Background: Amorphous silica is widely used in cement and ceramic industry and also
for the synthesis of many advanced materials.
Method: Generally, it is produced using sol-gel and precipitation method. In the present study,
amorphous SiO2 was extracted from acidic pumice collected from Van Basin in Turkey by alkaline
Result: The identification and chemical compositions of the acidic pumice and the amorphous SiO2
were determined by XRD, FTIR, XRF and BET.
Conclusion: The results showed that highly pure amorphous silica powder having a remarkable surface
area (358 m2/g) with meso-pore structure was successfully extracted from the acidic pumice samples.