The consequences of surface heterogeneity of cobalt nanoparticles on the kinetics of CO methanation

2019 ◽  
Vol 9 (22) ◽  
pp. 6415-6427 ◽  
Author(s):  
José Castillo ◽  
Luis E. Arteaga-Pérez ◽  
Alejandro Karelovic ◽  
Romel Jiménez
Keyword(s):  
Co Hydrogenation ◽  
Surface Heterogeneity ◽  
Hydrogenation Reaction ◽  
Cobalt Nanoparticles ◽  
Nanoparticle Size ◽  
Co Methanation ◽  
Kinetics Of

The CO hydrogenation reaction was studied under methanation conditions (H2/CO >3, 250–300 °C) on Co/SiO2 catalysts with different mean Co nanoparticle size (dp = 4 nm, 13 nm and 33 nm).

Study on the reaction mechanism and kinetics of CO hydrogenation on a fused Fe–Mn catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 95287-95299 ◽  
Author(s):  
A. A. Mirzaei ◽  
E. Rezazadeh ◽  
M. Arsalanfar ◽  
M. Abdouss ◽  
M. Fatemi ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Co Hydrogenation ◽  
Fixed Bed ◽  
Hydrogenation Reaction ◽  
Mechanism And Kinetics ◽  
Kinetics Of ◽  
Micro Reactor

The kinetics of the CO hydrogenation reaction over a Fe–Mn fused catalyst was investigated in a fixed-bed micro-reactor.

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 ο-Chloronitrobenzene Hydrogenation on Palladium/Carbon Catalyst

2011 ◽  
Vol 239-242 ◽  
pp. 161-167
Author(s):  
Xiao Zhen Wang ◽  
Yi Feng Zhu ◽  
Xiao Nian Li
Keyword(s):  
High Selectivity ◽  
Total Yield ◽  
Hydrogenation Reaction ◽  
Commercial Application ◽  
Reaction Conditions ◽  
Solvent Free Conditions ◽  
Hydrogenation Kinetics ◽  
Favorable Reaction ◽  
Kinetics Of ◽  
Very High

A 2 wt % Pd/C catalyst has been prepared by chemical impregnation and used to catalyze the hydrogenation of o-chloronitrobenzene (o-CNB) to o-chloroaniline (o-CAN) in solvent-free conditions. The effects of reaction temperature, H2 pressure, and stirring intensity on the hydrogenation kinetics have been investigated. The hydrogenation reaction showed very high selectivity with dehalogenation side products as low as 0.3% of total yield. The favorable reaction conditions were found to be temperature T = 383 K, stirring speed = 900 rpm, and feeding ratio CNB/catalyst = 200/1 (m/m). The recycled Pd/C still retained more than 98% of its original selectivity after 12 repeat used, indicating the catalyst had strong potentials for commercial application at industrial scale.

On the kinetics of the co-methanation of CO and CO2 on a co-precipitated Ni-Al catalyst

2021 ◽  
Vol 282 ◽  
pp. 119408
Author(s):  
Thomas Burger ◽  
Philipp Donaubauer ◽  
Olaf Hinrichsen
Keyword(s):  
Co Methanation ◽  
Kinetics Of

Study of mechanism and kinetic modeling of CO hydrogenation reaction over the impregnated Co‐Ni/Al 2 O 3 catalyst

2020 ◽  
Vol 67 (7) ◽  
pp. 1152-1166 ◽  
Author(s):  
Maryam Arsalanfar ◽  
Mahdi Fatemi ◽  
Nima Mirzaei ◽  
Majid Abdouss ◽  
Esmaeil Rezazadeh
Keyword(s):  
Kinetic Modeling ◽  
Co Hydrogenation ◽  
Hydrogenation Reaction
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