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3568120 
Journal Article 
Adsorption isotherms of polar and nonpolar organic compounds on MCM-48 at (303.15, 313.15, and 323.15) K 
Lee, JW; Shim, WG; Yang, MS; Moon, H 
2004 
Yes 
Journal of Chemical and Engineering Data
ISSN: 0021-9568
EISSN: 1520-5134 
AMER CHEMICAL SOC 
WASHINGTON 
49 
3 
502-509 
English 
WOS:000221486100023 
Adsorption equilibria of four nonpolar molecules (benzene, toluene, hexane, and cyclohexane) and two polar molecules (methanol and acetone) on mesoporous silicate MCM-48 were measured at (303.15, 313.15, and 323.15) K using a gravimetric technique. It was found that MCM-48 has a higher affinity to polar organic compounds than to nonpolar organics. A hybrid isotherm model composed of Langmuir isotherm and Sips equations was applied to fit the adsorption equilibrium data of nonpolar organics including surface adsorption and capillary condensation, while inhomogeneous Dubinin-Astakov (DA) isotherm was used to correlate those of polar organics. The proposed isotherms correlated the measured adsorption data well over the whole range at these experimental conditions.