scholarly journals Magnetic Moment Enhancement at Transition Metal and Rare-Earth Metal Surfaces

2013 ◽  
Vol 106 (0) ◽  
pp. 397-404
Author(s):  
A. J. Freeman ◽  
R. Wu
Keyword(s):  
Rare Earth ◽  
Transition Metal ◽  
Rare Earth Metal ◽  
Magnetic Moment ◽  
Metal Surfaces ◽  
Earth Metal

Blending Non-Group-3 Transition Metal and Rare-Earth Metal into a C80 Fullerene Cage with D 5h Symmetry

2018 ◽  
Vol 57 (32) ◽  
pp. 10273-10277 ◽  
Author(s):  
Tao Wei ◽  
Fei Jin ◽  
Runnan Guan ◽  
Jing Huang ◽  
Muqing Chen ◽  
...  
Keyword(s):  
Rare Earth ◽  
Transition Metal ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Fullerene Cage ◽  
Group 3

Promoting Effect of Metal Promoters on Fe(II)-Zn-Based Double Metal Cyanide Complex Catalysts for Biodiesel Synthesis

2011 ◽  
Vol 236-238 ◽  
pp. 3041-3045 ◽  
Author(s):  
Ling Mei Yang ◽  
Peng Mei Lv ◽  
Zhen Hong Yuan ◽  
Wen Luo ◽  
Zhong Ming Wang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Transition Metal ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Molecular Formula ◽  
Cyanide Complex ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Cyanide ◽  
Biodiesel Synthesis

Fe(II)-Zn-based double metal cyanide complex catalysts modified with rare earth metal or transition metal promoters(lanthanum, cerium, zirconium, manganese) for the production of biodiesel were prepared, and the effect of the addition of different metal promoters on the characteristics of the catalyst was studied by using X-ray diffraction (XRD), BET, ICP and Infrared techniques .The experiment results show that the Fe(II)-Zn-based catalyst promoted with 1 wt.% of La(NO3)3·nH2O exhibits the highest catalytic activity for the reaction, being as high as 99.3% of the yield of fatty acid methyl esters (FAME). Fe(II)-Zn-based catalysts have a tentative molecular formula: K2Zn3[Fe(CN)6]2·xH2O· (t-BuOH), where x=3-9 determined by using elemental analysis and ICP. It has been shown that the molecular formula of Fe(II)-Zn-based double metal cyanide complex catalysts did not change by adding 1 wt.% of rare earth metal or transition metal promoters. X-ray diffraction and BET results showed that Fe(II)-Zn-based catalysts with 1 wt.% of metal promoters salts exhibit smaller particle size, higher surface area than the Fe(II)-Zn catalyst ,which may be related to the higher activity of the catalysts.

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