Abstract: The present work is focused on a strategy to regulate the properties of monometallic Pd and bimetallic PdCu catalysts for selective 5-hydroxymethylfurfural (HMF) reduction via the interaction with the functional groups of the NH2-modified Zr-based metal-organic frameworks (Zr-MOFs). xPd100-xCu/UiO-66-NH2-X catalysts with different fractions of amino terephthalate linkers as well as Pd and Cu metals (x and 100-x, respectively) in bimetallic composition are prepared with impregnation reduction technique. The obtained samples are studied using a complex of methods, including XRD, low-temperature nitrogen adsorption, IR spectroscopy, and CO pulsed chemisorption. The effect of NH2 groups on the adsorption properties of the Zr-MOFs towards Pd and Cu precursors and on Pd and PdCu species formation in xPd100-xCu/UiO-66-NH2-X catalysts is considered. The formation of active particles at various stages of catalyst formation is studied in detail. 50 % fraction of NH2 linkers is found optimal for the formation of active and selective mono- and bimetallic CuPd catalysts, while 100 % fraction significantly reduces the activity of the samples due to the strong interaction of active Pd species with the support and does not allow the formation of bimetallic catalysts.

Cite: Morilov D.P. , Timofeev K.L. , Golubovskaya A.G. , Stonkus O.A. , Kharlamova T.S.
xPd100-xCu/UiO-66-NH2 Catalysts for Selective 5-Hydroxymethylfurfural Reduction
Microporous and Mesoporous Materials. 2025. V.384. 113432 :1-14. DOI: 10.1016/j.micromeso.2024.113432 WOS Scopus OpenAlex

Dates:

Submitted:	Aug 30, 2024
Accepted:	Nov 21, 2024
Published online:	Nov 22, 2024
Published print:	Feb 15, 2025

Identifiers:

Web of science:	WOS:001366619300001
Scopus:	2-s2.0-85209934740
OpenAlex:	W4404634715

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