Adsorption and thermodynamic properties of active sites of a pyrogenic aluminium oxide surface

1993 ◽  
Vol 50 (1-2) ◽  
pp. 163-167
Author(s):  
G. R. Yurchenko ◽  
A. K. Matkovsky ◽  
A. P. Shimansky
Keyword(s):  
Thermodynamic Properties ◽  
Active Sites ◽  
Aluminium Oxide ◽  
Oxide Surface

XAFS analysis of europium species supported on aluminium oxide surface

2000 ◽  
Vol 156 (1-4) ◽  
pp. 65-75 ◽  
Author(s):  
Tomoko Yoshida ◽  
Tsunehiro Tanaka ◽  
Satohiro Yoshida ◽  
Satoru Hikita ◽  
Toshihide Baba ◽  
...  
Keyword(s):  
Aluminium Oxide ◽  
Oxide Surface

Reactive uptake of HONO on aluminium oxide surface

2012 ◽  
Vol 250 ◽  
pp. 50-57 ◽  
Author(s):  
Manolis N. Romanias ◽  
Atallah El Zein ◽  
Yuri Bedjanian
Keyword(s):  
Aluminium Oxide ◽  
Oxide Surface

scholarly journals Direct Evidence of Cobalt Oxyhydroxide Formation on a La0.2Sr0.8CoO3 Perovskite Water Splitting Catalyst

2021 ◽  
Author(s):  
Anthony Boucly ◽  
Luca Artiglia ◽  
Emiliana Fabbri ◽  
Dennis Palagin ◽  
Dino Aergerter ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Active Sites ◽  
Direct Evidence ◽  
Ambient Pressure ◽  
Spectral Feature ◽  
Ex Situ ◽  
Oxide Surface ◽  
Catalytic Systems ◽  
Cobalt Oxyhydroxide

Abstract Understanding the mechanism of oxygen evolution reaction (OER) on perovskite materials is of great interest to tailor the synthesis of better catalyst materials. Despite the huge amount of literature reports, the complexity of catalytic systems and scarce in situ and operando surface sensitive spectroscopic tools render the detection of active sites and the understanding of the reaction mechanisms challenging. Here, we carried out and compared in situ and ex situ ambient pressure X-ray photoelectron spectroscopy experimental procedures on a La0.2Sr0.8CoO3 perovskite OER catalyst. Experimental results show that segregated surface strontium, which is present in the as prepared sample, is leached into the electrolyte after immersion, leading to surface cobalt active sites enrichment. Such cobalt-enriched oxide surface evolves into a new phase, whose spectral feature is detected in situ, during/after OER. With the help of theoretical simulations, such species is assigned to cobalt oxyhydroxide, providing a direct evidence of its crucial role in the reaction.

scholarly journals Engineering Catalytic Active Sites on Cobalt Oxide Surface for Enhanced Oxygen Electrocatalysis

2017 ◽  
Vol 8 (10) ◽  
pp. 1702222 ◽  
Author(s):  
Xiaopeng Han ◽  
Guowei He ◽  
Yu He ◽  
Jinfeng Zhang ◽  
Xuerong Zheng ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Active Sites ◽  
Oxide Surface ◽  
Catalytic Active Sites

Evaluation of effective models of offset CTP plate aluminium oxide surface roughness characterisation

2017 ◽  
Vol 11 (5) ◽  
pp. 433
Author(s):  
Dubravko Risović ◽  
Magdolna Pál ◽  
Dragoljub Novaković ◽  
Nemanja Kašiković ◽  
Živko Pavlović ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Aluminium Oxide ◽  
Oxide Surface ◽  
Effective Models

scholarly journals Investigation of the Nature of Acid Centres on a Pyrogenic γ-Aluminium Oxide Surface Using Pyridine and n-Butylamine

1999 ◽  
Vol 17 (3) ◽  
pp. 147-159
Author(s):  
L.F. Sharanda ◽  
A.P. Shimansky ◽  
V.M. Ogenko ◽  
A.A. Chuiko
Keyword(s):  
Aluminium Oxide ◽  
Oxide Surface
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