Electron spin resonance and volumetric investigations of oxygen adsorption on high surface area CoO–MgO

1979 ◽  
Vol 75 (0) ◽  
pp. 533 ◽  
Author(s):  
Dante Cordischi ◽  
Valerio Indovina ◽  
Manlio Occhiuzzi ◽  
Angelo Arieti
Keyword(s):  
Electron Spin Resonance ◽  
Surface Area ◽  
Electron Spin ◽  
High Surface ◽  
High Surface Area ◽  
Oxygen Adsorption ◽  
Spin Resonance

Catalysts Examined by Electron Spin Resonance-Examples from Hydrodesulfurization Catalysis

1980 ◽  
Vol 3 ◽  
Author(s):  
Bernard G. Silbernagel
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
High Surface ◽  
High Surface Area ◽  
Chemical Form ◽  
Model Systems ◽  
Catalyst Characterization ◽  
Defect Sites ◽  
Spin Resonance ◽  
Alumina Supports

ABSTRACTThe utility of electron spin resonance (ESR) for catalyst characterization is illustrated for the desulfurization catalysts used to remove sulfur, nitrogen, and organically bound metals from petroleum. These catalysts consist of active metals (Mo, W, Co, Ni) in mixed oxide and sulfide phases on high surface area alumina supports. Coordinated studies of unsupported sulfide and oxide model systems determine the chemical form and number of defect sites on the actual catalysts. Parallel catalysis studies correlate ESR defects and catalytic activity for many reactions.

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