Effects of calcination temperature on the pore size and wall crystalline structure of mesoporous alumina

In this paper, mesoporous alumina with different pore sizes and wall crystalline structures was synthesized at calcination temperatures over 550 °C. The characterization of the samples calcined at 550, 800, 1100, and 1300 °C, respectively, was performed using TEM, XRD, FTIR, TG/DTA, and N2 adsorption/desorption techniques. The correlation between pore size and wall crystalline structure on calcination temperature was systematically investigated.

XRD results of as-synthesized mesostructured alumina (A) and MA after calcination at 550 °C (B), 800 °C (C), 1100 °C (D), and 1300 °C (E) confirm the formation of MA with different crystalline structures.Figure optionsDownload as PowerPoint slide