1 November 2025
Yordanova, I., Todorova, S., Tenchev, K., Encheva, E., Kolev, H., Naydenov, A..
(
Илияна Христова;
Красимир Тенчев;
Силвия Тодорова;
Христо Колев;
)
Abstract
Bulgarian natural zeolite Clinoptilolite was used for catalyst carrier. To improve carrier properties modification by nitric acid and ion exchange through ammonium nitrate was performed. Catalytic active phase of cobalt and manganese was applied by wet impregnation method. Synthesised Co or Mn catalysts were characterized by means of AES-ICP, XRD, low-temperature N2 adsorption, TPR, XPS, and HRTEM. The zeolite catalysts were tested in the reaction of total oxidation of n-hexane. All samples demonstrated good catalytic activity. Samples with low amount of the active phase (10?%) manifested a higher catalytic activity. This is due to uniform distribution of the active phase on the carrier surface, diminished crystallite size, and readily reducible Co oxide and Mn oxide phases.
Catalysis Today, 459, ELSEVIER, 2025, ISSN:0920-5861, DOI:https://doi.org/10.1016/j.cattod.2025.115437, 115437. SJR (Scopus):1.05, JCR-IF (Web of Science):5.3 Q1, не оглавява ранглистата
https://www.sciencedirect.com/science/article/pii/S092058612500255X
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