Palladium-Mediated Ethylation of the Imidazolium Cation Monitored In Operando on a Solid Catalyst with Ionic Liquid Layer

ChemCatChem ◽  
2016 ◽  
Vol 9 (1) ◽  
pp. 109-113 ◽  
Author(s):  
Tanja Bauer ◽  
Veit Hager ◽  
Marc B. Williams ◽  
Mathias Laurin ◽  
Tibor Döpper ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Layer ◽  
Solid Catalyst ◽  
Imidazolium Cation ◽  
In Operando

Dynamic CO Adsorption and Desorption through the Ionic Liquid Layer of a Pt Model Solid Catalyst with Ionic Liquid Layers

2019 ◽  
Vol 123 (51) ◽  
pp. 31057-31072 ◽  
Author(s):  
Christian Schuschke ◽  
Chantal Hohner ◽  
Corinna Stumm ◽  
Miroslav Kettner ◽  
Lukas Fromm ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Layer ◽  
Co Adsorption ◽  
Solid Catalyst ◽  
Adsorption And Desorption

scholarly journals N-Hydroxyphthalimide on a Polystyrene Support Coated with Co(II)-Containing Ionic Liquid as a New Catalytic System for Solvent-Free Ethylbenzene Oxidation

Catalysts ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1367
Author(s):  
Gabriela Talik ◽  
Anna Osial ◽  
Mirosława Grymel ◽  
Beata Orlińska
Keyword(s):  
Ionic Liquid ◽  
Liquid Phase ◽  
Catalytic System ◽  
Liquid Layer ◽  
Catalyst Support ◽  
Solid Catalyst ◽  
Ethylbenzene Oxidation ◽  
Supported Ionic Liquid ◽  
Polystyrene Support ◽  
Oxidation Of Ethylbenzene

The oxidation of ethylbenzene using dioxygen was carried out applying a new catalytic system—heterogeneous N-hydroxyphthalimide (PS-NHPI) coated with an ionic liquid containing CoCl2. The catalytic system represents a combination of solid catalyst with ionic liquid layer (SCILL) and supported ionic liquid phase (SILP) techniques, wherein the resulting system utilizes CoCl2 dissolved in the 1-ethyl-3-methylimidazolium octyl sulphate ([emim)][OcOSO3]) ionic liquid phase that is layered onto the solid catalyst support. PS-NHPI was obtained by immobilizing N-hydroxyphthalimide on chloromethyl polystyrene resins by ester bonds. It was observed that novel SCILL/SILP systems significantly improved the selectivity toward acetophenone. We also demonstrate that these systems can be separated from the reaction mixture and recycled without appreciably reducing its activity and selectivity.

Synthesis, Characterization and Application of N,N-Dimethyl-N-Sulfoethan Ammonium tetra-Chloro Aluminate: A Novel micro-Heterogeneous Cata-lyst for Synthesis of tri-Arylmethanes

2020 ◽  
Vol 17 ◽  
Author(s):  
Saeid Azimi ◽  
Niloofar Mohamadighader
Keyword(s):  
Ionic Liquid ◽  
Heterogeneous Catalyst ◽  
Mass Spectroscopy ◽  
Aromatic Aldehydes ◽  
Solid Catalyst ◽  
Sem Images ◽  
One Pot ◽  
Acidic Catalyst ◽  
Eds Analysis ◽  
Ft Ir

Abstract: A new solid catalyst was synthesized from an ionic liquid and heterogenised by changing anion reaction. The new heterogeneous acidic catalyst was characterized by SEM images, EDS analysis, AFM images, Ft-IR, HNMR, 13CNMR and Mass Spectroscopy. It was applied to synthesis of tri-arylmethanes throughout one-pot tri-component reactions among aromatic aldehydes, N,N-dimethylaniline and other carbonic nucleophiles such as anisole and indole. Hence, synthesis of convenient and inexpensive micro-heterogeneous catalyst was introduced, the efficiency of which was confirmed. Also, various useful products were synthesized throughout this simple and clean procedure.

scholarly journals Time-Resolved Characterization of Dynamic Tribochemical Processes for Dicationic Imidazolium Ionic Liquid

2017 ◽  
Author(s):  
Roman Nevshupa ◽  
Marcello Conte ◽  
Silvia Guerra ◽  
Elisa Roman
Keyword(s):  
Ionic Liquid ◽  
Imidazolium Ionic Liquid ◽  
Imidazolium Cation ◽  
Water Desorption ◽  
Time Resolved ◽  
Head Groups ◽  
Volatile Products ◽  
Tribochemical Processes ◽  
Dicationic Ionic Liquid ◽  
Poly Ethylene

Dynamic tribochemical processes for dicationic ionic liquid containing a germinal imidazolium cation head groups bridged by a poly(ethylene glycol) and bis(trifluoromethylsulfonyl)imide anion were studied using time-resolved Mechanically Stimulated Gas Emission Mass-Spectrometry (MSGE-MS). In comparison with similar monocationic imidazolium ionic liquids with short alkylic or long polyether side chains the dicationic ionic liquid had lower coefficient of friction on Ti6Al4V alloy and smoother behaviour. The analysis of volatile decomposition products suggested multiple tribochemical reactions in which both anionic and cationic moieties are involved. Tribochemical degradation of cations was mainly through detachment of the side and bridging chains from the imidazolium head groups. Absence of volatile products containing nitrogen implies that imidazole group remained unchanged. Hydrogen and water desorption were attributed to the reactions of hydrogen fluoride being a product of anion degradation with titanium and titanium oxide.

Solid Catalysts with Ionic Liquid Layer (SCILL)

2014 ◽  
pp. 279-306 ◽  
Author(s):  
Wolfgang Korth ◽  
Andreas Jess
Keyword(s):  
Ionic Liquid ◽  
Liquid Layer ◽  
Solid Catalysts
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