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Pd–In intermetallic nanoparticles with high catalytic selectivity for liquid-phase semi-hydrogenation of diphenylacetylene

Chen, Si 1; Huang, Xiaohui 2; Schild, Dieter ORCID iD icon 3; Wang, Di ORCID iD icon 2,4; Kübel, Christian ORCID iD icon 2,4; Behrens, Silke 1
1 Institut für Katalyseforschung und -technologie (IKFT), Karlsruher Institut für Technologie (KIT)
2 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
3 Institut für Nukleare Entsorgung (INE), Karlsruher Institut für Technologie (KIT)
4 Karlsruhe Nano Micro Facility (KNMF), Karlsruher Institut für Technologie (KIT)


Intermetallic nanoparticles (NPs) are highly interesting materials in catalysis due to their geometrically ordered structures and altered electronic properties, but the synthesis of defined intermetallic NPs remains a challenge. Here, we report a novel and facile approach for the synthesis of intermetallic Pd–In NPs in ionic liquids (ILs) at moderate temperatures. Depending on the molar ratio of the metal precursors and the reaction temperature, single-phase Pd$_3$In, PdIn and Pd$_3$In$_7$ NPs were obtained, which was confirmed, e.g. by powder X-ray diffraction, electron microscopy, and optical emission spectroscopy with inductively coupled plasma. The Pd–In NPs stabilized in ILs were used as catalysts in the liquid-phase semi-hydrogenation of diphenylacetylene (DPA). Highly ordered PdIn NPs with a CsCl type structure revealed both high activity and selectivity to cis-stilbene even at full DPA conversion. Intermetallic compounds such as PdIn can be used to isolate contiguous Pd atoms with another base metal into single Pd sites, thereby increasing the catalytic selectivity of Pd while stabilizing the individual sites in the intermetallic structures. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000153696
Veröffentlicht am 12.12.2022
DOI: 10.1039/D2NR03674F
Zitationen: 4
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Institut für Nanotechnologie (INT)
Institut für Nukleare Entsorgung (INE)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 08.12.2022
Sprache Englisch
Identifikator ISSN: 2040-3364, 2040-3372
KITopen-ID: 1000153696
HGF-Programm 38.03.02 (POF IV, LK 01) Power-based Fuels and Chemicals
Weitere HGF-Programme 32.11.03 (POF IV, LK 01) Fundamental Scientific Aspects
43.35.03 (POF IV, LK 01) Structural and Functional Behavior of Solid State Systems
Erschienen in Nanoscale
Verlag Royal Society of Chemistry (RSC)
Band 14
Heft 47
Seiten 17661–17669
Projektinformation SFB 1441/1; TrackAct (DFG, DFG KOORD, SFB 1441/1)
Vorab online veröffentlicht am 23.11.2022
Schlagwörter 2018-020-022709 TEM
Nachgewiesen in Web of Science
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