A highly efficient zinc catalyst for selective electroreduction of carbon dioxide in aqueous NaCl solution

2015 ◽  
Vol 3 (32) ◽  
pp. 16409-16413 ◽  
Author(s):  
Fengjiao Quan ◽  
Dan Zhong ◽  
Hancheng Song ◽  
Falong Jia ◽  
Lizhi Zhang
Keyword(s):  
Carbon Dioxide ◽  
High Activity ◽  
Electrochemical Reduction ◽  
Low Cost ◽  
Nacl Solution ◽  
Highly Efficient

A low-cost nanoscale zinc catalyst, prepared by a facile electrochemical strategy, exhibits high activity toward electrochemical reduction of CO2 to CO with up to 93% Faraday efficiency in aqueous NaCl solution.

Electrochemical Reduction of Carbon Dioxide in 1-Ethyl-3-Methylimidazolium BF4/Methanol Electrolyte

2013 ◽  
Vol 781-784 ◽  
pp. 2573-2576 ◽  
Author(s):  
Jin Shi ◽  
You Jian Jia ◽  
Feng Shi ◽  
Xiao Chun Wang
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Current Density ◽  
Low Cost ◽  
Electrical Energy ◽  
High Viscosity ◽  
Methanol Solution ◽  
Electrical Energy Storage ◽  
Ag Electrode ◽  
Low Viscosity

Carbon dioxide (CO2) can be electrochemically reduced to useful products under mild condition. In recent years, increased attempts have been devoted to use ionic liquid (IL) as the solvents, electrolytes and catalysts for CO2 reduction. However, owing to the high viscosity of ILs, CO2 diffusion in ILs is restrained, lead to low current density of CO2 reduction. To overcome this problem, in present work, we used methanol as the organic solvent to dilute 1-Ethyl-3-Methylimidazolium BF4 ([EmiBF4), an commonly used IL in electrochemistry, the obtained [BmiBF4/methanol solution have many unique properties, such as low viscosity, high ionic conductivity, high CO2 solubility and low cost. The current density of CO2 reduction reached 14.2 mA/cm2 at-1.95V (vs SCE) on Ag electrode. Electrochemical reduction of CO2 in [BmiBF4/methanol solution provides a hopeful technique for CO2 recycling utilization and renewable electrical energy storage.

Mesoporous palladium–copper bimetallic electrodes for selective electrocatalytic reduction of aqueous CO2to CO

2016 ◽  
Vol 4 (13) ◽  
pp. 4776-4782 ◽  
Author(s):  
Mu Li ◽  
Junjie Wang ◽  
Peng Li ◽  
Kun Chang ◽  
Cuiling Li ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Cycle ◽  
Electrochemical Reduction ◽  
Economic Approach ◽  
Electrocatalytic Reduction ◽  
Artificial System ◽  
Highly Efficient

Finding a highly efficient, selective and economic approach for electrochemical reduction of aqueous carbon dioxide is a great challenge in realizing an artificial system for a sustainable carbon cycle.

Highly Efficient Electrochemical Reduction of Carbon Dioxide to Formate on Sn Modified Bi2O3 Heterostructure

2021 ◽  
Author(s):  
Doufeng Wu ◽  
Pengzuo Chen ◽  
Dongmei Feng ◽  
Jiajia Song ◽  
Yun Tong
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Co2 Reduction ◽  
Highly Efficient ◽  
Electrocatalytic Performance

In this work, the Sn species are deposited onto the surface of Bi2O3 material by a facile disproportionated reaction and the prepared catalyst shows superior electrocatalytic performance for CO2 reduction....

Zn-based ionic liquids as highly efficient catalysts for chemical fixation of carbon dioxide to epoxides

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14277-14284 ◽  
Author(s):  
Mengshuai Liu ◽  
Fangxiao Wang ◽  
Lei Shi ◽  
Lin Liang ◽  
Jianmin Sun
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
High Activity ◽  
Chemical Fixation ◽  
Synergetic Effects ◽  
Highly Efficient ◽  
Fixation Of Carbon Dioxide

Novel Zn-TSILs catalysts were developed, which showed high activity towards the cycloaddition of CO2 to epoxides due to synergetic effects.

scholarly journals Electroreduction of Carbon Dioxide to Formate using Highly Efficient Bimetallic Sn-Pd Aerogels

2022 ◽  
Author(s):  
Maryam Abdinejad ◽  
Mozhgan Khorasani-Motlagh ◽  
Meissam Noroozifar ◽  
Heinz-Bernhard Kraatz
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Atmospheric Co2 ◽  
Highly Efficient ◽  
Commercial Scale ◽  
Co2 Levels ◽  
Carbon Dioxide Co2

Electrochemical reduction of carbon dioxide (CO2) to valuable materials is a promising approach to supress atmospheric CO2 levels. In order to bring this strategy to a commercial scale, the design...

