کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
73716 | 49068 | 2013 | 6 صفحه PDF | دانلود رایگان |
A zeolite beta–silicalite-1 composite was prepared by growing polycrystalline silicalite-1 shells on single micron-sized zeolite beta crystals. The obtained core–shell material was employed for the separation of hexane isomers. Gravimetric uptake measurements revealed that the silicalite-1 shell acted as a membrane that controlled the transport to zeolite beta core. The positive impact of the silicalite-1 membrane on the separation of mono- and di-branched hexane isomers was confirmed by breakthrough experiments. The core–shell composite material allowed more selective separation of mono- and di-branched isomers than either of its components alone and had a significantly higher adsorption capacity than silicalite-1.
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► The separation of mono- and di-branched hexane isomers was tested on the core–shell composite.
► The silicalite-1 shell plays the role of a membrane controlling the access to the beta core.
► The mono/di selectivity of the composite is higher than that of the silicalite-1 reference sample.
Journal: Microporous and Mesoporous Materials - Volume 169, 15 March 2013, Pages 212–217