Does hierarchical structure affect the shape selectivity of zeolites? Example of transformation of n-hexane in hydroisomerization

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F18%3A00490606" target="_blank" >RIV/61388955:_____/18:00490606 - isvavai.cz</a>
Alternative codes found
RIV/61388980:_____/18:00490606
Result on the web
<a href="http://dx.doi.org/10.1016/j.jcat.2018.05.010" target="_blank" >http://dx.doi.org/10.1016/j.jcat.2018.05.010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jcat.2018.05.010" target="_blank" >10.1016/j.jcat.2018.05.010</a>

Result language
angličtina
Original language name
Does hierarchical structure affect the shape selectivity of zeolites? Example of transformation of n-hexane in hydroisomerization
Original language description
The large mesoporous surfaces of hierarchical zeolites without confinement of the active sites leads to the question of whether the shape selectivity of these zeolites is essentially altered. The hydroisomerization of n-hexane to mono- and dibranched C6isomers was carried out as a model reaction governed by the shape selectivity to obtain insight into the effects of the secondary mesoporous structure. A series of micro- and micromesoporous ZSM-5, MOR,∗BEA, and Y zeolites with regular microporosity or well-developed mesoporosity were prepared by synthesis and postsynthesis treatment, and their selectivity was investigated. We demonstrate that isomerization is exclusively controlled by concurrent interaction of the reactant with the Brønsted site and the inner walls of the zeolite channels, irrespective of the mesoporosity. The reaction is facilitated only by a combination of dispersive forces in the inert void and acid sites in the confined environment. The shape selectivity of micromesoporous zeolites is thus fully preserved.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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