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Computer Modeling of Strong Acid Cation Exchangers on Styrene: Divinylbenzene Matrix

  • V. S. Soldatov
  • V. M. Zelenkovskii
Chapter

Abstract

This chapter is a review of the authors’ works on the mathematical and computer modeling of ion exchangers on styrene–divinylbenzene matrix. A mathematical model based on the concept of influence of neighboring exchange sites on the properties of each other allowed explaining the dependence of selectivity and additive properties of the ion exchange system on the degree of ion exchange. The information of interaction between the nearest neighbors and water molecules in the vicinity of the functional groups as well of the structures on the fragments of the polymeric structure of the ion exchanger has been obtained using quantum chemistry nonempirical ab initio calculations. These data have been obtained for different degrees of hydration (0–10 water molecules per sulfonic group) and the following counter ions: H+, Li+, Na+, K+, Rb+, Cs+, Ag+, Be2+, Mg2+, Ca2+, Sr2+, Ba2+, Cd2+, Ni2+, and Pb2+. The mathematical modeling as well as molecular mechanic and quantum chemistry calculations is consistent with the main concepts used in interpreting of ion exchange equilibria: a concept of nonregularity of the exchange sites in polymeric ion exchangers and competitive interaction of the counter ions with the fixed ion and water molecules.

Keywords

Water Molecule Sulfonic Group Hydration System Sorption Complex Effective Electrical Charge 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgment

This work has been supported by Belarus foundation for the fundamental research, grants No: X09-091.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Institute of Physical Organic ChemistryBelarus National Academy of SciencesMinskRepublic of Belarus
  2. 2.Lublin University of TechnologyLublinPoland

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