5-Nitro-3H-1,2,4-triazol-3-one (NTO) also known as nitrotriazolone is a low sensitive and thermally stable high energetic material containing a heterocyclic ring. NTO can be used to substitute highly sensitive high energetic materials that are thermally and photochemically less stable. This review provides a survey of various routes utilized for the synthesis of NTO, changes in its morphology by varying solvent systems, characterization, decomposition mechanisms, and use of metal oxides and other catalysts to enhance or diminish the thermal decomposition temperature of NTO. The review covers research on the synthesis, thermal decomposition mechanism, and catalytic effect of NTO additives from past four decades (1987–2021).

中文翻译：

5-Nitro-3 H -1,2,4-triazol-3-one (NTO) 也称为硝基三唑酮，是一种低灵敏度且热稳定的高能​​材料，含有杂环。NTO 可用于替代热和光化学稳定性较差的高灵敏度高能材料。本综述综述了用于合成 NTO 的各种途径、通过不同溶剂系统改变其形态、表征、分解机制以及使用金属氧化物和其他催化剂来提高或降低 NTO 的热分解温度。该综述涵盖了过去 40 年（1987-2021 年）NTO 添加剂的合成、热分解机制和催化作用的研究。