SYNTHESIS OF ACETIC ACID FROM ETHANOL BY ELECTROOXIDATION TECHNIQUE USING Ni-Cu-PVC ELECTRODE

Riyanto, Riyanto; Othman, Mohamed Rozali; Salimon, Jumat

doi:10.29037/ajstd.267

Cited by 3 publications

(4 citation statements)

References 16 publications

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“…Unfortunately, the oxidation mechanism is rather complex and, according to Leger [43], it involves eleven possible (2) the main reactions taking place in the cell, and their potentials (expressed as V vs. the SHE for the half reactions). The reactions are for acidic DMFCs [36], alkaline DMFCs [37,38], acidic DEFCs [36,37,39], alkaline DEFCs [38,40,41]. The molecules are not in scale steps.…”

Section: Methanolmentioning

confidence: 99%

“…Fig.2Schematic diagrams of a acid DMFC, b alkaline DMFC, c acidic DEFC and d alkaline DEFC, together with the main reactions taking place in the cell, and their potentials (expressed as V vs. the SHE for the half reactions). The reactions are for acidic DMFCs[36], alkaline DMFCs[37,38], acidic DEFCs[36,37,39], alkaline DEFCs[38,40,41]. The molecules are not in scale…”

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confidence: 99%

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Direct Alcohol Fuel Cells: A Comparative Review of Acidic and Alkaline Systems

Berretti,

Osmieri,

Baglio

et al. 2023

Electrochem. Energy Rev.

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In the last 20 years, direct alcohol fuel cells (DAFCs) have been the subject of tremendous research efforts for the potential application as on-demand power sources. Two leading technologies respectively based on proton exchange membranes (PEMs) and anion exchange membranes (AEMs) have emerged: the first one operating in an acidic environment and conducting protons; the second one operating in alkaline electrolytes and conducting hydroxyl ions. In this review, we present an analysis of the state-of-the-art acidic and alkaline DAFCs fed with methanol and ethanol with the purpose to support a comparative analysis of acidic and alkaline systems, which is missing in the current literature. A special focus is placed on the effect of the reaction stoichiometry in acidic and alkaline systems. Particularly, we point out that, in alkaline systems, OH− participates stoichiometrically to reactions, and that alcohol oxidation products are anions. This aspect must be considered when designing the fuel and when making an energy evaluation from a whole system perspective. Graphical Abstract

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Section: Methanolmentioning

confidence: 99%

mentioning

confidence: 99%

Direct Alcohol Fuel Cells: A Comparative Review of Acidic and Alkaline Systems

Berretti,

Osmieri,

Baglio

et al. 2023

Electrochem. Energy Rev.

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“…The AgC-PVC electrode was prepared using a mechanical alloying technique (MAT) 22,23 by mixing the powder combination of Ag and C (Table 1) with PVC at a ratio of 95% powder mixture to 5% PVC (wt.%). The total weight of the pellet obtained was approximately 1.5 g. Then, 4 mL of THF was added to the mixture to dissolve the PVC.…”

Section: Preparation Of Agc-pvc Electrodementioning

confidence: 99%

Decolorization of C.I. Reactive Orange 4 and Textile Effluents by Electrochemical Oxidation Technique using Silver-Carbon Composite Electrode

Nordin

Amir

Yusop³

et al. 2015

ACSi

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In this study, the electrochemical oxidation of C. I. Reactive Orange 4 (RO4) on a silver-carbon composite (AgC-PVC) electrode was studied using the cyclic voltammetry, potential liner V, and electrolysis methods. The AgC-PVC electrode was used as the working electrode in the electrochemical measurement of RO4 in the presence of NaCl as a supporting electrolyte. The UV-Vis spectra of RO4 after the electrochemical oxidation showed the complete decolorization of the solution. The electrolysis products were characterized using FTIR and GC-MS. The results showed that in the presence of OCl -as an active oxidant, RO4 molecules are broken down into several lower-molecular-weight molecules by the electrochemical technique. The electrode used was also able to reduce the COD, BOD 5 and surfactant contents in the textile effluents using a pilot scale reactor. This proved that the prepared AgC-PVC electrode was beneficial for removing both the color and other pollutants from textile effluents.

