【摘要】 根据X射线衍射、电子探针等实验数据综合分析和理论计算,讨论了柱撑基团[Al13O4(OH)24(OH2)12]7+和[Ti20O32(OH)12(OH2)18]4+在粘土矿物结构单元层层间的分布,铝基和钛基的笼状离子作用范围分别相当于粘土矿物的10个和6个晶胞。羟基铝柱撑蒙脱石层间孔道高度为0.9～1.2nm,直径为1.5nm,理论孔道率为84%,有效孔道率为56%。钛基柱撑蒙脱石的层间孔道高度为1.34～1.60nm,直径为1.0nm,理论孔道率为75%,有效孔道率为50%。根据柱撑离子基团的两种类型,可把柱撑粘土分为Keggin型柱撑粘土和Dawson型柱撑粘土。更多还原

【Abstract】 Based on synthetic analysis and calculation of data tested by XRD and EPMA, this article discusses interlayer distribution of 13O7+ and 4+ in clay minerals. The sizes of the two cage cations are about 10 and 6 crystal cells of clay mineral. The height of interlayer pass of hydroxylAl pillared montmorillonite is 0.9-1.2nm, the diameter is 1.5nm. The theoretical pass rate is 84%, effectual pass rate is 56%. The height of interlayer pass of Tipillared montmorillonite is 1.34-1.6 nm, the diameter is 1.0 nm. The theoretical pass rate is 75%, effectual pass rate is 50%.On the basis of the two cage cations, it is proposed that the crystal structure models of pillared clays can be divided into Keggin type pillared clay and Dawson type pillared clay.更多还原