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| TNT在超临界二氧化碳中的溶解特性 | |
| 引用本文： | 闻利群,张同来,秦清风.TNT在超临界二氧化碳中的溶解特性[J].含能材料,2010,18(3):278-281. |
| 作者姓名： | 闻利群 张同来 秦清风 |
| 作者单位： | 1. 中北大学化工与环境学院,山西,太原,030051;北京理工大学宇航科学技术学院,北京,100081 2. 北京理工大学宇航科学技术学院,北京,100081 3. 中北大学化工与环境学院,山西,太原,030051 |
| 基金项目： | 兵器青年创新基金(编号: HZY06030202-7) |
| 摘 要： | 通过对比不同浓度的TNT/乙腈、TNT/丙酮、TNT/甲苯溶液的紫外吸收曲线,以乙腈作参比溶剂,用紫外分光光度计测定了温度为303,308,313,318,323 K,压力为10～25 MPa条件下三硝基甲苯(TNT)在超临界二氧化碳中的溶解度,并建立了波长为248 nm时TNT-乙腈溶液的浓度-吸光度关系。结果表明,在低压条件下(小于15 MPa),TNT炸药在超临界二氧化碳中的溶解度随着温度的升高略有降低;但随着压力增大(大于15 MPa),溶解度随温度的升高而增大。TNT在超临界二氧化碳中的溶解度较高,在试验范围内,每克二氧化碳中最多能溶解14 mg的TNT。 |
| 关 键 词： | 超临界二氧化碳 TNT 紫外分光光度计 溶解度 |
| 收稿时间： | 9/8/2009 8:55:52 PM |
| 修稿时间： | 2009/11/12 0:00:00 |
Solubility of TNT in Supercritical Carbon Dioxide |
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| WEN Li-qun,ZHANG Tong-lai and QIN Qing-feng.Solubility of TNT in Supercritical Carbon Dioxide[J].Chinese Journal of Energetic Materials,2010,18(3):278-281. | |
| Authors: | WEN Li-qun ZHANG Tong-lai and QIN Qing-feng |
| Affiliation: | North University of China |
| Abstract: | The UV-Vis absorbance data of TNT/acetone,TNT/toluene and TNT/acetonitrile with different concentrations were measured. Acetonitrile was used as recrystallizing solvent,and the solubility of TNT in supercritical carbon dioxide(SC-CO2) was tested at 303,308,313,318, 323 K and at pressure range of 10-25 MPa. The relationship of concentration and absorbance of TNT/acetonitrile solution at 248 nm wavelength was established. The results show that the solubility of TNT in SC-CO2 decreases with increasing of the temperature at the pressure (less than 15 MPa). However,it will increases with increasing of the temperature at high pressure (more than15 MPa). TNT has a high solubility in SC-CO2 and its value can get up to 14 mg TNT per gram of CO2. |
| Keywords: | physical chemistry supercritical carbon dioxide(SC-CO2) TNT ultraviolet-visible(UV-Vis) |
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