硝酸铵+酰胺二元相图的研究  

Study on System of NH_4NO_3 and Eutectic Mixture of Acetamide+Urea

作　　者：田鹏[1] 杨家振[2] 宋溪明[2] 梁志德[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]辽宁大学化学系,辽宁沈阳110036

出　　处：《东北大学学报（自然科学版）》2003年第1期68-70,共3页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(20041005).

摘　　要：在充有高纯氮气的干燥手套箱内,将硝酸铵和乙酰胺+尿素混合,用称重法准确配制含不同硝酸铵摩尔分数的硝酸铵和乙酰胺+尿素混合样品,利用差示扫描量热法建立了硝酸铵和乙酰胺+尿素二元相图·提出了室温熔盐窗口和室温熔盐深度两个概念,用来衡量形成室温熔盐的能力及其性质·依据相图,指出了该体系能形成室温熔盐,室温熔盐窗口的组成范围是x(NH4NO3)=15%～40%;室温熔盐深度为32K·In a vacuum atmosphere glovebox system filled with dry nitrogen, over all compositions containing NH4NO3 mole fraction in NH4NO3 and the eutectic mixture of binary system acetamide+urea were accurately prepared by weighting. The phase diagram of NH4NO3 and the eutectic mixture of binary system acetamide+urea was constructed by different scanning calorimetry method. Two concepts,the window of room temperature molten salt (RTMS) and depth of RTMS,were given to represent the capability and property of RTMS. According to the phase diagram,the clear evidence for the formation of RTMS was obtained. The area of the window of RTMS is x(NH4NO3)=15%～40%; the depth of RTMS is 32?K.

关 键 词：二元相图 室温熔盐 乙酰胺 乙酰胺 尿素 硝酸铵 DSC 室温熔盐窗口 室温熔盐深度 

分 类 号：O642.4[理学—物理化学]