Abstract
Bis(trimethoxysilyl)norbornane (BTMSN) bearing a highly rigid norbornane bridge was employed as a new silica membrane precursor. The membrane prepared by subjecting BTMSN to the sol–gel process was examined for gas and water separation, and the results were compared with those of ethylene- and ethenylene-bridged silica membranes reported previously. Interestingly, the gas permeability of the BTMSN silica membrane was higher than that of the ethylene- and ethenylene-bridged silica membranes, whereas the water permeability was rather suppressed. The moderately high H2/SF6 permeance ratio of 1,160 and the NaCl rejection of 95 % (2,000 ppm aqueous NaCl) obtained for the BTMSN silica membrane clearly indicate its potential application to gas and water separation.
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This research was supported by Core Research for Evolutionary Science and Technology (CREST), Japan Science and Technology Agency (JST).
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Ohshita, J., Muragishi, H., Yamamoto, K. et al. Preparation and separation properties of porous norbornane-bridged silica membrane. J Sol-Gel Sci Technol 73, 365–370 (2015). https://doi.org/10.1007/s10971-014-3542-y
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DOI: https://doi.org/10.1007/s10971-014-3542-y