descriptionPublicationkeyboard_double_arrow_right Article , Conference object 01 Jan 2015 English Publisher:Elsevier BVJournal:Procedia Chemistry, volume 15, pages 72-78 (issn: 1876-6196,

Authors: Petranovskii, Vitalii; Pestryakov, Aleksey Nikolaevich; Hernandez, Miguel Angel; Rivas, Fernando Chavez; Claverie, Angel; Fuentes, Sergio;

doi: 10.1016/j.proche.2015.10.011

Hydrophilicity of Mordenites with Different SiO2/Al2O3 Molar Ratio

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Abstract

AbstractHydrophicility of H-mordenites with SiO2/Al2O3 molar ratio (MR) varying in the range from 10 up to 206 was investigated by IR spectroscopy, TPD of ammonia and thermogravimetry methods. It was found that dealuminated mordenite retains affinity for water in the entire MR range, in contrast to published results for synthetic pentasil zeolites. In H-mordenites extra-framework aluminum exists in the form of dimers of aluminum hydroxide, those presumably are stabilized in the channels of mordenite. An inversely proportional correlation between the water content in pores and the concentration of channel Lewis sites was observed.

Related Organizations

National Autonomous University of Mexico
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Keywords

гидрофильность, Chemistry(all), термогравиметрия, ИК-спектроскопия, thermogravimetry, мордениты, mordenite, TPD of ammonia, IR spectroscopy, SiO2/Al2O3 molar ratio, Chemical Engineering(all), молярное соотношение, hydrophilicity

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