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以间苯二酚和甲醛为原料， Ca(OH)2为催化剂，经溶胶—凝胶过程得水凝胶 ;以超临界 CO2干燥水凝胶，得到网络间充满气体的固态材料气凝胶，再经高温热解得炭气凝胶。 TEM表征结果显示：气凝胶和炭气凝胶均具有规则的纳米网络结构，网络节点粒径约 10 nm，典型网络孔径小于 50 nm。
Resorcinol and formaldehyde as raw materials, Ca (OH) 2 as a catalyst, the hydrogel obtained by the sol-gel process; supercritical CO2 drying hydrogel to obtain a gas-filled solid state material between the network airgel, After pyrolysis of carbon airgel. The results of TEM characterization showed that the aerogels and carbon aerogels all have a regular network structure. The size of network nodes is about 10 nm and the typical network pore size is less than 50 nm.