نتایج جستجو برای: electrolysis transformation

تعداد نتایج: 225594  

2014
Gregor Walch Alexander Karl Opitz Sandra Kogler Jürgen Fleig

ABSTRACT A solid oxide electrolysis cell (SOEC) with a model-type La0.6Sr0.4FeO3-δ thin-film cathode (working electrode) on an yttria-stabilized zirconia electrolyte and a porous La0.6Sr0.4Co0.2Fe0.8O3-δ counterelectrode was operated in wet argon gas at the cathode. The hydrogen formation rate in the cathode compartment was quantified by mass spectrometry. Determination of the current as well a...

Journal: :Chemosphere 2010
Yi Jiang Xiuping Zhu Hongna Li Jinren Ni

In order to investigate nitro-substitutent's effect on degradation of phenols at boron-doped diamond (BDD) anodes, cyclic voltammetries of three nitrophenol isomers: 2-nitrophenol (2NP), 3-nitrophenol (3NP) and 4-nitrophenol (4NP) were studied, and their bulk electrolysis results were compared with phenol's (Ph) under alkaline condition. The voltammetric study showed nitrophenols could be attac...

2000

A novel steam electrolyzer has been developed. In conventional electrolyzers, oxygen produced from electrolysis is usually released in the air stream. In our novel design, natural gas is used to replace air in order to reduce the chemical potential difference across the electrolyzer, thus minimizing the electrical consumption. The oxygen from the electrolysis is consumed in either a total oxida...

Journal: :Analytical chemistry 2015
Yan Li Haiqiang Deng Jeffrey E Dick Allen J Bard

We report the collisions of single emulsion oil droplets with extremely low dielectric constants (e.g., benzene, ε of 2.27, or cyclohexane, ε of 2.02) as studied via emulsion droplet reactor (EDR) on an ultramicroelectrode (UME). By applying appropriate potentials to the UME, we observed the electrochemical effects of single-collision signals from the bulk electrolysis of single emulsion drople...

2016
Mihails Kusnezoff Nikolai Trofimenko Martin Müller Alexander Michaelis

The solid oxide cell is a basis for highly efficient and reversible electrochemical energy conversion. A single cell based on a planar electrolyte substrate as support (ESC) is often utilized for SOFC/SOEC stack manufacturing and fulfills necessary requirements for application in small, medium and large scale fuel cell and electrolysis systems. Thickness of the electrolyte substrate, and its io...

2012
I. Herraiz - Cardona C. González - Buch E. Ortega V. Pérez - Herranz J. García - Antón

Hydrogen is considered to be the most promising candidate as a future energy carrier. One of the most used technologies for the electrolytic hydrogen production is alkaline water electrolysis. However, due to the high energy requirements, the cost of hydrogen produced in such a way is high. In continuous search to improve this process using advanced electrocatalytic materials for the hydrogen e...

2013
A. Carpinteri

Several evidences of anomalous nuclear reactions occurring in condensed matter have been observed during electrolysis, solid fracture and liquid cavitation. Despite the great amount of experimental results coming from the so-called Cold Nuclear Fusion and Low Energy Nuclear Reaction research fields, the comprehension of these phenomena still remains unanswered. On the other hand, as reported by...

2002
Z. Ežerskis Z. Jusys

Potentiodynamic investigations on a platinum electrode show that oxidation of phenol, monochlorophenols, dichlorophenols, 2,3,6-, 2,4,5-, 2,4,6-trichlorophenols, and pentachlorophenol in 1 M NaOH solution, containing 1 mM of phenols, proceeds in the potential region of Pt oxide formation. The oxidation rate of phenols decreases with the increase in the number of chlorine atoms in the benzene ri...

Journal: :Chemosphere 2012
H C Arredondo Valdez G García Jiménez S Gutiérrez Granados C Ponce de León

The degradation of paracetamol in aqueous solutions in the presence of hydrogen peroxide was carried out by photochemistry, electrolysis and photoelectrolysis using modified 100 pores per inch reticulated vitreous carbon electrodes. The electrodes were coated with catalysts such as TiO(2) and CuO/TiO(2)/Al(2)O(3) by electrophoresis followed by heat treatment. The results of the electrolysis wit...

2000
B. Laoun

Hydrogen can be produced from water electrolysis which can operate at atmospheric pressure or high pressure. Today’s industry including vehicle one, devotes efforts to produce high pressure hydrogen by using pressurized electrolyser. The purpose of this work is to estimate the ideal electrical energy needed for high pressure hydrogen under high pressure water electrolysis conditions. Calculatio...

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