Cation Separations with High Capacity Swelling Micas

建议标题：阳离子分离高容量溶胀胶束建议编号：CTS-0242285主要研究人员：Sridhar KomarneniInstitution：宾夕法尼亚州立大学拟议研究的目的是合成和表征用作阳离子交换材料的新型云母。在以前的工作中，合成了同时具有四面体和八面体负电荷的云母。电荷的位置预计会对离子的容量和选择性产生影响。在本工作中，我们将研究同时带有四面体和八面体负电荷的钠基云母交换剂中的基本阳离子交换和平衡。本课程将研究铯、锶、钡、镭、铜、镍和锌等离子的交换动力学和平衡。云母将用X射线粉末衍射、红外吸收光谱、差热分析和扫描电子显微镜进行表征。就更广泛的影响而言，这些研究可能会导致在金属回收、催化和废水处理方面的应用。由于云母是稳定的结构，它们是修复受放射性物质污染的地点的候选材料。教育部分将涉及正常的指导

AbstractProposal Title: Cation Separations with High Capacity Swelling MicasProposal Number: CTS-0242285Principal Investigator: Sridhar KomarneniInstitution: Pennsylvania State UniversityThe objective of the proposed research is to synthesize and characterize novel micas for use as cation-exchange materials. In previous work, micas with both tetrahedral and octahedral negative charge were synthesized. The location of the charge is expected to have implications for capacity as well as selectivity of ions. In the present work fundamental cation-exchange and equilibria in sodium-based mica exchangers with both tetrahedral and octahedral negative charges will be investigated. Exchange kinetics and equilibria involving ions such as cesium, strontium, barium, radium, copper, nickel, and zinc will be investigated. Micas will be characterized using X-ray powder diffraction, infrared absorption spectroscopy, differential thermal analysis, and scanning electron microscopy. In terms of the broader impacts, the studies may lead to applications in metal recovery, catalysis, and wastewater treatment. Because micas are stable structures, they are candidates for use in remediation of sites contaminated by radioactive species. The educational component will involve the normal mentorin