【摘要】 利用热重分析（ＴＧ）、差热分析（ＤＴＡ）技术对钼酸铵的热分解进行了研究．研究表明，钼酸铵的热分解经历了３个步骤：在３５３～４７３Ｋ温区，脱除部分水分子，但仍保持钼酸铵的基本结构；在４７３～５７３Ｋ温区，脱除全部水分子和部分氨分子，生成一些亚稳钼物种；当温度高于５７３Ｋ时，脱除全部氨分子，发生钼物种向氧化钼（ＭｏＯ３）的相转变更多还原

【Abstract】 In this paper, infrared spectra of seventy kinds of cyclic quateranary ammonium derivatives are reported It was found that they all had two absorbing peaks in near 1000cm -1 and 900cm -1 These characterisities can be acted as important references to indentify this kind of compound更多还原