Comparison of the surface and catalytic properties of rare earth-promoted CaO catalysts in the oxidative coupling of methane

2006 ◽  
Vol 81 (2) ◽  
pp. 208-215 ◽  
Author(s):  
Vilas H Rane ◽  
Sopan T Chaudhari ◽  
Vasant R Choudhary
Keyword(s):  
Rare Earth ◽  
Oxidative Coupling ◽  
Catalytic Properties ◽  
Oxidative Coupling Of Methane

Catalytic properties and nature of active centers of ferrospheres in oxidative coupling of methane

2016 ◽  
Vol 524 ◽  
pp. 192-199 ◽  
Author(s):  
Alexander G. Anshits ◽  
Oleg A. Bayukov ◽  
Evgenii V. Kondratenko ◽  
Natalia N. Anshits ◽  
Oleg N. Pletnev ◽  
...  
Keyword(s):  
Oxidative Coupling ◽  
Catalytic Properties ◽  
Oxidative Coupling Of Methane ◽  
Active Centers

scholarly journals Influence of Co2 on the Catalytic Performance Of La2O3/CeO2 and CaO/CeO2 Catalysts in the Oxidative Coupling of Methane

2013 ◽  
Vol 15 (1) ◽  
pp. 22-26 ◽  
Author(s):  
Barbara Litawa ◽  
Piotr Michorczyk ◽  
Jan Ogonowski
Keyword(s):  
Oxidative Coupling ◽  
Methane Conversion ◽  
Catalytic Properties ◽  
Catalytic Performance ◽  
Negative Influence ◽  
Oxidative Coupling Of Methane ◽  
Oxygen Mixture ◽  
Impregnation Method ◽  
Promoting Effect ◽  
Conversion Of Methane

In this work the La2O3/CeO2 (33 mol % of La) and CaO/CeO2 (33 mol % of Ca) catalysts were prepared by the impregnation method and characterized by XRD and CO2-TPD. The catalytic properties of the catalysts were tested in the OCM process at 1073 K using the methane/oxygen mixture of the mole ratio 3.7 or 2.5 additionally containing CO2 and helium balance. It was found that in the presence of both catalysts an addition of CO2 enhances the selectivity to the ethylene and ethane and it does not have any negative influence on methane conversion. In the case of the CaO/CeO2 catalyst the promoting effect of CO2 was the highest. When the partial pressure of CO2 equals to 39 kPa the increase in selectivity from 36 to 41% was noted while the conversion of methane equal to 19.4-19.7 %.

Oxidative coupling of methane over BaF2-promoted rare earth oxides with variable valence

1997 ◽  
Vol 159 (1-2) ◽  
pp. 171-185 ◽  
Author(s):  
Ruiquiang Long ◽  
Jizhong Luo ◽  
Mingshu Chen ◽  
Huilin Wan
Keyword(s):  
Rare Earth ◽  
Oxidative Coupling ◽  
Oxidative Coupling Of Methane ◽  
Rare Earth Oxides ◽  
Variable Valence

Influence of the composition of perovskites based on SrMnO3 on their catalytic properties in the oxidative coupling of methane

2005 ◽  
Vol 41 (1) ◽  
pp. 32-36 ◽  
Author(s):  
A. I. Bostan ◽  
Yu. I. Pyatnitskii ◽  
L. N. Raevskaya ◽  
V. G. Pryanikova ◽  
S. A. Nedil’ko ◽  
...  
Keyword(s):  
Oxidative Coupling ◽  
Catalytic Properties ◽  
Oxidative Coupling Of Methane
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