Selective Introduction of Acid Sites in Different Confined Positions in ZSM-5 and Its Catalytic Implications
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F18%3A00506544" target="_blank" >RIV/61388955:_____/18:00506544 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0297775" target="_blank" >http://hdl.handle.net/11104/0297775</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acscatal.8b02112" target="_blank" >10.1021/acscatal.8b02112</a>
Alternative languages
Result language
angličtina
Original language name
Selective Introduction of Acid Sites in Different Confined Positions in ZSM-5 and Its Catalytic Implications
Original language description
Controlling the location of acid sites in zeolites can have a great effect on catalysis. In this work we face the objective of directing the location of AI into the 10R channels of ZSM-5 by taking advantage of the structural preference of B to occupy certain positions at the channel intersections, as suggested by theoretical calculations. The synthesis of B-Al-ZSM-5 zeolites with variable Si/Al and Si/B ratios, followed by B removal in a postsynthesis treatment, produces ZSM-5 samples enriched in Al occupying positions at 10R channels. The location of the acid sites is determined on the basis of the product distribution of 1-hexene cracking as a test reaction. The higher selectivity to propene and lower C-4(=)/C-3(=) ratio in the samples synthesized with B and subsequently deboronated can be related to a larger concentration of acid sites in 10R channels, where monomolecular cracking occurs. Finally, several ZSM-5 samples have been tested in the methanol to propene reaction, and those synthesized through the Bassisted method show longer catalytic lifetime, higher propene yield, and lower yield of alkanes and aromatics.
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
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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
ACS Catalysis
ISSN
2155-5435
e-ISSN
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Volume of the periodical
8
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
7688-7697
UT code for WoS article
000441112400091
EID of the result in the Scopus database
2-s2.0-85049915298