Abstract: Single phase CuCoMgAl-layered hydroxides were obtained by making fine adjustment to their composition through changing the (Co + Cu)/Mg = 0.5; 1; 2; 3 and Co/Cu = 0.5; 1; 2 ratios. The rise of Co/Cu in systems contributed to the increase in their thermal stability. CuCoMgAl-catalysts showed high selectivity of carbonyl group hydrogenation in furfural and 5-hydroxymethylfurfural. In furfural hydrogenation, the selectivity to furfuryl alcohol was more than 99%, and in 5-hydroxymethylfurfural hydrogenation, the selectivity to 2,5-hydroxymethyl furfural was 95%. The surface of the samples with different Co/Cu after calcination and reduction was the same and had a «core-shell» structure (TEM). «Core» consisted of Cu and Co metallic particles. «Shell» consisted of CuCoMgAlOx mixed no-stoichiometric spinel oxides. There was no sintering or change in size of the metallic particles after the reaction. For the sample with Co/Cu = 1, their phase composition after reaction remained unchangeable. The increase of Co/Cu led to the formation of an X-ray amorphous phase after the reaction. This suggests the decrease in structural stability of this sample. The obtained results prove the prospects of using bimetallic CoCu-systems for hydrogenation of furan aldehydes, and opens up new directions for further research and improvement.

Cite: Kobzar E.O. , Stepanova L.N. , Nepomniashchii A.A. , Vasilevich A.V. , Gulyaeva T.I. , Trenikhin M.V. , Lavrenov A.V.
CuCoMgAlOx Mixed Oxides as Selective Catalysts for the Hydrogenation of Furan Compounds
Hydrogen. 2023. V.4. N3. P.644-657. DOI: 10.3390/hydrogen4030041 WOS РИНЦ OpenAlex

Dates:

Submitted:	Jul 17, 2023
Accepted:	Sep 5, 2023
Published print:	Sep 8, 2023
Published online:	Sep 8, 2023

Identifiers:

Web of science:	WOS:001199308700001
Elibrary:	64423313
OpenAlex:	W4386547072

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