Morphology prediction of dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) crystal in different solvent systems using modified attachment energy model

doi:10.1016/j.cjche.2022.02.008

中国化学工程学报 ›› 2023, Vol. 53 ›› Issue (1): 181-193.DOI: 10.1016/j.cjche.2022.02.008

• Full Length Article • 上一篇下一篇

Morphology prediction of dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) crystal in different solvent systems using modified attachment energy model

Fang Chen¹, Tao Zhou¹, Lijie Li², Chongwei An³, Jun Li¹, Duanlin Cao¹, Jianlong Wang¹

1. School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China;
2. School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;
3. School of Environmental and Safety Engineering, North University of China, Taiyuan 030051, China

收稿日期:2021-08-24 修回日期:2022-02-18 出版日期:2023-01-28 发布日期:2023-04-08
通讯作者: Fang Chen,E-mail:f_chen@nuc.edu.cn
基金资助:
This work was supported by Fundamental Research Program of Shanxi Province (20210302123055) and (201801D221035).

Morphology prediction of dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) crystal in different solvent systems using modified attachment energy model

Fang Chen¹, Tao Zhou¹, Lijie Li², Chongwei An³, Jun Li¹, Duanlin Cao¹, Jianlong Wang¹

1. School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China;
2. School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;
3. School of Environmental and Safety Engineering, North University of China, Taiyuan 030051, China

Received:2021-08-24 Revised:2022-02-18 Online:2023-01-28 Published:2023-04-08
Contact: Fang Chen,E-mail:f_chen@nuc.edu.cn
Supported by:
This work was supported by Fundamental Research Program of Shanxi Province (20210302123055) and (201801D221035).

摘要/Abstract

摘要： In order to theoretically study the growth morphology of dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) crystal in different solvent systems, crystal–solvent models were established, and then molecular dynamics (MD) methods were adopted as a means to simulate particle motion. Modified attachment energy (MAE) model was employed to calculate the growth morphology of TKX-50. The simulation results demonstrate that COMPASS force field and RESP charge are suitable for molecular dynamics simulation of TKX-50. The morphologically dominant growth surfaces of TKX-50 in vacuum are (0 2 0), (0 1 1), (1 1 –1), (1 0 0) and (1 2 0), respectively. In water (H₂O) and N, N-dimethylformamide (DMF) solvents, the (1 1 –1) face is the largest in the habit face, the growth rate of (0 2 0) face becomes faster. With the increase of temperature, the aspect ratios of TKX-50 crystal in DMF solvent increase, and the areas of the (1 2 0) faces decrease. In ethylene glycol /H₂O mixed solvent system with volume ratio of 1/1, aspect ratio of TKX-50 is relatively small. In formic acid /H₂O mixed solvents with different volume ratios (1/4, 1/3, 1/2, 1/1 and 2/1), aspect ratio of TKX-50 is relatively small when volume ratio is 1/2.

关键词: TKX-50, Crystal morphology, Solvents, Modified attachment energy model, Molecular dynamics simulation

Abstract: In order to theoretically study the growth morphology of dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) crystal in different solvent systems, crystal–solvent models were established, and then molecular dynamics (MD) methods were adopted as a means to simulate particle motion. Modified attachment energy (MAE) model was employed to calculate the growth morphology of TKX-50. The simulation results demonstrate that COMPASS force field and RESP charge are suitable for molecular dynamics simulation of TKX-50. The morphologically dominant growth surfaces of TKX-50 in vacuum are (0 2 0), (0 1 1), (1 1 –1), (1 0 0) and (1 2 0), respectively. In water (H₂O) and N, N-dimethylformamide (DMF) solvents, the (1 1 –1) face is the largest in the habit face, the growth rate of (0 2 0) face becomes faster. With the increase of temperature, the aspect ratios of TKX-50 crystal in DMF solvent increase, and the areas of the (1 2 0) faces decrease. In ethylene glycol /H₂O mixed solvent system with volume ratio of 1/1, aspect ratio of TKX-50 is relatively small. In formic acid /H₂O mixed solvents with different volume ratios (1/4, 1/3, 1/2, 1/1 and 2/1), aspect ratio of TKX-50 is relatively small when volume ratio is 1/2.

Key words: TKX-50, Crystal morphology, Solvents, Modified attachment energy model, Molecular dynamics simulation

Fang Chen, Tao Zhou, Lijie Li, Chongwei An, Jun Li, Duanlin Cao, Jianlong Wang. Morphology prediction of dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) crystal in different solvent systems using modified attachment energy model[J]. 中国化学工程学报, 2023, 53(1): 181-193.

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Morphology prediction of dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) crystal in different solvent systems using modified attachment energy model

Morphology prediction of dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) crystal in different solvent systems using modified attachment energy model

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