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Journal articles
Hollow Y zeolite single crystals: synthesis, characterization and activity in the hydroisomerization of n-hexadecane
Abstract : Hollow Y zeolite single crystals have been obtained from a conventional NaY zeolite following a three-step process involving a severe dealumination of the zeolite with silicon tetrachloride (step #1), followed by an acid washing under mild conditions (step #2) and finally a selective dissolution of the crystals core in the presence of protective Al species (step #3). Crystals are characterized by the presence of a regular internal cavity with 0.1–0.2 nm thick microporous walls. They contain a relatively low framework Al content but significant amounts of extraframework Al oxide species mainly located on the external surface of the crystals. Hollow crystals have been mixed with a Pt-supported alumina binder and used as catalysts in the hydroisomerization of n-hexadecane. Compared to the corresponding bulk crystals obtained after step #2, their higher activity has been attributed to a better efficiency, directly resulting from the presence of the cavity.
Cited literature [53 references]
https://hal-ifp.archives-ouvertes.fr/hal-02101586
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Submitted on : Tuesday, April 16, 2019 - 9:12:15 PM
Last modification on : Friday, June 18, 2021 - 11:50:15 AM
Contributor : Edp Sciences Connect in order to contact the contributor
Submitted on : Tuesday, April 16, 2019 - 9:12:15 PM
Last modification on : Friday, June 18, 2021 - 11:50:15 AM
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ogst180213.pdf
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