Abstract
Active alumina (γ-Al2O3) was prepared from NaAlO2 and HNO3 by a reverse precipitation method with addition of polyethylene glycol (PEG). The effect of PEG additived in the different stages during the preparing process was investigated by powder X-ray diffraction (XRD), fourier transform infrared analysis (FTIR) and nitrogen adsorption-desorption. It was found that the mesoporous alumina sample with the PEG additived into the initial HNO3 solution was the most effective at improving the surface area and the pore volume of γ-Al2O3.
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