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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.49A [2010] >
IJC-A Vol.49A(10) [October 2010] >
| Title: | Thermodynamics and kinetics of ion exchange of a hybrid cation exchanger, zirconium diethylene triamine pentamethylene phosphonate |
| Authors: | Patel, Parimal
Chudasama, Uma |
| Keywords: | Ion exchange
Cation exchanger
Hybrid ion exchanger
Kinetics
Thermodynamics
Zirconium phosphonate |
| Issue Date: | Oct-2010 |
| Publisher: | NISCAIR-CSIR, India |
| IPC Code: | Int. Cl.9 B01J39/02 |
| Abstract: | A novel hybrid cation exchange material of the class of tetravalent metal
acid salt, zirconium diethylene triamine pentamethylene phosphonate, has been
synthesized by sol gel method. The material has been characterized by elemental
analysis, FTIR, TGA and DSC studies, X-ray diffraction studies and SEM.
Physico-chemical and ion exchange characteristics have also been determined.
Chemical stability of the material has been assessed in various acids, bases
and organic solvent media. The equilibrium exchange of Mg2+, Ca2+,
Sr2+ and Ba2+ ions with the H+ ions contained
in the ion exchanger has been studied at varying temperatures with constant
ionic strength. On the basis of the exchange isotherms, various thermodynamic
parameters such as equilibrium constant, standard Gibbs free energy, entropy
and enthalpy and kinetic parameters such as self-diffusion coefficient, energy
of activation and entropy of activation have been evaluated under the
conditions favouring a particle diffusion-controlled mechanism. |
| Page(s): | 1318-1324 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.49A(10) [October 2010]
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