The Influence of Mg, Na, and Li Oxides on the CO2 Sorption Properties of Natural Zeolite
Mambetova M. Dossumov K. Yergaziyeva G.
November 2024Multidisciplinary Digital Publishing Institute (MDPI)
Processes
2024#12Issue 11
This study presents a comparative analysis of the CO2 sorption properties of natural zeolites sourced from the Tayzhuzgen (Tg) and Shankanay (Sh) deposits in Kazakhstan. The Tayzhuzgen zeolite was characterized by a Si/Al ratio of 5.6, suggesting partial dealumination, and demonstrated enhanced specific surface area following mechanical activation. Modification of the Tayzhuzgen zeolite with magnesium oxide significantly improved its CO2 sorption capacity, reaching 8.46 mmol CO2/g, attributed to the formation of the CaMg(Si2O6) phase and the resulting increase in basic active sites. TPD-CO2 analysis confirmed that MgO/Tg exhibited the highest basicity of the modified samples, further validating its potential for CO2 capture applications.
adsorption capacity , carbon dioxide , CO2 capture , natural zeolites , sorbents
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Center of Physical Chemical Methods of Research and Analysis, Al-Farabi Kazakh National University, Tole Bi str. 96A, Almaty, 050012, Kazakhstan
The Laboratory of Catalytic Processes, Institute of Combustion Problems, Bogenbay Batyr Str. 172, Almaty, 050012, Kazakhstan
Center of Physical Chemical Methods of Research and Analysis
The Laboratory of Catalytic Processes
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