1 януари 2022
Todorova, S., Naydenov, A., Velinova, R., Kolev, H., Larin, A., Karashanova, D..
(
Силвия Тодорова;
Христо Колев;
)
Abstract
New data on the catalytic combustion of methane on Ni modified Pd/Al2O3 catalysts were obtained. NiAl2O4 spinel phase, not well definite Ni-Al phases, reducible at lower temperatures as well as finely dispersed NiO are formed on the surface after Ni deposition. When Pd is loaded on alumina modified with up to 5% Ni, the finely divided not well stabilized PdO particles are formed. PdO strongly interacting with surface is formed in Pd + 10% Ni/Al2O3. All three oxidation states Pd0, Pd2+ and Pd4+ are registered on the surface of the studied catalysts. The observed close catalytic activity of all nickel-modified catalysts is explained by the similar surface palladium concentration, which indicates that increasing the nickel content does not lead to a significant improvement in catalytic activity.
Materials Today: Proceedings, 61, 4, Elsevier Ltd, 2022, ISSN:2214-7853, DOI:10.1016/j.matpr.2022.01.267, 1212-1216. SJR (Scopus):0.36 SJR, непопадащ в Q категория (Scopus)
https://www.sciencedirect.com/science/article/pii/S2214785322002978
Назад...
