Collect. Czech. Chem. Commun. 1987, 52, 1211-1215

A study of the structure stability of natural natrolite during its long-run heating

Drahoš Rykl and František Pechar

Institute of Geology and Geotechnics, Czechoslovak Academy of Sciences, 182 09 Prague 8


The structure stability of natrolite heated at 310, 350, 400, and 500 °C for a time from 7.5 min to 8 192 h was studied by weight loss measurements, infrared spectroscopic investigation and evaluation of powder X-ray diffraction data. No substantial structure changes other than partial dehydration were observed. The dehydration process is only associated with the formation of structural hydroxide groups and with short-range changes in the crystal structure arrangement.