Microwave absorption and potential barrier for orientation in COS adsorbed on NaCl

Abstract

Microwave absorption of COS adsorbed on finely powdered NaCl has been investigated in the 9000 MHz region. From the T tan δ against temperature dependence, the relaxation time and free energy of activation for orientation were calculated. The energy of interaction of the molecule with the solid adsorbent was computed for different adsorption sites and orientations of the adsorbate and as a function of angle of rotation. The calculated values of heat of adsorption and potential barrier for orientation were in good agreement with the experimental ones.