Effect of the Kinks Blockage by Adsorbed Hydrogen on the Kinetics of Iron Electrode

1993 ◽  
Vol 97 (8) ◽  
pp. 1020-1033 ◽  
Author(s):  
I. H. Plonski
Keyword(s):  
Iron Electrode ◽  
Adsorbed Hydrogen ◽  
Kinetics Of

Kinetics of carbon monoxide methanation on a Ni/SiO2 catalyst

1990 ◽  
Vol 55 (7) ◽  
pp. 1678-1685
Author(s):  
Vladimír Stuchlý ◽  
Karel Klusáček
Keyword(s):  
Carbon Monoxide ◽  
Reaction Rate ◽  
Catalyst Activity ◽  
Adsorbed Hydrogen ◽  
Reaction Products ◽  
Co Methanation ◽  
Molar Ratios ◽  
Rate Determining Step ◽  
Higher Temperature ◽  
Kinetics Of

Kinetics of CO methanation on a commercial Ni/SiO2 catalyst was evaluated at atmospheric pressure, between 528 and 550 K and for hydrogen to carbon monoxide molar ratios ranging from 3 : 1 to 200 : 1. The effect of reaction products on the reaction rate was also examined. Below 550 K, only methane was selectively formed. Above this temperature, the formation of carbon dioxide was also observed. The experimental data could be described by two modified Langmuir-Hinshelwood kinetic models, based on hydrogenation of surface CO by molecularly or by dissociatively adsorbed hydrogen in the rate-determining step. Water reversibly lowered catalyst activity and its effect was more pronounced at higher temperature.

Kinetics of electrode processes on the iron electrode

1947 ◽  
Vol 1 ◽  
pp. 259 ◽  
Author(s):  
B. Kabanov ◽  
R. Burstein ◽  
A. Frumkin
Keyword(s):  
Iron Electrode ◽  
Electrode Processes ◽  
Kinetics Of

Kinetics of Carbon Tetrachloride Reduction at an Oxide-Free Iron Electrode

1997 ◽  
Vol 31 (8) ◽  
pp. 2385-2391 ◽  
Author(s):  
Michelle M. Scherer ◽  
John C. Westall ◽  
Margaret Ziomek-Moroz ◽  
Paul G. Tratnyek
Keyword(s):  
Carbon Tetrachloride ◽  
Iron Electrode ◽  
Free Iron ◽  
Kinetics Of

Studies of the kinetics of aluminium incorporation into an iron electrode in molten salts by linear sweep voltammetry

1989 ◽  
Vol 19 (2) ◽  
pp. 271-274 ◽  
Author(s):  
F. Lantelme ◽  
E. Cherrat ◽  
Y. Chryssoulakis ◽  
S. Kalogeropoulou
Keyword(s):  
Molten Salts ◽  
Linear Sweep Voltammetry ◽  
Iron Electrode ◽  
Linear Sweep ◽  
Kinetics Of

Energy transfer in the quenching of singlet molecular oxygen - I. Kinetics of quenching of singlet oxygen

1977 ◽  
Vol 356 (1686) ◽  
pp. 287-294 ◽  
Keyword(s):  
Energy Transfer ◽  
Singlet Oxygen ◽  
Molecular Oxygen ◽  
Rate Coefficients ◽  
Adsorbed Hydrogen ◽  
Spherical Vessel ◽  
Singlet Molecular Oxygen ◽  
Hydrogen Halides ◽  
Kinetics Of ◽  
Made In

Quenching studies have been made in a spherical vessel containing known concentrations of O 2 ( 1 ∆ g ) and O 2 ( 1 ∑ + g ). Rate coefficients for the quenching of O 2 ( 1 ∆ ) by CO and of O 2 ( 1 ∑) by N 2 O, D 2 O, NH 3 , C 3 H 8 , C 2 H 2 , HCl and DCl have been determined. Efficient wall deactivation of O 2 ( 1 ∆) by adsorbed hydrogen halides was observed.

The Hydrogen Evolution Reaction on Fe Electrode Material in 1 M NaOH Solution

2015 ◽  
Vol 228 ◽  
pp. 252-257 ◽  
Author(s):  
Magdalena Popczyk ◽  
B. Łosiewicz
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrode Material ◽  
Electrochemical Impedance ◽  
Porous Electrodes ◽  
Iron Electrode ◽  
Iron Corrosion ◽  
Naoh Solution ◽  
Eis Measurements ◽  
Kinetics Of

Kinetics of hydrogen evolution reaction (HER) was investigated in 1 M NaOH solution at room temperature on a polycrystalline Fe electrode material which was electrochemically activated and unactivated. Studies of the HER were carried out using steady-state polarization and electrochemical impedance spectroscopy (EIS) measurements. It was found that for the Fe electrode material after activation atj= -320 mA cm-2for 24 h, the increase in the catalytic activity towards the HER was observed in comparison with that on the unactivated iron electrode material.Acimpedance behavior of the Fe electrode changed from a typical for smooth electrodes before activation (one time constant in the circuit) to that being characteristic for porous electrodes after activation (two time constants in the circuit). The reason for that is formation of solid products of the iron corrosion in alkaline solution which can cause passivation of the electrode surface and catalyse the HER.

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