Ruthenium Nanoparticles Stabilized with Methoxy-Functionalized Ionic Liquids: Synthesis and Structure–Performance Relations in Styrene Hydrogenation

Deepthy Krishnan; Leonhard Schill; M. Rosa Axet; Karine Philippot; Anders Riisager

doi:10.3390/nano13091459

Ruthenium Nanoparticles Stabilized with Methoxy-Functionalized Ionic Liquids: Synthesis and Structure–Performance Relations in Styrene Hydrogenation

Deepthy Krishnan, Leonhard Schill, M. Rosa Axet, Karine Philippot^*, Anders Riisager^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

A series of ruthenium nanoparticles (RuNPs) were synthesized by the organometallic approach in different functionalized imidazolium ionic liquids (FILs). Transmission electron microscopy (TEM) showed well-dispersed and narrow-sized RuNPs ranging from 1.3 to 2.2 nm, depending on the IL functionalization. Thermal gravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) allowed the interaction between the RuNPs and the ILs to be studied. The RuNPs stabilized by methoxy-based FILs (MEM and MME) displayed a good balance between catalytic activity and stability when evaluated in the hydrogenation of styrene (S) under mild reaction conditions. Moreover, the catalysts showed total selectivity towards ethylbenzene (EB) under milder reaction conditions (5 bar, 30 °C) than reported in the literature for other RuNP catalysts.

Original language	English
Article number	1459
Journal	Nanomaterials
Volume	13
Issue number	9
Number of pages	15
ISSN	2079-4991
DOIs	https://doi.org/10.3390/nano13091459
Publication status	Published - 2023

Keywords

Catalysis
Functionalized ionic liquid
Hydrogenation
Metal nanoparticle
Ruthenium
Styrene

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title = "Ruthenium Nanoparticles Stabilized with Methoxy-Functionalized Ionic Liquids: Synthesis and Structure–Performance Relations in Styrene Hydrogenation",

abstract = "A series of ruthenium nanoparticles (RuNPs) were synthesized by the organometallic approach in different functionalized imidazolium ionic liquids (FILs). Transmission electron microscopy (TEM) showed well-dispersed and narrow-sized RuNPs ranging from 1.3 to 2.2 nm, depending on the IL functionalization. Thermal gravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) allowed the interaction between the RuNPs and the ILs to be studied. The RuNPs stabilized by methoxy-based FILs (MEM and MME) displayed a good balance between catalytic activity and stability when evaluated in the hydrogenation of styrene (S) under mild reaction conditions. Moreover, the catalysts showed total selectivity towards ethylbenzene (EB) under milder reaction conditions (5 bar, 30 °C) than reported in the literature for other RuNP catalysts.",

keywords = "Catalysis, Functionalized ionic liquid, Hydrogenation, Metal nanoparticle, Ruthenium, Styrene",

author = "Deepthy Krishnan and Leonhard Schill and Axet, {M. Rosa} and Karine Philippot and Anders Riisager",

note = "Publisher Copyright: {\textcopyright} 2023 by the authors.",

year = "2023",

doi = "10.3390/nano13091459",

language = "English",

volume = "13",

journal = "Nanomaterials",

issn = "2079-4991",

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T1 - Ruthenium Nanoparticles Stabilized with Methoxy-Functionalized Ionic Liquids

T2 - Synthesis and Structure–Performance Relations in Styrene Hydrogenation

AU - Krishnan, Deepthy

AU - Schill, Leonhard

AU - Axet, M. Rosa

AU - Philippot, Karine

AU - Riisager, Anders

PY - 2023

Y1 - 2023

N2 - A series of ruthenium nanoparticles (RuNPs) were synthesized by the organometallic approach in different functionalized imidazolium ionic liquids (FILs). Transmission electron microscopy (TEM) showed well-dispersed and narrow-sized RuNPs ranging from 1.3 to 2.2 nm, depending on the IL functionalization. Thermal gravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) allowed the interaction between the RuNPs and the ILs to be studied. The RuNPs stabilized by methoxy-based FILs (MEM and MME) displayed a good balance between catalytic activity and stability when evaluated in the hydrogenation of styrene (S) under mild reaction conditions. Moreover, the catalysts showed total selectivity towards ethylbenzene (EB) under milder reaction conditions (5 bar, 30 °C) than reported in the literature for other RuNP catalysts.

AB - A series of ruthenium nanoparticles (RuNPs) were synthesized by the organometallic approach in different functionalized imidazolium ionic liquids (FILs). Transmission electron microscopy (TEM) showed well-dispersed and narrow-sized RuNPs ranging from 1.3 to 2.2 nm, depending on the IL functionalization. Thermal gravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) allowed the interaction between the RuNPs and the ILs to be studied. The RuNPs stabilized by methoxy-based FILs (MEM and MME) displayed a good balance between catalytic activity and stability when evaluated in the hydrogenation of styrene (S) under mild reaction conditions. Moreover, the catalysts showed total selectivity towards ethylbenzene (EB) under milder reaction conditions (5 bar, 30 °C) than reported in the literature for other RuNP catalysts.

KW - Catalysis

KW - Functionalized ionic liquid

KW - Hydrogenation

KW - Metal nanoparticle

KW - Ruthenium

KW - Styrene

U2 - 10.3390/nano13091459

DO - 10.3390/nano13091459

M3 - Journal article

C2 - 37177006

AN - SCOPUS:85159235180

SN - 2079-4991

VL - 13

JO - Nanomaterials

JF - Nanomaterials

IS - 9

M1 - 1459

ER -

Ruthenium Nanoparticles Stabilized with Methoxy-Functionalized Ionic Liquids: Synthesis and Structure–Performance Relations in Styrene Hydrogenation

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Keywords

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