Method for preparing aluminum nitride by directly nitriding aluminum alkoxide

The invention discloses a method for preparing aluminum nitride by directly nitriding aluminum alkoxide, and belongs to the technical field of aluminum nitride preparation, the method comprises the following steps: S1, putting aluminum alkoxide into a kiln, raising the temperature in the kiln to 200-500 DEG C under the nitrogen atmosphere, and keeping the temperature for 1-4 hours; and S2, raising the temperature in the kiln to 1100-1600 DEG C in the nitrogen atmosphere, performing heat preservation for 2-4 h, and preparing a reaction product containing aluminum nitride. According to the method for preparing the aluminum nitride by directly nitriding aluminum alkoxide, the characteristic that the aluminum alkoxide can be thermally decomposed and carbonized under the anaerobic high-temperature condition is utilized, the carbon amount of a carbon thermal reaction can be met under the condition that other carbon sources are not introduced, the introduction amount of pollution factors is reduced, and the purity o