High efficient synthesis and thermal behavior of 3-cyano-4-amino-1, 2, 4-1H-triazole

被引：0

作者：

Liu Y.-J. ^{[1
,2
]}

Wang Y.-L. ^{[1
,2
]}

Zhao B.-D. ^{[1
]}

Gao F.-L. ^{[1
]}

Chen B. ^{[1
]}

Hu L. ^{[3
]}

机构：

[1] Xi'an Modern Chemistry Research Institute, Xi'an

[2] State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an

[3] China Ordance Industrial Standardization Research Institute, Beijing

来源：

Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2021年 / 35卷 / 01期

关键词：

3-cyano-5-amino-1; 2; 4-1H-triazole; High efficiency synthesis; In-situ pyrolytic; Thermal decomposition;

D O I：

10.3969/j.issn.1003-9015.2021.01.011

中图分类号：

学科分类号：

摘要：

3-cyano-5-amino-1, 2, 4-1H-triazole (ATCN) was synthesized via condensation, cyclization, esterification, amination and oxidation with aminoguanidine bicarbonate as a raw material. The oxidation reaction system, temperature, and time was optimized as the key steps for ATCN synthesis, and the yield of ATCN was upgraded from 37.0% as reported to 81.6%. ATCN was characterized by nuclear magnetic resonance (NMR), infrared absorption spectrum (IR) and element analysis, and its thermal decomposition and pyrolytic properties were investigated by DSC and in-situ IR. The thermokinetic analysis results show that the first thermal decomposition peak temperature is 163.01 ℃, which is corresponding to the fracture of amino and cyano groups. The second thermal decomposition peak temperature is 244.29 ℃, which is related to the fracture of triazole ring. In addition, through thermodynamic calculation, the activation energy, activation enthalpy, activation Gibbs free energy and activation entropy of the first thermal decomposition process of ATCN are 156.21, 153.26, 109.80 kJ∙mol-1 and 103.40 J∙K-1∙mol-1, respectively. © 2021, Editorial Board of Journal of Chemical Engineering of Chinese Universities". All right reserved."

引用

页码：92 / 99

页数：7

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