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Citation: Dai Min-Guang, Miao Rui-Ping. Binary Gas Adsorption on Silica Gel with Different Surface Coverage[J]. Acta Physico-Chimica Sinica, ;1995, 11(11): 968-972. doi: 10.3866/PKU.WHXB19951103 shu

Binary Gas Adsorption on Silica Gel with Different Surface Coverage

1.
Department of Chemistry,Fuzhou University,Fuzhou 350002

Received Date: 7 November 1994
Available Online: 15 November 1995

The composition adsorption isotherms (ya~xg curve) for acetone-n-hexane, benzene-n-hexane, toluene-n-hexane and n-pentance-n-hexane vapor mixtures on silica gel with different surface coverage (θ) at 25℃ were measured. The experimental results indicated that the ya ~ xg curves approached gradually down to corresponding binary liquid-vapor equllibrium curves with increasing of surface coverage. Therefore, the binary adsorbed phases are similarly with the binary liquid phase. Except for acetone-n-hexane system, which had a minimum boiling point, the composition adsorption isotherms of the other three binary systems could be simulated by equation of relative volatility.
- Binary gas adsorption,
- Silica gel,
- Aceton-n-hexane,
- Toluene-n-hexane,
- Benzene-n-hexane,
- n-Pentane-n-hexane,
- Surface coverage
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