Tailoring the Structure and Acid Site Accessibility of Mordenite Zeolite for Hydroisomerisation of n-hexane
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39912797" target="_blank" >RIV/00216275:25310/18:39912797 - isvavai.cz</a>
Alternative codes found
RIV/61388955:_____/18:00490608
Result on the web
<a href="http://dx.doi.org/10.1016/j.apcata.2018.05.035" target="_blank" >http://dx.doi.org/10.1016/j.apcata.2018.05.035</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apcata.2018.05.035" target="_blank" >10.1016/j.apcata.2018.05.035</a>
Alternative languages
Result language
angličtina
Original language name
Tailoring the Structure and Acid Site Accessibility of Mordenite Zeolite for Hydroisomerisation of n-hexane
Original language description
Mordenite zeolites with diffusion-restricted access to the acid sites located in mono-dimensional 12-ring channels and 8-ring side pockets have found broad applications as catalysts for hydroisomerisation of linear C-5 and C-6 alkanes and other highly relevant acid-catalysed processes. The accessibility of the porous structure of mordenite (MOR) zeolite is traditionally enhanced by dealumination, but this is invariably connected with a dramatic reduction in the aluminium content and corresponding concentration of the acid sites in the zeolites. Here we describe the preparation of MOR zeolite with high micropore volume, three-dimensional supermicropores (d similar to 7.5 angstrom) and good acid site accessibility by concurrent extraction of Si and Al using postsynthesis fluorination alkaline-acid treatment. The concurrent extraction of Si and Al enables formation of more developed super-microporous structure and preservation of the molecular Si/Al. The procedure yields MOR with a crystalline structure in which the Si/Al ratio and the micropore volume can be tailored (Si/Al from similar to 6, V-MI up to 0.25 cm(3).g(-1)) by the chemical conditions of the treatment. The Al-rich 3D supermicroporous structure with accessible Bronsted and Lewis active sites provides strongly enhanced activity, selectivity and long-term catalytic stability in the transformation of n-hexane into the corresponding branched isomers.
Czech name
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Czech description
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Classification
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
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied catalysis A: General
ISSN
0926-860X
e-ISSN
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Volume of the periodical
562
Issue of the periodical within the volume
July
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
14
Pages from-to
159-172
UT code for WoS article
000443630600018
EID of the result in the Scopus database
2-s2.0-85048269246