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M. Oleksy M. Heneczkowski

Modified bentonites as adsorbents of hydrocarbons' vapors

Polimery 2008, No 3, 219


DOI: dx.doi.org/10.14314/polimery.2008.219

Summary

The processes of organophilization of three types of commercial bentonites, markes with symbols SN, BS and BW, with quaternary ammonium salts differing in chemical structure (QAS, Table 1 and 2) were carried out. The effects of type of substituent at nitrogen atom in QAS on adsorbing capacity of modified bentonites towards 5 various hydrocarbons: gasoline, diesel fuel, benzene, hexane and toluene has been characterized. Unmodified zeolite was used as a reference sample (Table 3, Fig. 1 and 2). The best results (maximal values of weight rise, in %) were obtained for SN bentonite modified with QAS with one benzyl, one decyl and two methyl substituents.


Key words: bentonites, quaternary ammonium salts, modification, adsorption, aliphatic hydrocarbons, aromatic hydrocarbons


e-mail: molek@prz.rzeszow.pl


M. Oleksy M. Heneczkowski

Modified bentonites as adsorbents of hydrocarbons' vapors