Abstract
Mesoporous alumina γ-Al 2 O 3 with high specific surface area and large pore volume is prepared by using a facile reverse precipitation method from sodium aluminate and nitric acid. The effects of terminal pH value, aging time and thermal stability on the characterization of γ-Al 2 O 3 are studied by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) method and scanning electron microscopy (SEM). The results show that γ-Al 2 O 3 with better properties can be obtained by changing the preparation parameters. High BET surface area of 340 m 2 /g can be obtained by calcining at 500 °C for 4 h with large pore volume of 0.90 cm 3 /g and average pore size of 7.6 nm. After calcining at 1000°, the surface area is still 86 m 2 /g and the pore volume is 0.37 cm 3 /g.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
