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

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

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 The Properties of Cu Ions in Zeolites CuY Studied by IR Spectroscopy

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4686
Author(s):  
Jerzy Podobiński ◽  
Mariusz Gackowski ◽  
Grzegorz Mordarski ◽  
Katarzyna Samson ◽  
Michał Śliwa ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Positive Charge ◽  
Co Adsorption ◽  
The Other ◽  
Probe Molecules ◽  
Adsorption And Desorption ◽  
Other Hand ◽  
Close Proximity ◽  
No And Co Adsorption ◽  
Cu Ions

The properties of both Cu2+ and Cu+ ions in zeolite CuY were followed with NO and CO as probe molecules. Cu2+ was found to be located in SII, SII*, and SIII sites, whereas Cu+ was found in SII and SII* sites. The fine analysis of the spectra of Cu2+-NO and Cu+-CO adducts suggests that both in SII and in SII* sites two kinds of Cu cations exist. They differ in the positive charge, which may be related to the varying numbers of AlO4− in close proximity. The experiments of NO and CO adsorption and desorption evidenced that both Cu2+ and Cu+ sites of highest positive charge bind probe molecules most strongly but activate them to a lesser extent than the Cu sites of lowest positive charge. The experiments of reduction with hydrogen evidenced that the Cu ions of higher positive charge are first reduced by hydrogen. On the other hand, Cu sites of the lowest positive charge are first oxidized by oxygen. The experiments with CuNaY zeolites of various Cu contents suggest that the first introduced Cu (at low Cu contents) created Cu+, which was the most neutralized by framework oxygens. Such Cu cations are the most stabilized by framework oxygens.

The dissimilar twins – a comparative, site-selective in situ study of CO adsorption and desorption on Pt(322) and Pt(355)

2007 ◽  
Vol 601 (4) ◽  
pp. 1108-1117 ◽  
Author(s):  
B. Tränkenschuh ◽  
C. Papp ◽  
T. Fuhrmann ◽  
R. Denecke ◽  
H.-P. Steinrück
Keyword(s):  
Co Adsorption ◽  
Adsorption And Desorption ◽  
In Situ Study ◽  
Site Selective

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

A Brønsted acidic, ionic liquid containing, heteropolyacid functionalized polysiloxane network as a highly selective catalyst for the esterification of dicarboxylic acids

2020 ◽  
Vol 22 (14) ◽  
pp. 4438-4444 ◽  
Author(s):  
Fatemeh Rajabi ◽  
Christian Wilhelm ◽  
Werner R. Thiel
Keyword(s):  
Ionic Liquid ◽  
Dicarboxylic Acids ◽  
Solid Catalyst ◽  
Selective Catalyst ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid

A novel acidic solid catalyst allows the monoesterification of a series of dicarboxylic acids with high selectivities.

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