A novel synthetic route for magnesium aluminate (MgAl2O4) particles using metal–chitosan complexation method

In this paper a novel and simple route for the preparation of magnesium aluminate (MgAl2O4) is proposed. The method was developed with the objective of obtaining a material with more porous structure and greater surface area compared with other spinel preparation methods, based on the formation of a metal–chitosan complex. The structural properties of the material were investigated by X-ray diffraction (XRD), N2 adsorption/desorption isotherms (BET and BJH methods), infra-red (IR) spectroscopy and thermogravimetric analysis (TGA). Through this route, porous MgAl2O4 powder with a high specific surface area was obtained at low temperature.

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► A novel and simple route for the preparation of magnesium aluminate (MgAl2O4) is proposed.
► Magnesium aluminate (MgAl2O4) particles prepared by metal–chitosan complexation method were obtained.
► Porous MgAl2O4 powder with a high specific surface area was obtained at low temperature.