The Investigation of the adsorption character of carbon aerogels

摘要

The influence of pyrolysis temperature anddensity on the microstructure of carbon aerogels isstudied by nitrogen adsorption analysis. Resorcinol-formaldehyde (RF)aerogel and carbon aerogels all givetype II isotherms and hysteresis loops of type A. Carbonaerogel pyrolized at 600℃ has the largest specificsurface area (SSA) The trend of pore size distribution ofRF aerogel and its pyrolized derivatives is same. Carbonaerogls with low and high density have different pore sizedistribution, while carbon aergel with low density has greater SSA.