Synthesis process optimization of 4,4′-azobis (1,2,4-triazole) in a continuous stirred tank reactor (CSTR)

4,4′-azobis(1,2,4-triazole) (Atrz) is an excellent thermally stable explosive that is widely used to synthesize high-energy nitrogen-rich compounds. However, current methods for synthesizing this compound are low-yield and exothermic. In order to overcome these limitations, in this study, a continuous method based on the use of continuous stirred tank reactor (CSTR) was used to prepare Atrz for the first time, and the optimal experimental conditions were obtained by single factor experimental method and orthogonal experimental method. The yield of Atrz increased from 20%-30% to 71.84%, and the purity reached 98.54%. The use of CSTR enables materials to be mixed efficiently, making the reaction process efficient and environmentally friendly. At the same time, this method has the advantages of simple reaction process, easy large-scale continuous production, and high yield.