A DIELECTRIC STUDY OF SYNTHETIC LINDE TYPE-A ZEOLITE .2. DIELECTRIC PROPERTIES OF 5-A WITH ADSORBED AMMONIA SULPHUR DIOXIDE CARBON DIOXIDE AND N-PENTANE

The dielectric properties of the Linde Molecular Sieve Zeolite Type 5-A with a series of polar and non-polar adsorbates (NH3, SO2, CO2 and n-C5H12) have been investigated in the frequency range 5 Hz to 148 kHz. A region of dielectric absorption is observed which has been assigned to a jumping process involving the interstitial cations. A possible mechanism for the process is discussed and the results analysed on the basis of the apparent dipole moment, associated with the cation jump, which is obtained from the dielectric absorption parameters. The theoretical basis of the analysis is given in an appendix. Plots of the permittivity increment against adsorbate content for polar adsorbates are discussed in terms of the rotational mobility of the sorbed phase. © 1969.