Design of Effective Catalysts Based on ZnLaZrSi Oxide Systems for Obtaining 1,3-Butadiene from Aqueous Ethanol
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10423299" target="_blank" >RIV/00216208:11320/20:10423299 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Dk.~k1v-tx" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Dk.~k1v-tx</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acssuschemeng.0c05925" target="_blank" >10.1021/acssuschemeng.0c05925</a>
Alternative languages
Result language
angličtina
Original language name
Design of Effective Catalysts Based on ZnLaZrSi Oxide Systems for Obtaining 1,3-Butadiene from Aqueous Ethanol
Original language description
ZnLaZrSi oxide systems prepared with a silica component of the different nature have been studied in 1,3-butadiene production from aqueous ethanol. The following silica materials were used: KSKG, A-175, A-380, SBA-15, MCM-41, MCM-48, MCF, and dealuminated BEA zeolites. The characteristics of the porous structure of the silica support, such as porosity, pore size distribution, and specific and external surface areas, were found not to be critical parameters for achieving a high 1,3-butadiene yield during the EtOH-H2O mixture conversion in the presence of ZnLaZrSi oxide catalysts. On the contrary, the quantity and strength of Lewis acid sites, which in turn differ depending on the choice of silica material, have a significant impact on 1,3-butadiene selectivity and yield. The highest values of the selectivity of 1,3-butadiene formation (up to 68%) and yield as well as stability toward deactivation in the presence of H2O were achieved over ZnLaZr-KSKG, ZnLaZr-SBA-15, and ZnLa-Zr(1)SiBEA (with mononuclear isolated tetrahedral Zr(IV) species). The productivity of ZnLa-Zr(1)SiBEA catalyst accounts for 0.324 g(1,3-BD)center dot g(cat)(-1)center dot h(-1) (T = 648 K, WHSV = 2.88 h(-1), 80 vol % EtOH in water as an EtOH source). The main reason for the decrease in 1,3-butadiene yield in the presence of H2O in the reaction mixture was shown to be a deactivation of acetaldehyde condensation sites on the catalyst surface, while the rate of acetaldehyde formation decreases slightly. According to H-1-C-1(3) CP/MAS NMR spectroscopic results, the use of aqueous ethanol as the feed for the ethanol-to-butadiene process is very advantageous to prevent the carburization of the catalysts.
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
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/LM2018116" target="_blank" >LM2018116: Surface Physics Laboratory - Materials Science Beamline</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Sustainable Chemistry & Engineering
ISSN
2168-0485
e-ISSN
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Volume of the periodical
8
Issue of the periodical within the volume
44
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
16600-16611
UT code for WoS article
000592226900024
EID of the result in the Scopus database
2-s2.0-85095880415