Title :
Experimental determination of the dispersion spectrum of zeolites
Author :
Vélez, Manuel Herná ndez ; Roque-Malherbe, Rolando
Author_Institution :
Fac. de Fisica, Inst. Superior Pedagogico EJV, Ciudad de La Habana, Cuba
Abstract :
A device is described which measures complex permittivity. Results are presented which were obtained with this device when studying the dielectric properties of zeolite samples. The device is very reliable and precise. It allows for a frequency sweep from 0.03 to 100 kHz and from 0.001 to 10 MHz. Moreover, it can determine very small capacitances and has also been used to measure the dispersion spectrum under conditions of adsorption of gases and vapors. As a result of the study, some important deductions concerning the structure and heterogeneity of zeolites have been made
Keywords :
adsorption; aluminium compounds; calcium compounds; capacitance measurement; permittivity; permittivity measurement; sodium compounds; 0.03 kHz to 10 MHz; Al-Ca-Na-Si-H2O; H2O; adsorption; capacitance measurement; clinoptilolite; complex permittivity; dispersion spectrum; electret; erionite; mordenite; permittivity measurement; zeolites; Dielectric devices; Dielectric measurements; Dispersion; Equations; Feedback circuits; Frequency; Gases; Permittivity measurement; Polarization; RLC circuits;
Conference_Titel :
Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)
Conference_Location :
Oxford
DOI :
10.1109/ISE.1988.38631
