Publication: Adsorption characteristics of organosilica based mesoporous materials
Date
2004
Authors
Matsumoto A.
Misran H.
Tsutsumi K.
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Abstract
Hybrid organosilica mesoporous materials with pores of ordered three-dimensional hexagonal structure were prepared by the hydrolysis and co-condensation of 1,2-bis(triethoxysilyl)ethane with various concentrations of a surfactant as structure directing agents. The materials had high pore volume of 1-1.5 mL/g and high surface area from 1057 to 1445 m2/g. Adsorption measurement and adsorption calorimetry revealed that the prepared materials exhibited high hydrophobicity and high affinity toward nonpolar organic vapor such as n-hexane. The dynamic adsorption properties of the materials for n-hexane in the presence of water vapor showed that these hybrid organosilica materials preferentially adsorbed n-hexane vapor and were stable in the presence of water compared to the siliceous MCM48.
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Keywords
Adsorption , Calorimetry , Catalysts , Condensation , Hydrolysis , Metalorganics , Silica , Water Repellence , Adsorption , Calorimetry , Catalysts , Condensation , Hydrolysis , Hydrophobicity , Mesoporous materials , Silica , Co-condensation , Dynamic adsorption , Hexagonal structures , Reaction catalysts , Organometallics