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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 26, Number 4
JKCSEZ 26(4)
August 20, 1982 

 
Title
Thermodynamic Properties of Kr Gas Adsorbed on Graphite Surface

흑연 표면에 흡착된 Kr 기체의 열역학적 성질
Author
Woon-Sun Ahn, Kyung Hee Ham, Eun Ah Yoo, Kwang Soon Lee

안운선, 함경희, 류은아, 이광순
Keywords
Abstract
흑연 표면에 흡착된 Kr분자를 2D기체로 보고 2D비리알상태방정식의 넷째 비리알 계수를 cluster intergral을 이용해서 계산하였으며, 또한 Henry 상수와 둘째 및 셋째 비리알계수도 계산하였다. 그리고 이 상태방정식으로부터 흡착등온곡선을 구하여 실험결과와 비교하여 본 결과 상당히 만족스런 결과를 얻었다. Kr-고체표면 사이의 상호작용 에너지는 Lennard-Jones(12,6)퍼텐셜의 pairwise additivity를 가정하여 구하였으며, 여기에 사용한 파라미터는 εgs/k = 71.1 K, εgg/k = 170 K, σgs = 354 pm 및 σgg = 368 pm이다.

Assuming krypton molecules adsorbed on the graphite surface as a two-dimensional (2D) gas, 4th virial coefficient of the virial equation is calculated by the use of cluster integrals. The Henry's law constant, and 2nd and 3rd virial coefficients are also calculated. Adsorption isotherms calculated from this virial equation agree very satisfactorily with experimental results. The interaction energy of Kr-graphite surface is calculated assuming the pairwise additivity of Lennard-Jones(12,6) potential, and parametars therein are taken as; εgs/k = 71.1 K, εgg/k = 170 K, σgs = 354 pm, and σgg = 368 pm.

Page
211 - 217
Full Text
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