论文部分内容阅读
对 Cu-蒙脱石、Cu-蒙脱石的热产物及其复水产物进行了 XRD、EPR和 DTA研究 .在 Cu-蒙脱石的 EPR谱中同时记录到了 g=2 .1 4、g=2 .0 7(精细结构线 )、g～ 2 .7- 2 .2 (超精细结构线 ) 3组 Cu2 +的信号 ,分别对应于蒙脱石层间水合铜离子、进入 Si-O四面体片复三方形孔洞和铝氧八面体空位中的 Cu2 +,阐明了蒙脱石对重金属离子的吸附以交换吸附和专性吸附 2种方式进行 .
The thermal products of Cu-montmorillonite and Cu-montmorillonite and their rehydration products were studied by XRD, EPR and DTA. In EPR spectra of Cu-montmorillonite, g = 2.14, g = 2 .0 7 (fine structure line), g ~ 2 .7-2.2 (hyperfine structure line) The signals of Cu2 + in the three groups correspond to the hydrated copper ions in the interlayer of montmorillonite and enter into Si-O The Cu2 + in the complex cubic voids and the vacancies of the octahedral Al4O4 shows that the adsorption of heavy metal ions by montmorillonite is carried out in two ways: exchange adsorption and specific adsorption.