Seed-mediated synthesis of bimetallic ruthenium-platinum nanoparticles efficient in cinnamaldehyde selective hydrogenation

Core-shell RuPt (Ru core-Pt shell) and PtRu (Pt core-Ru shell) nanoparticles were prepared by decomposing in a two-step procedure a ruthenium ([Ru(COD)(COT)] (COD = 1,5-cyclooctadiene, COT = 1,3,5-cyclooctatriene)) and a platinum complex ([Pt2(dba)3] (dba = dibenzylideneacetone) or [Pt(CH3)2(COD)])...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2014-06, Vol.43 (24), p.9283-9295
Main Authors: Qi, Xueqiang, Axet, M Rosa, Philippot, Karine, Lecante, Pierre, Serp, Philippe
Format: Article
Language:English
Subjects:
Bimetals
Catalysis
Catalysts
Chemical Sciences
Hydrogenation
Material chemistry
Nanoparticles
Physics
Platinum
Selectivity
Shells
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Summary:Core-shell RuPt (Ru core-Pt shell) and PtRu (Pt core-Ru shell) nanoparticles were prepared by decomposing in a two-step procedure a ruthenium ([Ru(COD)(COT)] (COD = 1,5-cyclooctadiene, COT = 1,3,5-cyclooctatriene)) and a platinum complex ([Pt2(dba)3] (dba = dibenzylideneacetone) or [Pt(CH3)2(COD)]) in the presence of 4-(3-phenylpropyl)pyridine (PPP) as a stabilizer and using different Ru/Pt ratios. The data obtained from a combination of several analyses (TEM, HRTEM, WAXS and IR) indicate that the so-obtained nanoparticles present a core-shell structure. The catalytic performances of these bimetallic nanoparticles for the selective hydrogenation of trans-cinnamaldehyde were investigated, which provided interesting results as well as useful information to elucidate their structure and composition. Indeed, the catalytic results evidence that: (1) the combination of both metals led in some cases to a synergistic effect on the selectivity of the reaction, and (2) the structure and the composition affected the selectivity of the reaction.
ISSN:1477-9226
1477-9234
DOI:10.1039/c3dt53539h