Gas phase hydrogenation of crotonaldehyde over Pt/Activated carbon catalysts. Influence of the oxygen surface groups on the support

1997 ◽  
Vol 150 (1) ◽  
pp. 165-183 ◽  
Author(s):  
F. Coloma ◽  
A. Sepúlveda-Escribano ◽  
J.L.G. Fierro ◽  
F. Rodríguez-Reinoso
Keyword(s):  
Activated Carbon ◽  
Gas Phase ◽  
Surface Groups ◽  
Carbon Catalysts ◽  
Oxygen Surface

scholarly journals Thermal Modification Effect on Supported Cu-Based Activated Carbon Catalyst in Hydrogenolysis of Glycerol

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 603 ◽  
Author(s):  
Juan Seguel ◽  
Rafael García ◽  
Ricardo José Chimentão ◽  
José Luis García-Fierro ◽  
I. Tyrone Ghampson ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Specific Surface ◽  
Hydrogen Adsorption ◽  
Carbon Support ◽  
Catalytic Performance ◽  
Homogeneous Distribution ◽  
Surface Groups ◽  
Carbon Supports ◽  
Surface Areas ◽  
Oxygen Surface

Glycerol hydrogenolysis to 1,2-propanediol (1,2-PDO) was performed over activated carbon supported copper-based catalysts. The catalysts were prepared by impregnation using a pristine carbon support and thermally-treated carbon supports (450, 600, 750, and 1000 °C). The final hydrogen adsorption capacity, porous structure, and total acidity of the catalysts were found to be important descriptors to understand catalytic performance. Oxygen surface groups on the support controlled copper dispersion by modifying acidic and adsorption properties. The amount of oxygen species of thermally modified carbon supports was also found to be a function of its specific surface area. Carbon supports with high specific surface areas contained large amount of oxygen surface species, inducing homogeneous distribution of Cu species on the carbon support during impregnation. The oxygen surface groups likely acted as anchorage centers, whereby the more stable oxygen surface groups after the reduction treatment produced an increase in the interaction of the copper species with the carbon support, and determined catalytic performances.

Oxygen surface groups of activated carbon steer the chemoselective hydrogenation of substituted nitroarenes over nickel nanoparticles

2017 ◽  
Vol 53 (12) ◽  
pp. 1969-1972 ◽  
Author(s):  
Yujing Ren ◽  
Haisheng Wei ◽  
Guangzhao Yin ◽  
Leilei Zhang ◽  
Aiqin Wang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
High Activity ◽  
Nickel Catalyst ◽  
Nickel Nanoparticles ◽  
Surface Groups ◽  
Reaction Conditions ◽  
Supported Nickel Catalyst ◽  
Chemoselective Hydrogenation ◽  
Oxygen Surface

An activated carbon with OSGs (Oxygen Surface Groups) supported nickel catalyst shows high activity and chemoselectivity for hydrogenation of a variety of substituted nitroarenes under mild reaction conditions.

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