Synthesis of Mesoporous γ-alumina Assisted by Room Temperature Ionic Liquid

Boehmite Sols were used as aluminum precursors for preparing mesoporous alumina with crystalline framework walls in the presence of 1-butyl-3-methyl imidazolium tetrafluoroborate([BMIM][BF4]).The structure of the γ-Al2O3 was examined by N2 physical adsorption,X-ray powder diffraction(XRD),transmission electron microscope(TEM),and solid state 27Al MAS NMR spectra.The results show that alumina with the three-dimensional interconnected scaffold-like channels displays very rich porosities with large mesopores,and the addi-tion of [BMIM][BF4] could improve the pore properties of alumina significantly.