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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 and 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, vol.~652, February, p.~1-13. ISSN~0926-860X. Available from: https://dx.doi.org/10.1016/j.apcata.2023.119037.
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