Supported ionic liquid phase-boosted highly active and durable electrocatalysts towards hydrogen evolution reaction in acidic electrolyte

2021 ◽  
Vol 54 ◽  
pp. 342-351
Author(s):  
Qiyou Wang ◽  
Yang Gao ◽  
Zhongyun Ma ◽  
Yan Zhang ◽  
Wenpeng Ni ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Phase ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Supported Ionic Liquid ◽  
Highly Active ◽  
Acidic Electrolyte

One-Pot Synthesis of Substituted Piperidinones and 3,4-Dihydropyrimidinones Using a Highly Active and Recyclable Supported Ionic Liquid Phase Organocatalyst

2016 ◽  
Vol 69 (2) ◽  
pp. 230 ◽  
Author(s):  
Pankaj Sharma ◽  
Manjulla Gupta ◽  
Monika Gupta ◽  
Rajive Gupta
Keyword(s):  
Electron Microscopy ◽  
Ionic Liquid ◽  
Liquid Phase ◽  
Chromatographic Purification ◽  
One Pot ◽  
Phase Form ◽  
Ethyl Sulfate ◽  
Supported Ionic Liquid ◽  
Highly Active ◽  
Transmission Electron

1-Ethyl-3-methylimidazolium ethyl sulfate was synthesized and its supported ionic liquid phase form was prepared and used as an organocatalyst for the synthesis of substituted piperidinones and 3,4-dihydropyrimidinones. The ionic liquid was characterized by 1H NMR, 13C NMR, and mass spectrometry. The catalyst is novel, stable, completely heterogeneous, and recyclable for several times and can be easily recovered by filtration. It was characterized with scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, and energy-dispersive X-ray spectroscopy techniques. The workup procedures are very simple, and products were obtained in good-to-excellent yields with reasonable purities without the need for further chromatographic purification.

scholarly journals Catalytic Hydrogenolysis of Substituted Diaryl Ethers by Using Ruthenium Nanoparticles on an Acidic Supported Ionic Liquid Phase (Ru@SILP-SO3H)

Synlett ◽  
2019 ◽  
Vol 30 (04) ◽  
pp. 405-412 ◽  
Author(s):  
Simon Rengshausen ◽  
Fabian Etscheidt ◽  
Johannes Großkurth ◽  
Kylie Luska ◽  
Alexis Bordet ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Phase ◽  
Diphenyl Ether ◽  
Ruthenium Nanoparticles ◽  
Diaryl Ethers ◽  
Supported Ionic Liquid ◽  
Highly Active ◽  
Catalytic Hydrogenolysis ◽  
Multifunctional Catalyst ◽  
Commercial Equipment

Catalytic hydrogenolysis of diaryl ethers is achieved by using ruthenium nanoparticles immobilized on an acidic supported ionic liquid phase (Ru@SILP-SO3H) as a multifunctional catalyst. The catalyst components are assembled through a molecular approach ensuring synergistic action of the metal and acid functions. The resulting catalyst is highly active for the hydrogenolysis of various diaryl ethers. For symmetric substrates such as diphenyl ether, hydrogenolysis is followed by full hydrodeoxygenation producing the corresponding cycloalkanes as the main products. For unsymmetric substrates, the cleavage of the C–O bond is regioselective and occurs adjacent to the unsubstituted phenyl ring. As hydrogenation of benzene is faster than hydrodeoxygenation over the Ru@SILP-SO3H catalyst, controlled mixtures of cyclohexane and substituted phenols are accessible with good selectivity. Application of Ru@SILP-SO3H catalyst in continuous-flow hydrogenolysis of 2-methoxy-4-methylphenoxybenzene is demonstrated with use of commercial equipment.

One-pot synthesis of various 2-amino-4H-chromene derivatives using a highly active supported ionic liquid catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (38) ◽  
pp. 32052-32059 ◽  
Author(s):  
Pankaj Sharma ◽  
Monika Gupta ◽  
Rajni Kant ◽  
Vivek K. Gupta
Keyword(s):  
Ionic Liquid ◽  
Liquid Phase ◽  
Solvent Free ◽  
One Pot ◽  
Supported Ionic Liquid ◽  
One Pot Synthesis ◽  
Highly Active ◽  
Solvent Free Conditions

Supported ionic liquid phase catalyst was synthesized and applied for the synthesis of chromene derivatives under solvent-free conditions.

Ionic Liquid Originated Synthesis of N,P-doped Graphene for Hydrogen Evolution Reaction

2018 ◽  
Vol 3 (24) ◽  
pp. 6814-6820 ◽  
Author(s):  
Tianhao Li ◽  
Daomei Tang ◽  
Min Wang ◽  
Qunliang Song ◽  
Chang Ming Li
Keyword(s):  
Ionic Liquid ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Doped Graphene

scholarly journals A Mini Review on Doped Nickel-Based Electrocatalysts for Hydrogen Evolution Reaction

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4651
Author(s):  
Yilin Deng ◽  
Wei Lai ◽  
Bin Xu
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Water Electrolysis ◽  
Energy Resources ◽  
Alkaline Media ◽  
Hydrogen Energy ◽  
Heteroatom Doping ◽  
Highly Active ◽  
Production Of Hydrogen

The energy crisis and environmental pollution have attracted much attention and have promoted researches on clean and sustainable hydrogen energy resources. With the help of highly active and stable transition metal nickel-based catalysts, the production of hydrogen from water electrolysis from electrolyzed water has become an inexpensive and efficient strategy for generating hydrogen energy. In recent years, heteroatom doping has been found to be an effective strategy to improve the electrocatalytic hydrogen evolution reaction (HER) performances of nickel-based catalysts in acidic, neutral, and alkaline media. This review will highlight many recent works of inexpensive and readily available heteroatom-doped nickel-based HER catalysts. The evaluation methods for the performances of HER catalyst will be briefly described, and the role of heteroatom doping and its application in nickel-based catalyst will be summarized. This article will also point out some heteroatom doping strategies, which may provide references and inspire the design of other catalysts with dopants.

scholarly journals Influence of the Ionic Liquid on the Activity of a Supported Ionic Liquid Phase FeII Pincer Catalyst for the Hydrogenation of Aldehydes

2019 ◽  
Vol 2019 (30) ◽  
pp. 3503-3510 ◽  
Author(s):  
Zita Csendes ◽  
Julian Brünig ◽  
Nevzat Yigit ◽  
Günther Rupprechter ◽  
Katharina Bica-Schröder ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Phase ◽  
Supported Ionic Liquid

Copper complexes as catalyst precursors in the electrochemical hydrogen evolution reaction

2016 ◽  
Vol 45 (16) ◽  
pp. 6974-6982 ◽  
Author(s):  
Merle Kügler ◽  
Julius Scholz ◽  
Andreas Kronz ◽  
Inke Siewert
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Copper Complexes ◽  
Highly Active

Two copper complexes were investigated with respect to their activity in the electrocatalysed hydrogen evolution reaction. The complexes are precursors for highly active copper(0) and Cu2O deposits.

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