Monitoring of hydrolysis in natural zeolite-H_2O systems by means of PH and electrical conductivity measurements

摘要

Hydrolysis of a natural zeolite and of the same zeolite converted into its Na~+ form by conditioning with 2M NaCl, has been crrried out with high purity ion-free water by means of the batch method. The process of hydrolysis was monitored by continuous measurements of changes in pH values and in electrical conductivity in the zeolite-water suspension. The results obtained for the hydronium ion exchange have been analysed kinetically according to the heterogeneous diffusion model and the first-order rate model.