Titania supported synergistic palladium single atoms and nanoparticles for room temperature ketone and aldehydes hydrogenation.

Abstract:

:Selective reduction of ketone/aldehydes to alcohols is of great importance in green chemistry and chemical engineering. Highly efficient catalysts are still demanded to work under mild conditions, especially at room temperature. Here we present a synergistic function of single-atom palladium (Pd1) and nanoparticles (PdNPs) on TiO2 for highly efficient ketone/aldehydes hydrogenation to alcohols at room temperature. Compared to simple but inferior Pd1/TiO2 and PdNPs/TiO2 catalysts, more than twice activity enhancement is achieved with the Pd1+NPs/TiO2 catalyst that integrates both Pd1 and Pd NPs on mesoporous TiO2 supports, obtained by a simple but large-scaled spray pyrolysis route. The synergistic function of Pd1 and PdNPs is assigned so that the partial Pd1 dispersion contributes enough sites for the activation of C=O group while PdNPs site boosts the dissociation of H2 molecules to H atoms. This work not only contributes a superior catalyst for ketone/aldehydes hydrogenation, but also deepens the knowledge on their hydrogenation mechanism and guides people to engineer the catalytic behaviors as needed.

journal_name

Nat Commun

journal_title

Nature communications

authors

Kuai L,Chen Z,Liu S,Kan E,Yu N,Ren Y,Fang C,Li X,Li Y,Geng B

doi

10.1038/s41467-019-13941-5

subject

Has Abstract

pub_date

2020-01-07 00:00:00

pages

48

issue

1

issn

2041-1723

pii

10.1038/s41467-019-13941-5

journal_volume

11

pub_type

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