Effects of amino acids on solid-state phase transition of ammonium nitrate

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• 作者：Kento Shiota ; Hiroki Matsunaga…
• 关键词：Ammonium nitrate ; Amino acids ; Solid ; state phase transition ; Thermal analysis ; DSC–Raman in situ analysis
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：127
• 期：1
• 页码：851-856
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Physical Chemistry; Analytical Chemistry; Polymer Sciences; Inorganic Chemistry; Measurement Science and Instrumentation;
• 出版者：Springer Netherlands
• ISSN：1588-2926
• 卷排序：127

文摘

The purpose of this study was to obtain a better understanding of the effects of amino acids on the solid-state phase transitions of ammonium nitrate (AN). To this end, AN was combined with various amino acids in equimolar ratios and the phase transitions of the resulting mixtures were studied using differential scanning calorimetry (DSC) and in situ Raman spectroscopy. Compositional analysis was also conducted using X-ray powder diffraction (XRD), and the predicted stabilities of various molecular structures were assessed via quantum calculations. DSC and Raman results indicated that l-glycine and l-alanine inhibited the solid-state phase transitions of AN. Both XRD and calculation results suggested that AN reacts with these amino acids to form nitrate salts and that clusters are also generated by interactions between these compounds.