Aluminosilicate-Supported Catalysts for the Synthesis of Cyclic Carbonates by Reaction of CO₂ with the Corresponding Epoxides.

ABSTRACT: Functionalized aluminosilicate materials were studied as catalysts for the conversion of different cyclic carbonates to the corresponding epoxides by the addition of CO₂. Aluminum was incorporated in the mesostructured SBA-15 silica network. Thereafter, functionalization with imidazolium chloride or magnesium oxide was performed on the Al_SBA-15 supports. The isomorphic substitution of Si with Al and the resulting acidity of the supports were investigated via ²⁷Al magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy and NH₃ adsorption microcalorimetry. The Al content and the amount of MgO were quantified via inductively coupled plasma optical emission spectroscopy (ICP-OES) analysis. The anchoring of the imidazolium salt was assessed by

SUBMITTER: Atzori L 

PROVIDER: S-EPMC9782148 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature