Ochirkhuyag, A.; Rentsennorov, U.; Batmunkh, D.; Gendenjamts, O.-E.; Odbaatar, E.; Tsend-Ayush, T.; Temuujin, J. Preparation of Catalyst from Natural Montmorillonite Mineral and Its Application in the Synthesis of Carbon Nanosphere. Mong. J. Chem. 2022, 23, 32-37.