Correlation between phase composition and activity of complex oxide catalysts

2011 ◽  
Vol 84 (3) ◽  
pp. 372-376 ◽  
Author(s):  
A. A. Ostroushko ◽  
O. V. Russkikh ◽  
A. V. Porsin ◽  
S. V. Pivchenko
Keyword(s):  
Phase Composition ◽  
Complex Oxide ◽  
Oxide Catalysts

scholarly journals The Influence of Ceric Oxide on Phase Composition and Activity of Iron Oxide Catalysts

2012 ◽  
Vol 02 (01) ◽  
pp. 28-33
Author(s):  
Aleksandr A. Lamberov ◽  
Ekaterina V. Dementyeva ◽  
Dmitriy I. Vavilov ◽  
Olga V. Kuzmina ◽  
Rinat R. Gilmullin ◽  
...  
Keyword(s):  
Phase Composition ◽  
Iron Oxide ◽  
Oxide Catalysts ◽  
Ceric Oxide

The Oxide Scale Growth Mechanism on Fe20Cr5Al+RE Alloy in SO2+O2

2009 ◽  
Vol 289-292 ◽  
pp. 541-550 ◽  
Author(s):  
Jerzy Jedlinski ◽  
Zbigniew Żurek ◽  
Martah Homa ◽  
G. Smoła ◽  
J. Camra
Keyword(s):  
Phase Composition ◽  
Secondary Ion Mass Spectrometry ◽  
Grazing Angle ◽  
Oxidation Mechanism ◽  
Complex Oxide ◽  
X Ray Diffraction ◽  
X Ray ◽  
Thin Foils ◽  
Manufacturing Procedure ◽  
Secondary Ion

The oxidation mechanism of FeCrAl (+RE), RE: reactive elements: Y and Hf) thin foils was studied at temperatures ranging from 1093 K to 1173 K in SO2+1%O2 atmosphere. Materials were subjected to isothermal and thermal cycling exposures as well as to the so-called two-stage-oxidation. In the latter, an oxygen isotope 18O2 was used as a tracer. Starting materials and scales were characterized using Grazing Angle X-Ray Diffraction (GA-XRD), EDX, SEM, XPS and High Spatial Resolution Secondary Ion Mass Spectrometry (HSR-SIMS). The obtained results showed within the studied range of exposure conditions the scales on all the studied alloys grow via outward mechanism typical for transient oxides and not for the -Al2O3 which is consistent with phase composition results and scale morphology and/or microstructure. It was also found that ‘as received’ foils are not bare metals but complex oxide-on-metal systems resulting from their manufacturing procedure. The obtained results are discussed in terms of the diffusion-related transport properties of the scale and of the scale phase composition.

Influence of sodium on the phase composition of bismuth-molybdenum oxide catalysts supported on SiO2

1977 ◽  
Vol 7 (4) ◽  
pp. 413-417 ◽  
Author(s):  
E. L. Sazonova ◽  
L. P. Olenkova ◽  
L. M. Plyasova ◽  
D. V. Tarasova
Keyword(s):  
Phase Composition ◽  
Molybdenum Oxide ◽  
Oxide Catalysts

Better Catalysts through Microscopy: Mesoscale M1/M2 Intergrowth in Molybdenum–Vanadium Based Complex Oxide Catalysts for Propane Ammoxidation

ACS Nano ◽  
2015 ◽  
Vol 9 (4) ◽  
pp. 3470-3478 ◽  
Author(s):  
Qian He ◽  
Jungwon Woo ◽  
Alexei Belianinov ◽  
Vadim V. Guliants ◽  
Albina Y. Borisevich
Keyword(s):  
Complex Oxide ◽  
Oxide Catalysts ◽  
Propane Ammoxidation

NO reduction utilizing complex oxide catalysts

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 85434-85439 ◽  
Author(s):  
Kimber L. Stamm Masias ◽  
Torin C. Peck ◽  
Paul T. Fanson
Keyword(s):  
Catalytic Activity ◽  
Precious Metal ◽  
No Reduction ◽  
Precious Metals ◽  
Complex Oxide ◽  
Oxide Catalysts ◽  
Order Of Magnitude ◽  
Metal Doped

Precious metal doped BaCeO3 compounds show catalytic activity toward NO an order of magnitude higher than traditional supported precious metals.

Atomic-Scale Investigation of Two-Component MoVO Complex Oxide Catalysts Using Aberration-Corrected High-Angle Annular Dark-Field Imaging

2010 ◽  
Vol 22 (6) ◽  
pp. 2033-2040 ◽  
Author(s):  
William D. Pyrz ◽  
Douglas A. Blom ◽  
Masahiro Sadakane ◽  
Katsunori Kodato ◽  
Wataru Ueda ◽  
...  
Keyword(s):  
Complex Oxide ◽  
Dark Field ◽  
Oxide Catalysts ◽  
Atomic Scale ◽  
High Angle ◽  
Dark Field Imaging ◽  
Two Component ◽  
Annular Dark Field ◽  
Field Imaging ◽  
Aberration Corrected
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