Abstract
MFI-type zeolite membranes containing aluminum have been prepared on the surfaces of aluminum coated porous alumina asymmetric substrates. The metallic layer functioned as a source of aluminum during hydrothermal synthesis of a zeolite polycrystalline layer on the substrates. XRD, EDS and SEM showed that the metallic layer resolved and a continuous zeolitic layer was formed.
The zeolite membranes were modified with ion-exchange procedures to obtained a high catalytically activity. The gas separation properties were investigated by gas permeation measurements. The catalytic properties were characterized by the dehydration of ethanol. The successful incorporation of a zeolite membrane in a commercially methane gas sensor showed an improvement of the methane selectivity in the presence of alcohols.
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Nipprasch, D., Kaufmann, T., Kloeher, S., Risch, K. (2004). Microporous Zeolite Membranes — a Useful Tool for Gas Sensing Systems. In: Buzaneva, E., Scharff, P. (eds) Frontiers of Multifunctional Integrated Nanosystems. NATO Science Series II: Mathematics, Physics and Chemistry, vol 152. Springer, Dordrecht. https://doi.org/10.1007/1-4020-2173-9_35
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DOI: https://doi.org/10.1007/1-4020-2173-9_35
Publisher Name: Springer, Dordrecht
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