Lewis Acidic Aluminosilicates: Synthesis, ²⁷Al MQ/MAS NMR, and DFT-Calculated ²⁷Al NMR Parameters.

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-AlO₃] (L = THF, Et₃N, pyridine, triethylphosphine oxide (TEPO)) and [AlO₄]^- centers were prepared through nonhydrolytic sol-gel condensation reactions of the spherosilicate building block (Me₃Sn)₈Si₈O₂₀ with L-AlX₃ (X = Cl, Me, Et) and [Me₄N] [AlCl₄] compounds in THF or toluene. The substoichiometric dosage of the Al precursors ensured complete condensation and uniform incorporation, with the bulky spherosilicate forcing a s

SUBMITTER: Kejik M 

PROVIDER: S-EPMC10848260 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature