Preparation method of carbon/ zirconium/ aluminum composite aerogel material

The invention relates to a preparation method of a carbon/zirconium/aluminum composite aerogel material. The method adopts a sol-gel method, takes resorcinol and formaldehyde as a carbon source, inorganic zirconium salt as a zirconium source, inorganic aluminum salt as an aluminum source, epoxide as a gel accelerant, deionized water as a hydrolytic agent and alcohol as a solvent, and comprises the steps of preparing composite wet gel in presence of a basic catalyst; carrying out aging, solvent replacement, CO2 supercritical drying, high-temperature heat treatment and the like on the wet gel to obtain the high temperature-resistant carbon/zirconium/aluminum composite aerogel material, wherein the apparent density of the composite aerogel material is 0.18-0.35g/ cm , the specific surface area of the composite aerogel material is 430-650m /g, and the pore size distribution is 5-50nm. The method takes the cheap inorganic zirconium salt and inorganic aluminum salt as raw materials; the aerogel material prepared by