a kinetic study of carbon electrode reactions in various molten

The kinetics of chlorine evolution and reduction on glassy

1981/1/10Various electrode materials, such as carbon and tungsten [8],.iridium and platinum [9], glassy carbon [10,11], graphite [12] and SnO~ [13] have been used in A1C13 + NaC1 + KC1 and A1C13 + NaC1 melts. Glassy carbon and SnO2 work well for chlorine evolution [13], while carbons other than glassy carbon show considerable swelling and disintegration in the melts [9,11].

Electrochemical formation of carbon nano

2009/7/30Following the study of the carbon deposition mechanism, a large amount of carbon powders was produced by potentiostatic pulses by applying a constant anode (graphite)–cathode (nickel) potential difference (from −3 to −6 V). A typical I = f(t) for ΔE = 4 V at 450 C is presented in Fig. 5 The obtained current increases slowly vs. time due to the increase of the electroactive surface area.

Interactions of molten salts with cathode products in the

2020/12/30Molten salts play multiple important roles in the electrolysis of solid metal compounds, particularly oxides and sulfides, for the extraction of metals or alloys. Some of these roles are positive in assisting the extraction of metals, such as dissolving the oxide or sulfide anions, and transporting them to the anode for discharging, and offering the high temperature to lower the kinetic

Electrochemical Synthesis and Kinetic Evaluation of

The working electrode used in the voltammetry experiments was a glassy carbon disc (1.8 mm 2 area) and a platinum wire was used as the counter electrode. The working electrode used in controlled-potential coulometry and macroscale electrolysis was an assembly of four carbon rods (31 cm 2 ) and large platinum gauze constituted the counter electrode.

Kinetics of Fast Electrode Reactions

Galvanostatic pulse followed by coulostatic impulse with reversed sign: A new double-pulse method for the determination of the kinetic parameters of electrode reactions I. Theory and classification. Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 1972, 39 (1), 25-40.

ANODE ELECTRODE MATERIALS FOR USE IN THE Cu

The ceramic carbon electrode (CCE) material used for this study was prepared by using a base-catalyzed sol-gel method. 200mg of Vulcan XC72 carbon black (Cabot Corp.) was mixed with the 13.5mL methanol (Fisher), 2.3mL of deionized water. 5.2 L of 6M

Kinetic Study

Kinetic study of the CO + NO reactions at 300 C on Pt-Rh/R and Pt-Rh/D catalysts show significant changes in their kinetic behaviour due to deactivation. We have examined both competitive and non competitive adsorptions of NO and CO assuming a preferential adsorption of NO on Rh and CO on Pt.

A potentiometric study of the behavior of a carbon

article{osti_5160668, title = {A potentiometric study of the behavior of a carbon-freon (C, CF/sub 4/) electrode in fluorine-containing halide melts}, author = {Nekrasov, V N and Cherepanov, V B and Ivanovskii, L E and Zaikov, Yu P}, abstractNote = {It was previously noted that a graphite carbon electrode washed with gaseous carbon tetrafluoride should, at high temperatures, be reversible to

Electrochemical Synthesis and Kinetic Evaluation of

The working electrode used in the voltammetry experiments was a glassy carbon disc (1.8 mm 2 area) and a platinum wire was used as the counter electrode. The working electrode used in controlled-potential coulometry and macroscale electrolysis was an assembly of four carbon rods (31 cm 2 ) and large platinum gauze constituted the counter electrode.

Nonmetallic Electrode Materials

Kinetic relations in various potential ranges, Zh. Fiz. Khim 39, 907–912 (1965). Google Scholar 67. T. Berge and R. Tunold, The chlorine/carbon electrode in a silver chloride melt in the temperature range 475–820 C. II. The double-layer capacitance of a carbon

Nonmetallic Electrode Materials

Kinetic relations in various potential ranges, Zh. Fiz. Khim 39, 907–912 (1965). Google Scholar 67. T. Berge and R. Tunold, The chlorine/carbon electrode in a silver chloride melt in the temperature range 475–820 C. II. The double-layer capacitance of a carbon

A Kinetic Study of Methanol Oxidation in Supercritical

The oxidation rate of methanol in supercritical water at 253 bar and temperatures between 673 and 773 K is investigated using an isothermal, isobaric plug-flow tubular reactor and GC/FID and GC/TCD chromatographic methods. Experiments are conducted at a nominal methanol feed concentration of 0.88 mol % (1.53 wt %) using H2O2 as an initial oxidant. In some experiments, the O2/MeOH molar ratios

Controllable Preparation of Carbon Materials with

2019/12/18The electrode area was determined by measuring the immersion depth of the electrode in the molten salt. The counter electrode was a spectral pure graphite rod of 6 mm diameter. The reference electrode was Ag/AgCl (1 wt%), with the internal reference salt of Li 2 CO 3 -Na 2 CO 3 (52: 48 mol%, analytical grade), and all potentials ( E ) were based on Ag/AgCl reference electrode.

