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A Study on Dealumination of NaY Zeolite and its VOCs Adsorption PropertiesDealumination에 의한 NaY zeolite의 개질과 VOCs 흡착특성에 관한 연구
- Other Titles
- Dealumination에 의한 NaY zeolite의 개질과 VOCs 흡착특성에 관한 연구
- Authors
- Kang, Shinchoon; Lee, Hwayeol; Park, Yeungho
- Issue Date
- Jun-2015
- Publisher
- KOREAN INSTITUTE CHEMICAL ENGINEERS
- Keywords
- Dealumination; NaY Zeolite; VOCs; Adsorption; Hydrophobicity
- Citation
- KOREAN CHEMICAL ENGINEERING RESEARCH, v.53, no.3, pp.339 - 349
- Indexed
- SCOPUS
KCI
- Journal Title
- KOREAN CHEMICAL ENGINEERING RESEARCH
- Volume
- 53
- Number
- 3
- Start Page
- 339
- End Page
- 349
- ISSN
- 0304-128X
- Abstract
- In this work, DAY (Dealuminated Y-type) zeolites were prepared to be used as easily regenerable and thermally stable adsorbent substituting activated carbon. NaY zeolites were transformed into DAY zeolites through ion exchange, calcination, steaming, and acid leaching. Calcination temperature and time, and steaming time were changed to increase the Si/Al ratio and maintain crystallinity. Adsorption of VOCs were done for prepared DAY, commercial NaY and Hisiv 1000 in air with relative humidity of 50%. The DAY zeolite prepared by calcination at 520 degrees C for 4 hrs and steaming for 7 hrs had a same structure and a Si/Al ratio of 80.4. Its adsorption capacity for water vapor was 10% of NaY, indicating its hydrophobicity. Its adsorption capacity for MEK was 0.8 times of Hisiv 1000, that for toluene 1.6 times, and that for EA 1.3 times.
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