Journal
JOURNAL OF CATALYSIS
Volume 392, Issue -, Pages 108-118Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2020.09.021
Keywords
Palladium catalysts; Layered double hydroxides; Palladium(II) chloride complexes; Palladium particles size and morphology; Aqueous-phase furfural hydrogenation
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Funding
- Ministry of Science and Higher Education of the Russian Federation
- State Program of Boreskov Institute of Catalysis [AAAA-A17-117021450095-1]
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Pd(II) chloride complexes were anchored using magnesium-aluminum layered double hydroxides (LDHs) with interlayer anions (CO32- and OH-), which possess different exchange properties, and MgAl mixed oxide during its rehydration. It was shown that the catalysts of the same chemical composition with different size, morphology and electronic state of supported palladium particles can be synthesized by varying the localization of Pd precursor. The properties of Pd/MgAlOx catalysts were studied in aqueousphase hydrogenation of furfural. Anchoring of the Pd precursor in the interlayer space of LDHs is accompanied by the formation of non-isometric agglomerated palladium particles which contain less oxidized metal and show a higher activity toward hydrogenation of furfural. Magnesium-aluminum oxides in Pd/MgAlOx catalysts are rehydrated in the aqueous-phase reaction to yield the activated MgAl-LDH species as a support, which promotes the furfural conversion via hydrogenation of the furan cycle. (C) 2020 Elsevier Inc. All rights reserved.
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