Highly Efficient Bifunctional Electrocatalyst (ORR/OER) Derived from GO Functionalized with Carbonyl, Hydroxyl and Epoxy Groups for Rechargeable Zinc-Air Batteries

2021 ◽  
Author(s):  
Lei Gu ◽  
Xuan-Long Sun ◽  
Jiao Zhao ◽  
Bing-Quan Gong ◽  
Zheng-Lv Bao ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Activity ◽  
Water Splitting ◽  
High Performance ◽  
Low Cost ◽  
Bifunctional Electrocatalyst ◽  
Highly Efficient ◽  
Air Battery ◽  
Epoxy Groups ◽  
Zinc Air Batteries

Electrocatalysts play an important role in fuel cells, metal-air battery and water-splitting devices. The development of low cost, high activity and high performance bifunctional electrocatalysts for ORR and OER is...

Photochemical and Electrochemical Reduction of Carbon Dioxide Catalyzed by a Polyoxometalate-Organic Photosensitizer Complex

2018 ◽  
Author(s):  
Chandan Dey ◽  
Ronny Neumann
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Voltammetry ◽  
Formic Acid ◽  
Electrochemical Reduction ◽  
Mass Spectroscopy ◽  
Photochemical Reactions ◽  
Reducing Agent ◽  
Covalent Attachment ◽  
Hybrid Complex ◽  
Open Face

<p>A manganese substituted Anderson type polyoxometalate, [MnMo<sub>6</sub>O<sub>24</sub>]<sup>9-</sup>, tethered with an anthracene photosensitizer was prepared and used as catalyst for CO<sub>2</sub> reduction. The polyoxometalate-photosensitizer hybrid complex, obtained by covalent attachment of the sensitizer to only one face of the planar polyoxometalate, was characterized by NMR, IR and mass spectroscopy. Cyclic voltammetry measurements show a catalytic response for the reduction of carbon dioxide, thereby suggesting catalysis at the manganese site on the open face of the polyoxometalate. Controlled potentiometric electrolysis showed the reduction of CO<sub>2</sub> to CO with a TOF of ~15 sec<sup>-1</sup>. Further photochemical reactions showed that the polyoxometalate-anthracene hybrid complex was active for the reduction of CO<sub>2</sub> to yield formic acid and/or CO in varying amounts dependent on the reducing agent used. Control experiments showed that the attachment of the photosensitizer to [MnMo<sub>6</sub>O<sub>24</sub>]<sup>9-</sup> is necessary for photocatalysis.</p><div><br></div>

Graphene Supported Tungsten Carbide as Catalyst for Electrochemical Reduction of CO2

2019 ◽  
Author(s):  
Sahithi Ananthaneni ◽  
Rees Rankin
Keyword(s):  
Tungsten Carbide ◽  
Electrochemical Reduction ◽  
Low Cost ◽  
Co2 Reduction ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Metal Carbides ◽  
Depth Study ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

<div>Electrochemical reduction of CO2 to useful chemical and fuels in an energy efficient way is currently an expensive and inefficient process. Recently, low-cost transition metal-carbides (TMCs) are proven to exhibit similar electronic structure similarities to Platinum-Group-Metal (PGM) catalysts and hence can be good substitutes for some important reduction reactions. In this work, we test graphenesupported WC (Tungsten Carbide) nanocluster as an electrocatalyst for the CO2 reduction reaction. Specifically, we perform DFT studies to understand various possible reaction mechanisms and determine the lowest thermodynamic energy landscape of CO2 reduction to various products such as CO, HCOOH, CH3OH, and CH4. This in-depth study of reaction energetics could lead to improvements and develop more efficient electrocatalysts for CO2 reduction.<br></div>

Application of Disk Aerators to Recarbonation of Alkaline Wastewater from Wet Gasification of Carbide

1991 ◽  
Vol 24 (7) ◽  
pp. 277-284 ◽  
Author(s):  
E. Gomólka ◽  
B. Gomólka
Keyword(s):  
Carbon Dioxide ◽  
Liquid Phase ◽  
Gas Phase ◽  
Flue Gas ◽  
Carbonic Acid ◽  
Low Cost ◽  
Flue Gases ◽  
Carbon Dioxide Content ◽  
Patent Claim ◽  
Phase Dispersion

Whenever possible, neutralization of alkaline wastewater should involve low-cost acid. It is conventional to make use of carbonic acid produced via the reaction of carbon dioxide (contained in flue gases) with water according to the following equation: Carbon dioxide content in the flue gas stream varies from 10% to 15%. The flue gas stream may either be passed to the wastewater contained in the recarbonizers, or. enter the scrubbers (which are continually sprayed with wastewater) from the bottom in oountercurrent. The reactors, in which recarbonation occurs, have the ability to expand the contact surface between gaseous and liquid phase. This can be achieved by gas phase dispersion in the liquid phase (bubbling), by liquid phase dispersion in the gas phase (spraying), or by bubbling and spraying, and mixing. These concurrent operations are carried out during motion of the disk aerator (which is a patent claim). The authors describe the functioning of the disk aerator, the composition of the wastewater produced during wet gasification of carbide, the chemistry of recarbonation and decarbonation, and the concept of applying the disk aerator so as to make the wastewater fit for reuse (after suitable neutralization) as feeding water in acetylene generators.

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