Facile synthesis of three kinds triazole salts of 2, 4, 5-trinitroimidazole and their thermal decomposition properties. Issue 2 (3rd April 2023)

• Record Type: Journal Article
• Authors: Lian, Pengbao; Chen, Lizhen; Huang, Daozhen; Lu, Zhiyan; Wu, Nana; Wang, Jianlong; Chen, Jian
• Is Part Of: Journal of energetic materials. Volume 41:Issue 2(2023)
• Page Start: 221
• Page End: 235
• Publication Date: 2023-04-03
• Subjects: Triazole salt of 2 -- 4 -- 5-trinitroimidazole -- single crystal structure -- DSC -- arc -- self-accelerating decomposition temperature; Explosives -- Periodicals; Propellants -- Periodicals; 662.2
• DOI: 10.1080/07370652.2021.1942594
• Languages: English
• ISSNs: 0737-0652

Abstract

ABSTRACT: In this paper, 1, 2, 4-triazolium 2, 4, 5-trinitroimidazolate (2 ), 3-amino-1, 2, 4-triazolium 2, 4, 5-trinitroimidazolate (3 ) and 4-amino-1, 2, 4-triazolium 2, 4, 5-trinitroimidazolate (4 ) were synthesized based on the method of acid-base neutralization and precipitation, which is a simple method compared with the method in Gao's literature. These compounds were characterized by FT-IR, NMR, elemental analysis. The structure of (2 ) was further confirmed by single-crystal X-ray diffraction. Thermal decomposition performances of (2 )-(4 ) were tested using differential scanning calorimetry (DSC) and accelerating rate calorimeter (ARC). The DSC curves of (2 )-(4 ) show that they all have good thermal stability and the order of thermal stability is (4 ) > (2 ) > (3 ). ARC test data calculation results show that the thermal stability of (2 )-(4 ) is (3 ) > (2 ) > (4 ). The test results show that the thermal stability of compounds (2 )-(4 ) under non-adiabatic and adiabatic conditions was quite different. The storage temperature of (2 ), (3 ) and (4 ) does not exceed 420.93 K, 435.78 K, and 393.69 K, respectively, and they will not undergo self-accelerating decomposition.