Influence of Substrate Concentration on Kinetic Parameters of Ethanol Dehydration in MFI and CHA Zeolites and Relation of These Kinetic Parameters to Acid-Base Properties
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F22%3A39919513" target="_blank" >RIV/00216275:25310/22:39919513 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/2073-4344/12/1/51" target="_blank" >https://www.mdpi.com/2073-4344/12/1/51</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/catal12010051" target="_blank" >10.3390/catal12010051</a>
Alternative languages
Result language
angličtina
Original language name
Influence of Substrate Concentration on Kinetic Parameters of Ethanol Dehydration in MFI and CHA Zeolites and Relation of These Kinetic Parameters to Acid-Base Properties
Original language description
The catalytic activity of zeolites is often related to their acid-base properties. In this work, the relationship between the value of apparent activation energy of ethanol dehydration, measured in a fixed bed reactor and by means of a temperature-programmed surface reaction (TPSR) depending on the amount of ethanol in the zeolite lattice and the value of activation energy of H/D exchange as a measure of acid-base properties of MFI and CHA zeolites, was studied. Tests in a fixed bed reactor were unable to provide reliable reaction kinetics data due to internal diffusion limitations and rapid catalyst deactivation. Only the TPSR method was able to provide activation energy values comparable to the activation energy values obtained from the H/D exchange rate measurements. In addition, for CHA zeolite, it has been shown that the values of ethanol dehydration activation energies depend on the amount of ethanol in the CHA framework, and this effect can be attributed to the substrate clustering effects supporting the deprotonation of zeolite Bronsted centers.
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
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Catalysts
ISSN
2073-4344
e-ISSN
2073-4344
Volume of the periodical
12
Issue of the periodical within the volume
1
Country of publishing house
CH - SWITZERLAND
Number of pages
15
Pages from-to
"51-1"-"51-15"
UT code for WoS article
000747677000001
EID of the result in the Scopus database
2-s2.0-85122083567