function of the thermal etching temperature by gas chromatography (GC), and the adsorption/desorption characteristics improves with an increase in the thermal surface etching temperature. The effect of acidity on the flexible zeolite fibers for the removal of toluene is investigated as a function of the SiO₂/Al₂O₃ ratios of zeolites. The acidity of the flexible zeolite fibers with different SiO₂/Al₂O₃ ratios is measured by ammonia-temperature-programmed desorption (NH₃-TPD), and the adsorption/desorption characteristics are investigated by GC. The results of the toluene adsorption/desorption experiments confirm that a higher SiO₂/Al₂O₃ ratio of the flexible zeolite fibers creates a better toluene adsorption/desorption performance.

Keywords

adsorption

electrospinning

solution process

VOCs

zeolite fibers

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 29
No :3
Pages :143-149
Received Date : 2019-01-21
Revised Date : 2019-02-12
Accepted Date : 2019-02-14
DOI :https://doi.org/10.3740/MRSK.2019.29.3.143

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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