scholarly journals Enhanced properties of Pd/CeO2-nanorods modified with alkaline-earth metals for catalytic oxidation of low-concentration methane

RSC Advances ◽  
2018 ◽  
Vol 8 (67) ◽  
pp. 38641-38647 ◽  
Author(s):  
Tianyu Guo ◽  
Xiaorong Nie ◽  
Jianping Du ◽  
Jinping Li
Keyword(s):  
Catalytic Oxidation ◽  
Alkaline Earth ◽  
Alkaline Earth Metals ◽  
Impregnation Method ◽  
Low Concentration ◽  
Enhanced Properties

A series of Pd/CeO2-nanorods catalysts modified with alkaline-earth metals were prepared by the incipient impregnation method.

Effects of Alkali and Alkaline Earth Metals on NOx Reduction in Coke Combustion

2013 ◽  
Vol 634-638 ◽  
pp. 522-525 ◽  
Author(s):  
Yan Guang Chen ◽  
Hong Jing Han ◽  
Jia Lu ◽  
Dan Dan Li ◽  
Jin Lian Li ◽  
...  
Keyword(s):  
Alkaline Earth ◽  
Nox Reduction ◽  
Combustion Process ◽  
Fixed Bed ◽  
Alkaline Earth Metals ◽  
Reduction Ratio ◽  
Nox Emission ◽  
Fixed Bed Reactor ◽  
Impregnation Method ◽  
Loading Amount

A series of coke samples with loading alkali and alkaline earth metals were prepared by the impregnation method, the NOx emission were investigated in a silica fixed bed reactor in the combustion process of raw coke and coke modified by Na, K, Ca and Mg. The results show that Na, K, Ca and Mg play in-situ catalytic effects on the NOx reduction reactions. When the loading amount of Na2CO3 is 2.0%, the NOx reduction ratio was around 17.4%, when the loading of K2CO3 is 2.0%, the amount of NOx emission is reduced by 26.5%. When the loading of CaCl2 is 2.0%, the amount of NOx emission is reduced by 22.3%. When the loading of MgCl2 is 2.0%, the NOx reduction ratio is about 10.9%.

The Effect of Aluminium and Nickel on some Spectral Lines of Alkaline-Earth Metals in the Course of ICP-AES Analysis

2013 ◽  
Vol 752 ◽  
pp. 259-267
Author(s):  
Olivér Bánhidi
Keyword(s):  
Alkaline Earth ◽  
Earth Element ◽  
Alkaline Earth Metals ◽  
Spectral Lines ◽  
Wide Concentration Range ◽  
Special Effect ◽  
Low Concentration ◽  
Alkaline Earth Element ◽  
Sharp Difference ◽  
Significant Difference

In this paper a special effect of aluminium and nickel on the spectral lines of alkaline-earth metals being present in low concentration was studied. During the study a sharp difference could be obtained in the behaviour of atomic and ionic lines, therefore among the lines investigated both atomic and ionic ones were included. The effect of Ni and Al was investigated in a wide concentration range in case of Be, Mg, Ca and Sr. In case of each of the four alkaline-earth element a significant difference in the depression of the signal could be observed with increasing Al or Ni concentration among atomic and ion lines.

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