Ruthenium Nanoparticles Stabilized with Methoxy-Functionalized Ionic Liquids: Synthesis and Structure-Performance Relations in Styrene Hydrogenation.
Deepthy KrishnanLeonhard SchillM Rosa AxetKarine PhilippotAnders RiisagerPublished in: Nanomaterials (Basel, Switzerland) (2023)
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.
Keyphrases
- ionic liquid
- electron microscopy
- highly efficient
- high resolution
- room temperature
- quantum dots
- systematic review
- transition metal
- molecularly imprinted
- metal organic framework
- solid state
- photodynamic therapy
- walled carbon nanotubes
- computed tomography
- magnetic resonance imaging
- mass spectrometry
- simultaneous determination
- dual energy
- magnetic resonance