The dissociative adsorption of N2 on a multiply promoted iron catalyst used for ammonia synthesis: a temperature-programmed desorption study

1994 ◽  
Vol 24 (3-4) ◽  
pp. 317-331 ◽  
Author(s):  
M. Muhler ◽  
F. Rosowski ◽  
G. Ertl
Keyword(s):  
Ammonia Synthesis ◽  
Iron Catalyst ◽  
Temperature Programmed Desorption ◽  
Dissociative Adsorption ◽  
Desorption Study ◽  
Temperature Programmed ◽  
Adsorption Of N2

The Study of Iron Catalyst for Ammonia Synthesis in Chemical Engineering

2012 ◽  
Vol 577 ◽  
pp. 97-100
Author(s):  
Dong Mei Zhao ◽  
Xue Peng Liu
Keyword(s):  
Chemical Engineering ◽  
Hydrogen Adsorption ◽  
Ammonia Synthesis ◽  
Iron Catalyst ◽  
Nitrogen Adsorption ◽  
Temperature Programmed Desorption ◽  
Iron Catalysts ◽  
Synthesis Activity ◽  
Temperature Programmed ◽  
Adsorption Intensity

The temperature programmed desorption technique is used to study the hydrogen adsorption on the catalytic surface of fused iron catalysts with different oxide precursors in chemical engineering. The different catalysts desorption active energy, desorped temperature and their amouts desorped have been attained. The desorption energies, desorped temperatures and desorption amounts have been related to the iron ratio (Fe2+/Fe3+). It is compared with the curve of ammonia synthesis activity against iron ratio. The inhibition of hydrogen in the ammonia synthesis reaction is verified, the adsorption intensity of hydrogen controls the inhibition to nitrogen adsorption

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