Cerium Containing Al- and Zr-Pillared Clays: Promoting Effect of Cerium (III) Ions on Structural and Catalytic Properties

2005 ◽  
Vol 12 (3) ◽  
pp. 171-181 ◽  
Author(s):  
Braja Gopal Mishra ◽  
G. Ranga Rao
Keyword(s):  
Catalytic Properties ◽  
Pillared Clays ◽  
Promoting Effect

Comparison of catalytic properties of NiMoAl2O3 with NiMo supported on Al-, Ti-pillared clays in HDS of residual oils

1997 ◽  
Vol 150 (1) ◽  
pp. 37-52 ◽  
Author(s):  
C.E. Ramos-Galvan ◽  
G. Sandoval-Robles ◽  
A. Castillo-Mares ◽  
J.M. Dominguez
Keyword(s):  
Catalytic Properties ◽  
Pillared Clays

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 %.

Nanocomposites Based Upon Alumina and Zirconia Pillared Clays Loaded with Transition Metal Cations and Clusters of Precious Metals: Synthesis, Properties and Catalysis of NOx Selective Reduction by Hydrocarbons

1999 ◽  
Vol 581 ◽  
Author(s):  
Vladislav A. Sadykov ◽  
R. V. Bunina ◽  
G. M. Alikina ◽  
V. P. Doronin ◽  
T. P. Sorokina ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Nitrogen Oxides ◽  
Transition Metal ◽  
Catalytic Properties ◽  
Precious Metals ◽  
Selective Reduction ◽  
Pillared Clays ◽  
Active Components ◽  
Synthesis Properties ◽  
Nitrogen Oxides Reduction

ABSTRACTThermally stable alumina and zirconia pillared clays loaded with copper and cobalt cations and silver nanoparticles were synthesized. The structural and surface features of these nanosystems were studied and compared with those of bulk analogs -partially stabilized zirconias and γ-alumina loaded with the same active components. Specificity of the catalytic properties of nanocomposites in the reactions of nitrogen oxides reduction by propane, propylene and decane in the excess of oxygen appears to be determined both by the degree of interaction between pillars and active components and the type of reducing agent.

Promoting effect of Ce added to metal oxide supported on Al pillared clays for deep benzene oxidation

2009 ◽  
Vol 91 (1-2) ◽  
pp. 204-209 ◽  
Author(s):  
Shufeng Zuo ◽  
Qinqin Huang ◽  
Jing Li ◽  
Renxian Zhou
Keyword(s):  
Metal Oxide ◽  
Pillared Clays ◽  
Benzene Oxidation ◽  
Promoting Effect

Synthesis of Fe,Al-pillared clays starting from the Al,Fe-polymeric precursor: Effect of synthesis parameters on textural and catalytic properties

2009 ◽  
Vol 88 (1-2) ◽  
pp. 127-134 ◽  
Author(s):  
M.N. Timofeeva ◽  
S.Ts. Khankhasaeva ◽  
Yu.A. Chesalov ◽  
S.V. Tsybulya ◽  
V.N. Panchenko ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Pillared Clays ◽  
Polymeric Precursor ◽  
Synthesis Parameters
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