1. Core–shell zeolite composite with enhanced selectivity for the separation of branched paraffin isomers
- Author
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Pirngruber, Gerhard D., Laroche, Catherine, Maricar-Pichon, Michelle, Rouleau, Loïc, Bouizi, Younes, and Valtchev, Valentin
- Subjects
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ZEOLITES , *COMPOSITE materials , *POLYCRYSTALLINE silicon , *PARAFFIN wax , *ISOMERS , *SEPARATION (Technology) - Abstract
Abstract: 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. [Copyright &y& Elsevier]
- Published
- 2013
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