Electrolysis/Electrochemistry

Providing study notes, tips, and practice questions for students preparing for their O level or upper secondary examinations. You can find notes and exam questions for Additional math, Elementary math, Physics, Biology and Chemistry. Tips and notes for English

(PDF) A study on dissolution kinetics of carbon in liquid

Many researchers have measured the periodic weight loss [5,11,12] or the change in carbon sample diameter [5] to supplement the bath carbon analysis in kinetic calculation. In the present study, weight change and the change in diameter as a function of time was monitored only for few experiments and are not used for our calculation.

Kinetic Study

Kinetic study of the CO + NO reactions at 300 C on Pt-Rh/R and Pt-Rh/D catalysts show significant changes in their kinetic behaviour due to deactivation. We have examined both competitive and non competitive adsorptions of NO and CO assuming a preferential adsorption of NO on Rh and CO on Pt.

Nonmetallic Electrode Materials

Kinetic relations in various potential ranges, Zh. Fiz. Khim 39, 907–912 (1965). Google Scholar 67. T. Berge and R. Tunold, The chlorine/carbon electrode in a silver chloride melt in the temperature range 475–820 C. II. The double-layer capacitance of a carbon

The kinetics of chlorine evolution and reduction on glassy

1981/1/10Various electrode materials, such as carbon and tungsten [8],.iridium and platinum [9], glassy carbon [10,11], graphite [12] and SnO~ [13] have been used in A1C13 + NaC1 + KC1 and A1C13 + NaC1 melts. Glassy carbon and SnO2 work well for chlorine evolution [13], while carbons other than glassy carbon show considerable swelling and disintegration in the melts [9,11].

Electrolytic synthesis of carbon from the captured CO2 in

2018/1/1Various carbon products such as carbon nanotubes, carbon nanofibers, carbon nanoparticles and graphene, Carbon electrodeposition in molten salts: electrode reactions and applications RSC Adv., 4 (2014), pp. 35808-35817 CrossRef View Record in Scopus

A Model for Gas Phase Mass Transport on the Porous Nickel Electrode in the Molten Carbon

In this study the electrode reaction of hydrogen production in the MCEC is assumed to follow the reverse pathways of hydrogen oxidation proposed by Ang and Sammells (AS mechanism), as given by Reactions 17–19. H2O+M+e− MH+OH− [17] OH−

A potentiometric study of the behavior of a carbon

article{osti_5160668, title = {A potentiometric study of the behavior of a carbon-freon (C, CF/sub 4/) electrode in fluorine-containing halide melts}, author = {Nekrasov, V N and Cherepanov, V B and Ivanovskii, L E and Zaikov, Yu P}, abstractNote = {It was previously noted that a graphite carbon electrode washed with gaseous carbon tetrafluoride should, at high temperatures, be reversible to

Nanomaterials

Hierarchical porous carbon was successfully synthesized from glucose in a molten salt at 800 C for 2 h. It was amorphous and contained numerous oxygen containing functional groups on its surface. The porous carbon with 1.0 wt% Fe(NO 3) 3 9H 2 O oxidizing agent showed the highest specific surface area of 1078 m 2 /g, and the largest pore volume of 0.636 cm 3 /g, among all of the samples.

Determination of Rate Constants and Reaction Orders of

[a] CP=carbon paper, CF=carbon felt, CFb=carbon fiber, G=graphite, CE=composite electrode, GC=glassy carbon, PG=pyrolytic graphite, GRC=graphite reinforced carbon. 3 Conclusions In the present work, we could successfully demonstrate the application of single carbon fiber electrodes for kinetic investigations of the vanadium ion reactions.

Electrode polarization studies in molten Na/sub 2/CO/sub

The reactions occurring on Ni-200, Armco iron and types 304 and 316 stainless steel in molten Na/sub 2/CO/sub 3/ at 1000/sup 0/C under controlled H/sub 2//H/sub 2/S/CO/CO/sub 2/ environments were studied by electrode polarization.

Investigation of Kinetic Parameters Determination Using CFD

Kinetic properties of the molten-salt electrode reaction is essential for design and operational analysis of advanced electrochemical processors Despite a lot of research in this area, these properties are still lacking and have not been thoroughly investigated yet.

Oxygen electrode reaction in molten carbonate fuel

article{osti_7295482, title = {Oxygen electrode reaction in molten carbonate fuel cells}, author = {Appleby, A J and White, R E}, abstractNote = {Molten carbonate fuel cell system is a leading candidate for the utility power generation because of its high efficiency for fuel to AC power conversion, capability for an internal reforming, and a very low environmental impact.

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