Inelastic electron scattering study of metallic oxidation: Synergistic effects involving electrons during the low temperature oxidation of Ni(111)

1995 ◽  
Vol 13 (3) ◽  
pp. 1574-1578 ◽  
Author(s):  
Wei Li ◽  
M. J. Stirniman ◽  
S. J. Sibener
Keyword(s):  
Low Temperature ◽  
Electron Scattering ◽  
Synergistic Effects ◽  
Inelastic Electron ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Inelastic Electron Scattering ◽  
Scattering Study

Electron-scattering study of low-lying levels in 63,65Cu

1988 ◽  
Vol 66 (2) ◽  
pp. 182-186 ◽  
Author(s):  
C. Rangacharyulu ◽  
E. J. Ansaldo
Keyword(s):  
Excitation Energy ◽  
Electron Scattering ◽  
Weak Coupling ◽  
Form Factors ◽  
Coupling Model ◽  
Inelastic Electron ◽  
Inelastic Electron Scattering ◽  
Wide Range ◽  
Model Predictions ◽  
Scattering Study

Inelastic electron–scattering form factors have been measured for 63,65Cu levels below 4 MeV excitation energy for momentum transfers q < 1.2 fm−1. The data obtained, along with the results from previous work, were used to test the validity of simple weak-coupling model predictions. It was found that while the weak-coupling model is only partially successful in describing the properties of the low-lying levels in those nuclei, the properties of the 65Cu levels are well described as two valence neutrons coupled to 63Cu levels over a wide range of momentum transfers.

scholarly journals Influence of Co-Precipitation Agent on the Structure, Texture and Catalytic Activity of Au-CeO2 Catalysts in Low-Temperature Oxidation of Benzyl Alcohol

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 641
Author(s):  
Lukasz Wolski ◽  
Grzegorz Nowaczyk ◽  
Stefan Jurga ◽  
Maria Ziolek
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Low Temperature ◽  
Benzyl Alcohol ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Oxidation Of Benzyl Alcohol ◽  
Key Factor ◽  
Au Particle Size ◽  
Co Precipitation

The aim of the study was to establish the influence of a co-precipitation agent (i.e., NaOH–immediate precipitation; hexamethylenetetramine/urea–gradual precipitation and growth of nanostructures) on the properties and catalytic activity of as-synthesized Au-CeO2 nanocomposites. All catalysts were fully characterized with the use of XRD, nitrogen physisorption, ICP-OES, SEM, HR-TEM, UV-vis, XPS, and tested in low-temperature oxidation of benzyl alcohol as a model oxidation reaction. The results obtained in this study indicated that the type of co-precipitation agent has a significant impact on the growth of gold species. Immediate co-precipitation of Au-CeO2 nanostructures with the use of NaOH allowed obtainment of considerably smaller and more homogeneous in size gold nanoparticles than those formed by gradual co-precipitation and growth of Au-CeO2 nanostructures in the presence of hexamethylenetetramine or urea. In the catalytic tests, it was established that the key factor promoting high activity in low-temperature oxidation of benzyl alcohol was size of gold nanoparticles. The highest conversion of the alcohol was observed for the catalyst containing the smallest Au particle size (i.e., Au-CeO2 nanocomposite prepared with the use of NaOH as a co-precipitation agent).

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