中文摘要：

对山西阳泉煤层黏土煤矸石中的铵伊利石进行了Fourier变换红外光谱分析、电子探针分析、元素分析、热重-差热分析和高温衍射分析。根据化学成分结果,按O_（10）（OH）_2及四面体阳离子数之和为4计算得其晶体化学式为：[（NH_4）_（0.65）K_（0.02）Na_（0.03）Ca_（0.01）]_（0.71）[Al_（2.04）Mg_（0.01）]_（2.05）[（Si_（3.14）Ti_（0.02）Al_（0.84））_4O_（10）]（OH）_2。铵伊利石的晶体结构具有较好的热稳定性,晶体结构随温度的变化分为3个阶段：400℃以前结构保持稳定,层间[NH_4]~＋表现为缓慢释放的特征;400～900℃层间[NH_4]~＋分解,N快速释放,同时伴随着羟基脱除,表现为层间距缩小直至层状结构垮塌,但TOT结构单元层仍保持一定的完整性,[NH_4]~＋分解的精确温度为573℃;900～1300℃为相变阶段,铵伊利石保留的不完整结构向非晶质转变,最后重新结晶生成莫来石和高温方石英。

英文摘要：

An ammonium illite sample,which was a gangue from Yangquan coal mine in Shanxi province,was investigated by Fourier transform infrared spectroscopy,electronic probe microscopic analyzer,element analyzer,thermogravimetric differential scanning calorimetry and high temperature X-ray diffraction.According to the chemical composition of the sample,the crystallographical formula calculated based on O_（10）（OH）_2 and at the total tetrahedral cations of 4 is[（NH_4）_（0.65）K_（0.02）Na_（0.03）Ca_（0.01）]_（0.71）[Al_（2.04）Mg_（0.01）]_（2.05）[（Si_（3.14）Ti_（0.02）·Al_（0.84））_4O_（10）]（OH）_2.The structure of ammonium illite had a good thermal stability.There are three stages for the evolution of the crystal structure with temperature.In the first stage,the structure is stable,and N from the interlayer of NH_4-illite is released below 400℃. In the second stage,the layer thickness is reduced until the layered structure is collapsed and the TOT silicate framework can be kept in the range of 400 to 900℃mainly due to the fast decomposition of[NH_4]~＋ and de-hydroxylation.In the third stage,the semi-crystalline structure is transformed to amorphous in the range of 900 to 1 300℃,and the sample is re-crystallized to mullite and cristobalite.