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Title: Organometallic Synthesis of Bimetallic Cobalt‐Rhodium Nanoparticles in Supported Ionic Liquid Phases (Co x Rh 100− x @SILP) as Catalysts for the Selective Hydrogenation of Multifunctional Aromatic Substrates

Abstract

Abstract The synthesis, characterization, and catalytic properties of bimetallic cobalt‐rhodium nanoparticles of defined Co:Rh ratios immobilized in an imidazolium‐based supported ionic liquid phase (Co x Rh 100− x @SILP) are described. Following an organometallic approach, precise control of the Co:Rh ratios is accomplished. Electron microscopy and X‐ray absorption spectroscopy confirm the formation of small, well‐dispersed, and homogeneously alloyed zero‐valent bimetallic nanoparticles in all investigated materials. Benzylideneacetone and various bicyclic heteroaromatics are used as chemical probes to investigate the hydrogenation performances of the Co x Rh 100− x @SILP materials. The Co:Rh ratio of the nanoparticles is found to have a critical influence on observed activity and selectivity, with clear synergistic effects arising from the combination of the noble metal and its 3d congener. In particular, the ability of Co x Rh 100− x @SILP catalysts to hydrogenate 6‐membered aromatic rings is found to experience a remarkable sharp switch in a narrow composition range between Co 25 Rh 75 (full ring hydrogenation) and Co 30 Rh 70 (no ring hydrogenation).

Authors:
 [1];  [2];  [2];  [3];  [4];  [2];  [3]; ORCiD logo [2]; ORCiD logo [1]
  1. Max Planck Institute for Chemical Energy Conversion Stiftstrasse 34–36 Mülheim an der Ruhr 45470 Germany, Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringerweg 2 Aachen 52074 Germany
  2. Max Planck Institute for Chemical Energy Conversion Stiftstrasse 34–36 Mülheim an der Ruhr 45470 Germany
  3. Laboratoire de Physique et Chimie des Nano‐Objets Université de Toulouse INSA UPS LPCNO CNRS‐UMR5215 135 Avenue de Rangueil Toulouse 31077 France
  4. Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringerweg 2 Aachen 52074 Germany
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1737726
Alternate Identifier(s):
OSTI ID: 1786580
Resource Type:
Published Article
Journal Name:
Small
Additional Journal Information:
Journal Name: Small Journal Volume: 17 Journal Issue: 5; Journal ID: ISSN 1613-6810
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English

Citation Formats

Rengshausen, Simon, Van Stappen, Casey, Levin, Natalia, Tricard, Simon, Luska, Kylie L., DeBeer, Serena, Chaudret, Bruno, Bordet, Alexis, and Leitner, Walter. Organometallic Synthesis of Bimetallic Cobalt‐Rhodium Nanoparticles in Supported Ionic Liquid Phases (Co x Rh 100− x @SILP) as Catalysts for the Selective Hydrogenation of Multifunctional Aromatic Substrates. Germany: N. p., 2020. Web. doi:10.1002/smll.202006683.
Rengshausen, Simon, Van Stappen, Casey, Levin, Natalia, Tricard, Simon, Luska, Kylie L., DeBeer, Serena, Chaudret, Bruno, Bordet, Alexis, & Leitner, Walter. Organometallic Synthesis of Bimetallic Cobalt‐Rhodium Nanoparticles in Supported Ionic Liquid Phases (Co x Rh 100− x @SILP) as Catalysts for the Selective Hydrogenation of Multifunctional Aromatic Substrates. Germany. https://doi.org/10.1002/smll.202006683
Rengshausen, Simon, Van Stappen, Casey, Levin, Natalia, Tricard, Simon, Luska, Kylie L., DeBeer, Serena, Chaudret, Bruno, Bordet, Alexis, and Leitner, Walter. Mon . "Organometallic Synthesis of Bimetallic Cobalt‐Rhodium Nanoparticles in Supported Ionic Liquid Phases (Co x Rh 100− x @SILP) as Catalysts for the Selective Hydrogenation of Multifunctional Aromatic Substrates". Germany. https://doi.org/10.1002/smll.202006683.
@article{osti_1737726,
title = {Organometallic Synthesis of Bimetallic Cobalt‐Rhodium Nanoparticles in Supported Ionic Liquid Phases (Co x Rh 100− x @SILP) as Catalysts for the Selective Hydrogenation of Multifunctional Aromatic Substrates},
author = {Rengshausen, Simon and Van Stappen, Casey and Levin, Natalia and Tricard, Simon and Luska, Kylie L. and DeBeer, Serena and Chaudret, Bruno and Bordet, Alexis and Leitner, Walter},
abstractNote = {Abstract The synthesis, characterization, and catalytic properties of bimetallic cobalt‐rhodium nanoparticles of defined Co:Rh ratios immobilized in an imidazolium‐based supported ionic liquid phase (Co x Rh 100− x @SILP) are described. Following an organometallic approach, precise control of the Co:Rh ratios is accomplished. Electron microscopy and X‐ray absorption spectroscopy confirm the formation of small, well‐dispersed, and homogeneously alloyed zero‐valent bimetallic nanoparticles in all investigated materials. Benzylideneacetone and various bicyclic heteroaromatics are used as chemical probes to investigate the hydrogenation performances of the Co x Rh 100− x @SILP materials. The Co:Rh ratio of the nanoparticles is found to have a critical influence on observed activity and selectivity, with clear synergistic effects arising from the combination of the noble metal and its 3d congener. In particular, the ability of Co x Rh 100− x @SILP catalysts to hydrogenate 6‐membered aromatic rings is found to experience a remarkable sharp switch in a narrow composition range between Co 25 Rh 75 (full ring hydrogenation) and Co 30 Rh 70 (no ring hydrogenation).},
doi = {10.1002/smll.202006683},
journal = {Small},
number = 5,
volume = 17,
place = {Germany},
year = {Mon Dec 21 00:00:00 EST 2020},
month = {Mon Dec 21 00:00:00 EST 2020}
}

Journal Article:
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https://doi.org/10.1002/smll.202006683

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