Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9781669 | Journal of Physics and Chemistry of Solids | 2005 | 6 Pages |
Abstract
Adsorption behavior of gaseous molecules such as water vapor, nitrogen, and hydrogen within the interlayer of the hybrid compound composed of cationic polufluorinated surfactant, heptafluorobutanoylaminoethylhexadecyldimethylammonium bromide (C3F-S), and cation exchangeable clay, saponite, was studied by means of quartz crystal microbalance (QCM). The amount of adsorption of the gaseous molecules proportionally increased with the increase of the intercalated amount of C3F-S within the inorganic/organic hybrid compound. When the hybrid compound was dried before the gaseous adsorption, the dynamic response of the adsorption was very fast within 1Â s, while it required a long time for ca. 10Â h to plateau to a saturation level after an initial rapid increase followed by a slow decay of the QCM signal for the wet sample containing water (0.3Â mmol/g-saponite). The dried hybrid compound, having C3F-S in the amount 4.3Â equiv. against cation exchange capacity, adsorbed nitrogen (0.03Â mmol/g-saponite), hydrogen (0.1Â mmol/g-saponite), oxygen (0.03Â mmol/g-saponite), ethylene (0.19Â mmol/g-saponite) at 298Â K, 101Â kPa, respectively. The wet sample exhibited the gaseous adsorption with the larger amount: nitrogen (0.068Â mmol/g-saponite), hydrogen (0.4Â mmol/g-saponite), oxygen (0.067Â mmol/g-saponite), and ethylene (0.24Â mmol/g-saponite), respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Makoto Sumitani, Yoshihiko Tanamura, Takuyuki Hiratani, Tadatoshi Ohmachi, Haruo Inoue,