Abstract
In this paper, the organophilic property of MCM-41 was studied and compared with hydrophobic silicalite-1 using adsorption and temperature-programmed desorption (TPD) methods. The surface heterogeneity of MCM-41 was evaluated in terms of activation energy for desorption ( E d) and isosteric heat of adsorption ( q st) . Results show that MCM-41 has a higher affinity to polar organic compounds than to non-polar organics while silicalite-1 has a higher affinity to non-polar organic compounds than to polar organics. This organophilic behaviour of MCM-41 is attributed to its surface heterogeneity.
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