摘要
借助差热分析、热重分析等分析手段,研究了有机蒙脱石的热性能以及烷基铵在层间的吸附方式,建立了一种烷基铵层间有效吸附量定量分析的方法。热重分析表明,有机蒙脱石和钠蒙脱石的热性能不同,钠蒙脱石可以吸附更多的层间水,有机蒙脱石中吸附的烷基铵在230～480℃之间时完全分解。通过烷基铵层间吸附量的定量分析模型,可以根据改性剂的用量和烧失量,准确的计算出烷基铵的有效吸附率和有效摩尔吸附量。
Using differential thermal analyse （DTA）, thermalgravimetric analyse （TGA）, the thermal property of Na- montmorillonite（Na-mont） and organomontmorillonite（OM） was compared, the adsorption state of intercalated cations in the layer of organomontmorilllonite was investigated. A new method for quantitative characterization of the alkyl-ammonium adsorbed in the layer was established. TGA results showed that OM and Na-mont have different thermal property, Na-mont hold more free water in the layers, and the intercalated alkyl-ammonium in OM can fully decompose between the temperature of 230-480℃. Based on the dosage of alkyl-ammonium and loss of ignition, the intercalation efficiency and effective dosage can be calculated.
出处
《中国非金属矿工业导刊》
2009年第2期30-32,49,共4页
China Non-Metallic Minerals industry
基金
国家自然科学基金(50774050)资助
关键词
有机蒙脱石
热性能
烷基铵
有效摩尔吸附量
有效吸附率
organomontmorillonite
thermal property
alkyl-ammonium
effective dosage
intercalation efficiency
