Efficient Preparation of ADN/PDO Cocrystal and Characterization of the Structure and Properties

被引:0
|
作者
Liu, Ze-Ning [1 ]
Qiao, Shen [2 ]
Ma, Fan [1 ]
Yang, Zong-Wei [2 ]
Yu, Yan-Wu [1 ]
机构
[1] School of Environment and Safety Engineering, North University of China, Taiyuan,030051, China
[2] Institute of Chemical Materials, CAEP, Mianyang,621999, China
来源
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2024年 / 32卷 / 12期
基金
中国国家自然科学基金;
关键词
Ammonium dinitramide - Ammonium dinitramide(ADN) - Co-crystals - Environmental-friendly - Hygroscopicity - Pyrazine-1,4-dioxide(PDO) - Pyrazines - Reaction crystallization - Structures and properties - X- ray diffractions;
D O I
10.11943/CJEM2024114
中图分类号
学科分类号
摘要
Herein,we develop a new method to prepare the ammonium dinitramide/pyrazine-1,4-dioxide(ADN/PDO)cocrystal,which is highly efficient and environmental-friendly due to utilizing the reaction crystallization with pure water as the solvent,and also comprehensively characterized its performance. The morphology and structure of the cocrystal were characterized by optical microscopy(OP),powder X-ray diffraction(PXRD),and single crystal X-ray diffraction(SXRD),respectively. In detail,the ADN/PDO cocrystal was prismatic and formed by the combination of ADN and PDO molecules at a molar ratio of 2∶1. Moreover,the ADN/PDO cocrystal belongs to the monoclinic crystal system with a space group of P21/c,owning a theoretical density of 1.779 g·cm-3 at room temperature. Furthermore,through the differential scanning calorimetric(DSC)measurement,it turned out that the melting point of the prepared ADN/PDO cocrystal is 113.3 ℃,which is 21.3 ℃ higher than that of ADN,and the decomposition temperature is slightly higher than that of ADN,demonstrating good thermal stability of the prepared ADN/PDO cocrystal. Then,the hygroscopicity of the prepared cocrystal,measured by the weight increment method,is significantly low at only 2.6%,while that of ADN is at 45%. In addition,calculated by the NASA CEA,the theoretical specific impulse of the cocrystal reaches 277.9 s while that of ADN is 197.5 s,demonstrating the high energy performance of the cocrystal. In conclusion,the reported method based on the reaction crystallization successfully enables the efficient production of a high-energy,low-hygroscopic ADN/PDO cocrystal,thereby facilitating the further assessment of its application performance. © 2024 Institute of Chemical Materials, China Academy of Engineering Physics. All rights reserved.
引用
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页码:1314 / 1320
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