제올라이트 흡착 실험 보고서 (adsorption isotherms)
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- 2021.07.23
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소개글
제올라이트 흡착도 isotherm 곡선을 실험결과로 그리는 실험결과 보고서입니다
목차
1. Result
2. Discussions
1) Draw the adsorption-desorption isotherms for n-hexane and 2-methylpentane.
2) Comparing the n-hexane and 2-methylpentane isotherms. Correlate the pore structure of 5A (CaA) zeolite and the isotherms.
3) Although the kinetic diameter of 2-methylpentane is larger than the pore aperture size of 5A, 5A showed some adsorption amount even for 2-methylpentane. Explain it.
3. Analysis
1) Error Analysis
2) Use of He gas for determining the cell volume
3) Difference between adsorption/desorption isotherm – Hysteresis loops
4) Adsorption dependence on pressure
4. Reference
본문내용
Both isotherms shows increase as the equilibrium pressure increase, but the adsorption of n-hexane is much higher than the other. The pore aperture size of CaA zeolite is 4.5A. n-hexane and 2-methypentane have the same molar mass, so van der Waals force between zeolite and each molecule specie are similar. However, kinetic diameter of n-Hexane is 4.3A, which is smaller than CaA zeolite pore size. So n-hexane can get into the zeolite pore easily, and it shows high adsorbance.
참고 자료
제올라이트 첫걸음, 서곤, 한국제올라이트학회 (2005)
The KE Research Group, Adsorption and Desorption Isotherms (2016)
KAIST CBE, Chemical & Biomolecular Engineering Laboratory, KAIST
Zeolite molecular sieves: structure, chemistry, and use, Donald W. Breck (1974)
Gregg, S. J., Sing, Kenneth S. W., Adsorption, Surface Area, and Porosity 2nd edition, London, Academic Press