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“…[22][23][24][25][26][27]. Ethanol electro-oxidation using nickel or its alloys has been widely accepted in fuel cell development.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Development of Ni-Cu Electrodes by Direct and Pulse Current Coating in Ethanol Electro-oxidation for DEFC

Guchhait¹,

Paul²

2018

Port. Electrochim. Acta

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The electrocatalytic property of electrode materials is the key for getting high cell current and low overvoltage of a fuel cell from fuels electro-oxidation. The bridge between laboratory scale fuel cell development and its fully commercialization is the development of inexpensive but energetic electrode materials. The catalytic actions of an electrode substrate are strongly influenced by the morphology and the grain fineness of the deposited materials. The present investigation aims at finding the effect of electrode deposition mode viz. direct current and pulse current coating, to produce an electrodeposited substrate that can deliver the highest current in a direct ethanol fuel cell. Nickel (Ni) is one of such non precious materials which has been produced through electro synthesis by both pulse current (PC) and direct current (DC) coating. It has been found that the morphology of the deposited is highly influenced by the current density, duty cycle, electrolyte chemistry and right selection of deposition potential on the cathodic polarization curve around the Tafel lines. Electrochemical characterization has been done by cyclic voltammetry (CV), chronoamperometry (CA) and potentiodynamic polarization (PD) studies. The substrate of the electrodeposited material has also been characterized by X-Ray Diffraction analysis (XRD), Energy Dispersive X-Ray Analysis (EDXA) and Scanning Electron Microscope (SEM). It has also been found that the electro synthesis by pulse current coating at pre-selected deposition potential, right at the end of Tafel region, at 40 ºC temperature and 150 second deposition time, gives the highest delivering current of ethanol fuel oxidation.Keywords: Direct ethanol fuel cell, inexpensive Ni-electrode, direct and pulse current coating, cyclic voltammetry, XRD, EDXA, SEM.* Corresponding author. E-mail address: sujitguchhait.chem@gmail.com, dr_spaul@yahoo.com S.K. Guchhait & S. Paul / Port. Electrochim. Acta 36 (2018) 293-307 294 IntroductionThe demand for energy is growing every day, due to fast urbanization, fulfillment of our daily needs and the progress of world economy. The energy demand has been mostly fulfilled by conventional energy resources, such as coal, natural gases, etc. However, the energy harvesting from this resources creates a lot of polluting gases, hazardous substances which have a very harmful impact on global environment, leading to health hazardous problems, not acceptable to the governments of developed and developing nations. So, the production of pollution free renewable energy at an economically viable price is a huge challenge to researchers and scientists. A fuel cell, operated with renewable fuels, is such a kind of alternative technology, to produce clean renewable energy [1]. In the fuel cell, fuel is electrochemically oxidized at the electro catalytic anode surface, knocking the electrons from the fuel, and transferring them in the form of current through the electrode and current collector to the external circuit. The energy conversion efficiency, b...

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SYNTHESIS OF ACETIC ACID FROM ETHANOL BY ELECTROOXIDATION TECHNIQUE USING Ni-Cu-PVC ELECTRODE

Cited by 3 publications

References 16 publications

Direct Alcohol Fuel Cells: A Comparative Review of Acidic and Alkaline Systems

Direct Alcohol Fuel Cells: A Comparative Review of Acidic and Alkaline Systems

Decolorization of C.I. Reactive Orange 4 and Textile Effluents by Electrochemical Oxidation Technique using Silver-Carbon Composite Electrode

Electrochemical Development of Ni-Cu Electrodes by Direct and Pulse Current Coating in Ethanol Electro-oxidation for DEFC

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