An Infrared Study of NO and CO Adsorption on Zeolite-Supported Ru and Ru−Pt Catalysts

2001 ◽  
Vol 105 (42) ◽  
pp. 10303-10307 ◽  
Author(s):  
R. L. Martins ◽  
M. A. S. Baldanza ◽  
M. Schmal
Keyword(s):  
Co Adsorption ◽  
Pt Catalysts ◽  
Infrared Study ◽  
No And Co Adsorption

An infrared study of NO and CO adsorption on a silica-supported Ru catalyst

1977 ◽  
Vol 49 (3) ◽  
pp. 332-344 ◽  
Author(s):  
A DAVYDOV
Keyword(s):  
Co Adsorption ◽  
Infrared Study ◽  
Ru Catalyst ◽  
No And Co Adsorption

scholarly journals The Properties of Cu Ions in Zeolites CuY Studied by IR Spectroscopy

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4686
Author(s):  
Jerzy Podobiński ◽  
Mariusz Gackowski ◽  
Grzegorz Mordarski ◽  
Katarzyna Samson ◽  
Michał Śliwa ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Positive Charge ◽  
Co Adsorption ◽  
The Other ◽  
Probe Molecules ◽  
Adsorption And Desorption ◽  
Other Hand ◽  
Close Proximity ◽  
No And Co Adsorption ◽  
Cu Ions

The properties of both Cu2+ and Cu+ ions in zeolite CuY were followed with NO and CO as probe molecules. Cu2+ was found to be located in SII, SII*, and SIII sites, whereas Cu+ was found in SII and SII* sites. The fine analysis of the spectra of Cu2+-NO and Cu+-CO adducts suggests that both in SII and in SII* sites two kinds of Cu cations exist. They differ in the positive charge, which may be related to the varying numbers of AlO4− in close proximity. The experiments of NO and CO adsorption and desorption evidenced that both Cu2+ and Cu+ sites of highest positive charge bind probe molecules most strongly but activate them to a lesser extent than the Cu sites of lowest positive charge. The experiments of reduction with hydrogen evidenced that the Cu ions of higher positive charge are first reduced by hydrogen. On the other hand, Cu sites of the lowest positive charge are first oxidized by oxygen. The experiments with CuNaY zeolites of various Cu contents suggest that the first introduced Cu (at low Cu contents) created Cu+, which was the most neutralized by framework oxygens. Such Cu cations are the most stabilized by framework oxygens.

Infrared Study of CO Adsorption and Oxidation over Au/Al2O3Catalyst at 150 K

2001 ◽  
Vol 105 (15) ◽  
pp. 3017-3022 ◽  
Author(s):  
Jifei Jia ◽  
Junko N. Kondo ◽  
Kazunari Domen ◽  
Kenzi Tamaru
Keyword(s):  
Co Adsorption ◽  
Infrared Study

Different support effect of M/ZrO2 and M/CeO2 (M=Pd and Pt) catalysts on CO adsorption: A periodic density functional study

2006 ◽  
Vol 111 (3-4) ◽  
pp. 322-327 ◽  
Author(s):  
Changho Jung ◽  
Hideyuki Tsuboi ◽  
Michihisa Koyama ◽  
Momoji Kubo ◽  
Ewa Broclawik ◽  
...  
Keyword(s):  
Density Functional ◽  
Co Adsorption ◽  
Support Effect ◽  
Functional Study ◽  
Pt Catalysts ◽  
Density Functional Study

Infrared study of CO adsorption on Pd particles supported on NaCl(100)

2002 ◽  
Vol 517 (1-3) ◽  
pp. 115-122 ◽  
Author(s):  
Georges Sitja ◽  
Claude R Henry
Keyword(s):  
Co Adsorption ◽  
Infrared Study

Infrared study of CO adsorption on alumina supported palladium particles

1998 ◽  
Vol 402-404 ◽  
pp. 428-432 ◽  
Author(s):  
K Wolter ◽  
O Seiferth ◽  
J Libuda ◽  
H Kuhlenbeck ◽  
M Bäumer ◽  
...  
Keyword(s):  
Co Adsorption ◽  
Infrared Study ◽  
Supported Palladium ◽  
Palladium Particles

An infrared study of the influence of CO adsorption on the topology of supported ruthenium

1989 ◽  
Vol 115 (1) ◽  
pp. 107-119 ◽  
Author(s):  
F SOLYMOSI
Keyword(s):  
Co Adsorption ◽  
Infrared Study
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