scholarly journals Synthesis of Metal Nanoparticles and Metal Fluoride Nanoparticles from Metal Amidinate Precursors in 1-Butyl-3-Methylimidazolium Ionic Liquids and Propylene Carbonate

ChemistryOpen ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 137-148 ◽  
Author(s):  
Kai Schütte ◽  
Juri Barthel ◽  
Manuel Endres ◽  
Marvin Siebels ◽  
Bernd M. Smarsly ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Metal Nanoparticles ◽  
Propylene Carbonate ◽  
Metal Fluoride ◽  
Fluoride Nanoparticles

scholarly journals Synthesis of rare-earth metal and rare-earth metal-fluoride nanoparticles in ionic liquids and propylene carbonate

2018 ◽  
Vol 9 ◽  
pp. 1881-1894 ◽  
Author(s):  
Marvin Siebels ◽  
Lukas Mai ◽  
Laura Schmolke ◽  
Kai Schütte ◽  
Juri Barthel ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ionic Liquids ◽  
Rare Earth ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Metal Fluoride ◽  
X Ray ◽  
Transmission Electron ◽  
Fluoride Nanoparticles

Decomposition of rare-earth tris(N,N′-diisopropyl-2-methylamidinato)metal(III) complexes [RE{MeC(N(iPr)2)}3] (RE(amd)3; RE = Pr(III), Gd(III), Er(III)) and tris(2,2,6,6-tetramethyl-3,5-heptanedionato)europium(III) (Eu(dpm)3) induced by microwave heating in the ionic liquids (ILs) 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIm][BF4]), 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIm][NTf2]) and in propylene carbonate (PC) yield oxide-free rare-earth metal nanoparticles (RE-NPs) in [BMIm][NTf2] and PC for RE = Pr, Gd and Er or rare-earth metal-fluoride nanoparticles (REF3-NPs) in the fluoride-donating IL [BMIm][BF4] for RE = Pr, Eu, Gd and Er. The crystalline phases and the absence of significant oxide impurities in RE-NPs and REF3-NPs were verified by powder X-ray diffraction (PXRD), selected area electron diffraction (SAED) and high-resolution X-ray photoelectron spectroscopy (XPS). The size distributions of the nanoparticles were determined by transmission electron microscopy (TEM) and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) to an average diameter of (11 ± 6) to (38 ± 17) nm for the REF3-NPs from [BMIm][BF4]. The RE-NPs from [BMIm][NTf2] or PC showed diameters of (1.5 ± 0.5) to (5 ± 1) nm. The characterization was completed by energy-dispersive X-ray spectroscopy (EDX).

Surface Active Ionic Liquids as Catalyst for CO2 Conversion to Propylene Carbonate

2017 ◽  
Vol 148 (1) ◽  
pp. 108-118 ◽  
Author(s):  
Michele O. Vieira ◽  
Wesley F. Monteiro ◽  
Bruna S. Neto ◽  
Rosane Ligabue ◽  
Vitaly V. Chaban ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Propylene Carbonate ◽  
Co2 Conversion ◽  
Surface Active

scholarly journals Optimization of transition metal nanoparticle-phosphonium ionic liquid composite catalytic systems for deep hydrogenation and hydrodeoxygenation reactions

2015 ◽  
Vol 17 (3) ◽  
pp. 1597-1604 ◽  
Author(s):  
Abhinandan Banerjee ◽  
Robert W. J. Scott
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Transition Metal ◽  
Metal Nanoparticles ◽  
Metal Nanoparticle ◽  
Catalytic Systems ◽  
Phosphonium Ionic Liquid

Stable metal nanoparticles in tetraalkylphosphonium ionic liquids can catalyze hydrogenations, as well as phenol hydrodeoxygenation, owing to presence of adventitious borates.

Tetracarboxyl-Functionalized Ionic Liquid: Synthesis and Catalytic Properties

2015 ◽  
Vol 68 (10) ◽  
pp. 1513 ◽  
Author(s):  
Miaona Feng ◽  
Guoying Zhao ◽  
Hongling Gao ◽  
Suojiang Zhang
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Propionic Acid ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
High Stability ◽  
Ammonium Acetate ◽  
Catalytic Properties ◽  
Potential Applications

Novel tetracarboxyl-functionalized 2,2′-biimidazolium-based ionic liquids (ILs) with different anions were synthesized in two steps from readily available and sustainable starting materials including ammonium acetate, glyoxal, and halogenated propionic acid. The functionalized IL exhibited higher catalytic activity towards the cycloaddition of CO2 to terminal epoxides. With propylene oxide as a substrate, the optimum yield of propylene carbonate reached 82.7 % at an initial CO2 pressure of 2.0 MPa for 4 h at 140°C. Moreover, the functionalized IL catalyst displayed a high stability and can be reused for at least five cycles without obvious loss of catalytic activity. The results provide a simple and economical way to synthesize multi-functionalized imidazolium-based ILs with versatile potential applications.

Arene Hydrogenation by Metal Nanoparticles in Ionic Liquids

ChemCatChem ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 333-341 ◽  
Author(s):  
Gustavo Chacón ◽  
Jairton Dupont
Keyword(s):  
Ionic Liquids ◽  
Metal Nanoparticles ◽  
Arene Hydrogenation

What Are the Mechanisms Controlling the Size of Metal Nanoparticles Precipitated in Ionic Liquids?

2020 ◽  
Vol MA2020-01 (18) ◽  
pp. 1141-1141
Author(s):  
Walid Darwich ◽  
Philippe Arquillière ◽  
Paul-Henri Haumesser ◽  
Suzanne Giorgio ◽  
Catherine C. Santini
Keyword(s):  
Ionic Liquids ◽  
Metal Nanoparticles
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