Open AccessThermal behavior of Sr-form of gordaite
Author(s) -
Zlatka Delcheva,
Tsveta Staminirova,
Nadia Petrova
Publication year - 2021
Publication title -
spisanie na bʺlgarskoto geologičesko družestvo/spisanie na bʺlgarskoto geologičesko družestvo
Language(s) - English
Resource type - Journals
eISSN - 1314-8680
pISSN - 0007-3938
DOI - 10.52215/rev.bgs.2021.82.3.19
Subject(s) - thermal decomposition , decomposition , dehydration , chemistry , ion exchange , thermal , ion , inorganic chemistry , analytical chemistry (journal) , mineralogy , thermodynamics , chromatography , organic chemistry , physics , biochemistry
Cation-exchanged Sr-form of gordaite was successfully obtained from Ca-form of gordaite by an ion-exchange reaction. Data of XRD, SEM-EDS and DTA-TG-MS were used to characterize the Sr-form. Thermal decomposition of Sr-gordaite was studied for the first time in regards of thermal events and mass loss during volatile releasing. It was found similarity with Sr-gordaite and Ca-gordaite in terms of processes, type, and amount of volatiles released, but also some differences were found concerning the temperature correspondence of the volatiles evolving and the type of thermal decomposition products. The influence of the exchangeable cations (Na, Ca, or Sr) on the dehydration of the interlayer in the gordaite type structure were also established.