NO and CO Adsorption on Nonhomogeneous Pt(100) Surfaces

Langmuir ◽  
1999 ◽  
Vol 15 (1) ◽  
pp. 135-140 ◽  
Author(s):  
D. Y. Zemlyanov ◽  
M. Yu. Smirnov ◽  
E. I. Vovk
Keyword(s):  
Co Adsorption ◽  
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.

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

Calorimetric investigation of NO and CO adsorption on Pd{100} and the influence of preadsorbed carbon

1997 ◽  
Vol 106 (5) ◽  
pp. 1990-1996 ◽  
Author(s):  
Y. Y. Yeo ◽  
L. Vattuone ◽  
D. A. King
Keyword(s):  
Co Adsorption ◽  
Calorimetric Investigation ◽  
No And Co Adsorption

NO and CO adsorption studies on transition metal-exchanged silico-aluminophosphate of type 34 catalysts

2001 ◽  
Vol 207 (1-2) ◽  
pp. 355-365 ◽  
Author(s):  
Deepak B. Akolekar ◽  
Suresh K. Bhargava
Keyword(s):  
Transition Metal ◽  
Co Adsorption ◽  
Adsorption Studies ◽  
No And Co Adsorption

NO reduction by CO over Pd/Ce0.6Zr0.4O2Al2O3 catalysts: in situ FT-IR studies of NO and CO adsorption

2002 ◽  
Vol 334 ◽  
pp. 318-326 ◽  
Author(s):  
R. Di Monte ◽  
J. Kaspar ◽  
P. Fornasiero ◽  
M. Graziani ◽  
C. Pazé ◽  
...  
Keyword(s):  
No Reduction ◽  
Co Adsorption ◽  
No Reduction By Co ◽  
Ir Studies ◽  
No And Co Adsorption ◽  
Ft Ir

STRUCTURAL STUDIES OF MOLECULAR ADSORPTION AT SURFACES USING SCANNED-ENERGY MODE PHOTOELECTRON DIFFRACTION

1994 ◽  
Vol 01 (04) ◽  
pp. 457-464
Author(s):  
D.P. WOODRUFF
Keyword(s):  
Quantitative Methods ◽  
Co Adsorption ◽  
Direct Methods ◽  
Short Review ◽  
Photoelectron Diffraction ◽  
Adsorption Structure ◽  
Energy Mode ◽  
No And Co Adsorption ◽  
Site Identification

A short review is presented of the use of scanned-energy mode photoelectron diffraction for the quantitative determination of the local adsorption structure of molecular species on wellcharacterised metal surfaces. Some of the results [notably for NO and CO adsorption on Ni(111)] highlight the importance of such true quantitative methods relative to "fingerprinting" via vibrational spectroscopy which is shown to have led to incorrect local adsorption site assignments. The use of direct methods for approximate site identification, and chemical-shift photoelectron diffraction for studies of more complex coadsorption structures is described with the aid of specific applications to molecular fragmentation and geometrical reaction path determination. The prognosis for further development and application is discussed.

An UV photoemission study of NO and CO adsorption on Pt (100) and Ru (101̄0) surfaces

1975 ◽  
Vol 51 (1) ◽  
pp. 213-227 ◽  
Author(s):  
H.P. Bonzel ◽  
T.E. Fischer
Keyword(s):  
Co Adsorption ◽  
No And Co Adsorption ◽  
Photoemission Study

NO and CO Adsorption on Over-Exchanged Cu-MCM-22:  A FTIR Study

Langmuir ◽  
2002 ◽  
Vol 18 (18) ◽  
pp. 6875-6880 ◽  
Author(s):  
Alberto Frache ◽  
Marcella Cadoni ◽  
Chiara Bisio ◽  
Leonardo Marchese ◽  
Artur J. S. Mascarenhas ◽  
...  
Keyword(s):  
Co Adsorption ◽  
Ftir Study ◽  
No And Co Adsorption

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
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