“Activated Borane”: A Porous Borane Cluster Polymer as an Efficient Lewis Acid-Based Catalyst

0577285 - ÚFCH JH 2024 RIV US eng J - Journal Article
Lamač, Martin - Urbán, Béla - Horáček, Michal - Bůžek, Daniel - Leonová, L. - Stýskalík, A. - Vykydalová, Anna - Škoch, Karel - Kloda, Matouš - Mahun, Andrii - Kobera, Libor - Lang, Kamil - Londesborough, Michael Geoffrey Stephen - Demel, Jan
“Activated Borane”: A Porous Borane Cluster Polymer as an Efficient Lewis Acid-Based Catalyst.
ACS Catalysis. Roč. 13, č. 22 (2023), s. 14614-14626. ISSN 2155-5435. E-ISSN 2155-5435
R&D Projects: GA ČR(CZ) GA23-05818S; GA MŠMT(CZ) LM2023066; GA MŠMT(CZ) EF18_046/0015586; GA ČR(CZ) GA20-01233S
Grant - others:ERDF(CZ) CZ.02.1.01/0.0/0.0/18_046/0015586
Institutional support: RVO:61388955 ; RVO:61388980 ; RVO:61389013
Keywords : Aromatic compounds * Catalysts * Group 14 compounds
OECD category: Physical chemistry; Polymer science (UMCH-V); Inorganic and nuclear chemistry (UACH-T)
Impact factor: 12.9, year: 2022
Method of publishing: Open access
https://pubs.acs.org/doi/10.1021/acscatal.3c04011?ref=PDF

Borane cluster-based porous covalent networks, named activated borane (ActB), were prepared by cothermolysis of decaborane(14) (nido-B10H14) and selected hydrocarbons (toluene, ActB-Tol, cyclohexane, ActB-cyHx, and n-hexane, ActB-nHx) under anaerobic conditions. These amorphous solid powders exhibit different textural and Lewis acid (LA) properties that vary depending on the nature of the constituent organic linker. For ActB-Tol, its LA strength even approaches that of the commonly used molecular LA, B(C6F5)3. Most notably, ActBs can act as heterogeneous LA catalysts in hydrosilylation/deoxygenation reactions with various carbonyl substrates as well as in the gas-phase dehydration of ethanol. These studies reveal the potential of ActBs in catalytic applications, showing (a) the possibility for tuning catalytic reaction outcomes (selectivity) in hydrosilylation/deoxygenation reactions by changing the material’s composition and (b) the very high activity toward ethanol dehydration that exceeds the commonly used γ-Al2O3 by achieving a stable conversion of ∼93% with a selectivity for ethylene production of ∼78% during a 17 h continuous period on stream at 240 °C.
Permanent Link: https://hdl.handle.net/11104/0346502