Adsorption of organic vapor on trimethylsilylated silicasстатья
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Дата последнего поиска статьи во внешних источниках: 4 февраля 2014 г.
Аннотация:Adsorption of various classes of organic compounds has been studied on silicas chemically modified by silanes that contain a trimethylsilyl group: (CH3)3Sil(TMS) and (CH3)3Si(CH2)3(CH3)2SiCl (C3TMS). The effect caused by the nature of the adsorbate and grafted groups on the thermodynamic parameters of adsorption has been studied. Surface modifying is shown to dramatically decrease the Henry constants of n-alkane adsorption equilibrium relative to the unmodified matrix. The contribution of specific interactions to adsorption, estimated by different methods, in the TMS-silica sample is higher than in the C3TMS-silica sample.