Lewis Acidic Aluminosilicates: Synthesis, 27Al MQ/MAS NMR, and DFT-Calculated 27Al NMR Parameters
Martin Kejik,
Jiri Brus,
Lukas Jeremias
et al.
Abstract:Porous aluminosilicates are functional materials of paramount importance as Lewis acid catalysts in the synthetic industry, yet the participating aluminum species remain poorly studied. Herein, a series of model aluminosilicate networks containing [L−AlO 3 ] (L = THF, Et 3 N, pyridine, triethylphosphine oxide (TEPO)) and [AlO 4 ] − centers were prepared through nonhydrolytic sol−gel condensation reactions of the spherosilicate building block (Me 3 Sn) 8 Si 8 O 20 with L−AlX 3 (X = Cl, Me, Et) and [Me 4 N] [AlC… Show more
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