Selectivity change in carbon monoxide hydrogenation by oxidation-reduction treatment of ruthenium/alumina: selectivity versus morphology of ruthenium

1988 ◽  
Vol 92 (3) ◽  
pp. 723-729 ◽  
Author(s):  
Zhengzhong Lin ◽  
Toshio Okuhara ◽  
Makoto Misono
Keyword(s):  
Carbon Monoxide ◽  
Carbon Monoxide Hydrogenation ◽  
Reduction Treatment ◽  
Oxidation Reduction ◽  
Selectivity Change

ChemInform Abstract: CARBON MONOXIDE HYDROGENATION WITH ALUMINA-SUPPORTED CATALYSTS PREPARED FROM PENTACARBONYLOSMIUM ((OS(CO)5))

1984 ◽  
Vol 15 (24) ◽  
Author(s):  
E. O. ODEBUNMI ◽  
Y. ZHAO ◽  
H. KNOEZINGER ◽  
B. TESCHE ◽  
W. H. MANOGUE ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Supported Catalysts ◽  
Carbon Monoxide Hydrogenation

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.

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