am0c01987_si_001.pdf (293.78 kB)
Synthesis of Intermetallic Pt-Based Catalysts by Lithium Naphthalenide-Driven Reduction for Selective Hydrogenation of Cinnamaldehyde
journal contribution
posted on 2020-04-09, 12:03 authored by Xiao Chen, He Cao, Xiaozhen Chen, Yan Du, Ji Qi, Jingjie Luo, Marc Armbrüster, Changhai LiangIntermetallic nanoparticles
(NPs) with a well-defined atom binding
environment and a long-range ordering structure can be used as ideal
models to understand their physical and catalytic properties. In this
work, several kinds of nanostructured and carbon nanotube (CNT)-supported
Pt-based intermetallic compounds (IMCs) have been synthesized by one-step
lithium naphthalenide-driven reduction at room temperature without
the use of surfactants in light of the reduction potential of metals.
In the chemoselective hydrogenation of cinnamaldehyde, the second
metal in Pt-M IMCs significantly creates a suitable reaction environment
through construction of a good geometric and electronic structure.
The Pt3Sn/CNT catalyst presents highly efficient and good
chemoselective hydrogenation of cinnamaldehyde to cinnamyl alcohol.
This can be attributed to the fact that the incorporated Sn atoms
effectively dilute large Pt ensembles and increase the electron density
of Pt. The in situ-formed SnOx interfaces
as Lewis acid sites facilitate the coordination of CO bonds,
enhancing the selectivity to cinnamyl alcohol. In addition, the SnOx interface as the joint between Pt3Sn IMCs NPs and CNTs significantly improves the stability of the
catalyst in the reaction environment.
History
Usage metrics
Categories
Keywords
Pt 3 Sn IMCs NPsCinnamaldehyde Intermetallic nanoparticlescinnamaldehydelithium naphthalenide-driven reductionLewis acid siteschemoselective hydrogenationatom binding environmentsitu-formed SnO x interfacesSnO x interfacereaction environmentcinnamyl alcoholcatalystCNTIntermetallic Pt-Based CatalystsLithium Naphthalenide-Driven Reduction
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC