The method is to adopt phosphate and the mixture of hydrochloric acid and nitric acid to dissolve the samples,and then to determine the total w(Al) with Inductively Coupled Plasma Atomic Emission Spectrometry in proper conditions.

It was found that mixed rare earth nitrates are very good catalysts for the synthesis of triacetin.

The results show that as the initial mass increases,the exothermic peak on double-base propellant will shift to the lower temperature,the activation energy and the heat of reaction on double-base propellant decrease gradually,but the exothermic peak,the activation energy and the heat of reaction on multi-nitrate ester propellant do not shift.