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@article{2292765,
author = {Hradský, Dalibor and Macháč, Petr and Skoda, David and Leonová, Lucie and Sazama, Petr and Pastvova, Jana and Kaucky, Dalibor and Všianský, Dalibor and Moravec, Zdeněk and Stýskalík, Aleš},
article_number = {February},
doi = {http://dx.doi.org/10.1016/j.apcata.2023.119037},
keywords = {Zirconosilicate; Micro-mesoporous; Non-hydrolytic sol -gel; Ethanol to butadiene transformation; Aldol condensation; MPV reaction},
language = {eng},
issn = {0926-860X},
journal = {Applied Catalysis A: General},
title = {Catalytic performance of micro-mesoporous zirconosilicates prepared by non-hydrolytic sol-gel in ethanol-acetaldehyde conversion to butadiene and related reactions},
url = {https://doi.org/10.1016/j.apcata.2023.119037},
volume = {652},
year = {2023}
}
TY - JOUR
ID - 2292765
AU - Hradský, Dalibor - Macháč, Petr - Skoda, David - Leonová, Lucie - Sazama, Petr - Pastvova, Jana - Kaucky, Dalibor - Všianský, Dalibor - Moravec, Zdeněk - Stýskalík, Aleš
PY - 2023
TI - Catalytic performance of micro-mesoporous zirconosilicates prepared by non-hydrolytic sol-gel in ethanol-acetaldehyde conversion to butadiene and related reactions
JF - Applied Catalysis A: General
VL - 652
IS - February
SP - 1-13
EP - 1-13
PB - Elsevier B.V
SN - 0926860X
KW - Zirconosilicate
KW - Micro-mesoporous
KW - Non-hydrolytic sol -gel
KW - Ethanol to butadiene transformation
KW - Aldol condensation
KW - MPV reaction
UR - https://doi.org/10.1016/j.apcata.2023.119037
N2 - The open porosity and number of Lewis acid sites in metal silicates (M = Zr, Ta) have been reported as key factors enabling reaching high butadiene (BD) productivity from ethanol. However, some microporous zeolites recently displayed very high BD yields. To gain a deeper insight, we have applied non-hydrolytic sol-gel (NHSG) in the preparation of micro-mesoporous zirconosilicates. The porosity, structure, and acidity of these materials have been described and compared to a benchmark sample prepared by dry impregnation. The detailed characterization proved that NHSG preparation provided highly homogeneous Zr dispersion in silica leading to almost doubled Lewis acid site numbers and higher activity in ethanol-acetaldehyde conversion to BD, MeerweinPonndorf-Verley (MPV) reaction, and aldol condensation, in comparison to the catalyst prepared by dry impregnation. The selectivity and stability were similar for catalysts prepared by NHSG and dry impregnation.
ER -
HRADSKÝ, Dalibor, Petr MACHÁČ, David SKODA, Lucie LEONOVÁ, Petr SAZAMA, Jana PASTVOVA, Dalibor KAUCKY, Dalibor VŠIANSKÝ, Zdeněk MORAVEC a Aleš STÝSKALÍK. Catalytic performance of micro-mesoporous zirconosilicates prepared by non-hydrolytic sol-gel in ethanol-acetaldehyde conversion to butadiene and related reactions. \textit{Applied Catalysis A: General}. Elsevier B.V, 2023, roč.~652, February, s.~1-13. ISSN~0926-860X. Dostupné z: https://dx.doi.org/10.1016/j.apcata.2023.119037.
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