Influence of oxidation-reduction treatment on the formation of cobalt nanoparticles in the Zr-Co-H system

2007 ◽  
Vol 62 (3) ◽  
pp. 132-135
Author(s):  
A. V. Mugtasimov ◽  
P. A. Chernavskii
Keyword(s):  
Cobalt Nanoparticles ◽  
Reduction Treatment ◽  
Oxidation Reduction

scholarly journals Catalytic Activity of Oxidation-Reduction Pre-Treated Ni3Al for Methane Steam Reforming

2010 ◽  
Vol 89-91 ◽  
pp. 645-650 ◽  
Author(s):  
Ya Xu ◽  
Dong Hyun Chun ◽  
Jun Hyuk Jang ◽  
Masahiko Demura ◽  
Dang Moon Wee ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Steam Reforming ◽  
Active Surface ◽  
Methane Steam Reforming ◽  
Reduction Treatment ◽  
Highly Active ◽  
Methane Steam ◽  
Oxidation Reduction ◽  
Pre Treatment ◽  
Oxidation In Air

The catalytic activity of oxidation-reduction pre-treated Ni3Al powder for methane steam reforming was examined. The oxidation-reduction pre-treatment consisted of two steps: oxidation in air at various temperatures from 973 to 1373 K, and then followed by reduction in H2 at 873 K. It was found that the oxidation-reduction treatments significantly reduced the onset temperature of activity, i.e., improved the activity of Ni3Al powder at low temperatures. The characterization of Ni3Al surface showed that an outer surface layer of fine NiO particles were formed on the surface of Ni3Al after oxidation. These NiO particles were reduced to metallic Ni by the subsequent reduction treatment, resulting in the high activity for methane steam reforming. These results indicate that the Ni3Al can form highly active surface structure with oxidation-reduction treatment, having excellent heat resistance.

Influence of oxidation–reduction treatment on the microstructure of Co/SiO2 catalyst

1998 ◽  
Vol 175 (1-2) ◽  
pp. 113-120 ◽  
Author(s):  
D. Potoczna-Petru ◽  
J.M. Jabłoński ◽  
J. Okal ◽  
L. Krajczyk
Keyword(s):  
Reduction Treatment ◽  
Oxidation Reduction

Influence of oxidation-reduction treatment on dispersion of rhenium supported on γ-Al2O3

1997 ◽  
Vol 162 (1-2) ◽  
pp. 161-169 ◽  
Author(s):  
J. Okal ◽  
H. Kubicka ◽  
L. K epiński ◽  
L. Krajczyk
Keyword(s):  
Reduction Treatment ◽  
Oxidation Reduction
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