郭宏垚,李冬,雷雄,赵欢娟,王小静,高嘉珮,李稳宏

• 1:西北大学化工学院

摘要(Abstract)：

在利用XRD、IC和GC-MS检测三甘醇杂质成分的基础上,通过失活评价实验研究了不同含量的固体悬浮物、热稳定盐及有机杂质对三甘醇失活度的影响规律,利用热重分析法(TG)研究了三甘醇在氮气、氧气气氛下以不同升温速率进行的热降解和氧化降解行为,并采用Coats-Redfer法和分布活化能模型(DAEM)法求解三甘醇降解动力学模型。结果表明,Fe S、Mg~(2+)、Ca~(2+)、乙二酸和甘醇酸类是影响三甘醇失活的主要杂质,且杂质含量的提高会加剧失活程度;三甘醇热降解是级数为1的一步质量损失过程,而氧化降解是两段级数为1的质量损失过程,且氧化降解活化能远低于热降解活化能;升温速率的加快可促使三甘醇热解的初始温度、失重峰温度以及热解终温均向高温方向移动。通过对三甘醇的失活分析及降解特性研究可为进一步探索三甘醇降解机理和预防溶液失活提供理论基础。

关键词(KeyWords)： 三甘醇;失活;热重分析;降解

Abstract:

Keywords:

基金项目(Foundation): 基金项目:陕西省青年科技新星(2016KJXX-32)

作者(Author): 郭宏垚,李冬,雷雄,赵欢娟,王小静,高嘉珮,李稳宏

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