Hidenori Yahiro1, Masato Nagata1, Masaru Shiotani1, Mikael Lindgren2, Haitao Li2, Anders Lund2
1 Department of Applied Chemistry, Faculty of Engineering, Hiroshima University, Higashi-Hiroshima 739, Japan,
2 Department of Physics and Measurement Technology, Linköping University, S-581 83 Linköping, Sweden
Motional dynamics of NO2 adsorbed on alkaline and alkaline earth metal ion-exchanged mordenites were studied by the ESR method. The temperature dependent ESR spectral line shapes were successfully analyzed by employing Heisenberg type of spin exchange model. The exchange rate was found to depend on the amount of water absorbed and the cation radius in the zeolite.