1. Structure and Properties of Hydrotalcite Using Electrostatic Potential Energy Model
- Author
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Zhe-ming Ni, Guoxiang Pan, Li-geng Wang, Caiping Fang, Wei-hua Yu, and Dan Li
- Subjects
Ion exchange ,Hydrotalcite ,Computational chemistry ,Chemistry ,Electric potential energy ,Physical chemistry ,Charge density ,Thermal stability ,Charge (physics) ,Physical and Theoretical Chemistry ,Potential energy ,Layer (electronics) - Abstract
The electrostatic potential energy model of hydrotalcites was based on the theory of crystallography. The anionic potential energy of MgAl-hydrotalcites, with 20 layers and 2107 anions per layer, was calculated, and the anionic stability of the hydrotalcites was investigated. The charge density of the layer and the distance between the adjacent anions varied with the molar ratio of Al3+=(Mg2+ + Al3+). Anionic potential energy depended on the charge and size of the anions. Calculation results remained consistent with thermal stability and the ion exchange ability reported. This model is able to predict anionic stability of the hydrotalcites.
- Published
- 2006
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