Article
Article name The Influence of Mechanical Activation on the Acid-base Properties of Zeolite-containing Rocks in the Trans-Baikal Region
Authors Dabizha O. . Candidate of Chemistry, associate professor, dabiga75@mail.ru
Khatkova A.N. Doctor of Technical Sciences, professor, alisa1965.65@mail.ru
Derbeneva T.V. graduate student, derbeneva23@mail.ru
Bibliographic description
Section Chemistry
UDK 549.67:54-145.1 (571.54/55)
DOI
Article type
Annotation The study focuses on the acid-base properties of zeolite-containing rocks of Kholinsk and Shivyrtuy deposits. The effect of mechanical activation on the number of active centers of mineral surfaces is studied with the help of the methods of conductometric and potentiometric titration of their aqueous suspensions. The optimal time and environment for the mechanochemical treatment have been established earlier by means of infrared spectroscopy. The study shows the dependence of the nature of conductivity curves on the mass content of oxides of aluminum, magnesium and calcium in the rocks. It determines the relevance and potential acidity of the initial and mechanically activated samples and reveals that the mechanical activation in the air for thirty minutes increases the basicity and the actual acidity of the studied materials. The use of the mechanochemical method allows modifying the physicochemical properties of zeolites. The study establishes a possibility to use mechanical activation in order to increase the absorption capacity of natural zeolites and their operational characteristics.
Key words mechanical activation, defects, zeolites, acidity, acid-base centers, conductometry, potentiometry.
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Full articleThe Influence of Mechanical Activation on the Acid-base Properties of Zeolite-containing Rocks in the Trans-Baikal Region