Method for determining the filling ratio or the quality of a gas storing catalyst

摘要

The method involves measuring the change of at least one physical property of the storage material (12) which changes during the storage process. The degree of filling or quality is determined. The process is used to determine the degree of filling or quality of a substance of a storage material (12) gas storage catalyst (10). Preferred process: The change of complex electrical impedance is measured. Measuring the complex impedance occurs at one or more frequencies from frequency range between 0 Hz, i.e. direct voltage and upper frequency boundary at which the wavelength corresponding to measuring frequency is essentially smaller than dimensions of measuring apparatus.