Infrared-Band Intensities of Adsorbed Carbon Monoxide

Seanor, D. A.; Amberg, C. H.

doi:10.1063/1.1703271

Cited by 104 publications

(24 citation statements)

References 15 publications

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“…Seanor and Armberg [8] recorded frequencies appreciably higher than 2110 cm' with silica-supported copper. They observed a frequency of 2143 cm~, which gradually decreased to 2130 cm~at an increasing number of reduction and degassing treatments at 400 C. With Cu/Si02 and Cu/Al2 03 Pritchard et al also found a decrease in frequency from (2122 ±2) cm~to (2105 ±3) cm~,when the reduction temperature was raised from 140°C to 350°C.Admission of oxygen led to higher frequencies, which decreased again after reduction.…”

Section: Discussionmentioning

confidence: 99%

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An infrared spectroscopic study of the adsorption of carbon monoxide on silica-supported copper particles

Jong

Geus

Joziasse

1980

Applications of Surface Science

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Section: Discussionmentioning

confidence: 99%

“…therefore attributed bands at higher frequencies than about 2110 cm' to the presence of not completely reduced copper. CO adsorbed on CuO shows frequencies of about 2135 cm~ [8,9].…”

Section: Discussionmentioning

confidence: 99%

An infrared spectroscopic study of the adsorption of carbon monoxide on silica-supported copper particles

Jong

Geus

Joziasse

1980

Applications of Surface Science

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“…This result for CO is much different from those reported so far. [35][36][37][38][39] In the pioneering work by Seanor and Amberg, it is reported that E of the adsorbed CO species first decreases with increasing v(C0) frequency, then is almost constant and could even vanish in the 2150-2190 cm-' range, and then slightly increases in the 2190-2230 cm-' range.35 This feahue has been supported by subsequent experimental work^.^^-^* A qualitative explanation has been given by Brown and Doren~bourg.~~ They have also predicted that the v ( C 0 ) band would not be seen around 2175 cm-' because E could be almost 0 around this frequency. However, as pointed out by Sauer et al, these results probably have to be considered with care?O There is the case that relatively strong interactions, characterized by the large values of v ( C 0 ) (e.g.…”

Section: Comparison Between Adsorbed Species On Basmentioning

confidence: 97%

Direct Comparison of N2 and CO as IR-Spectroscopic Probes of Acid Sites in H-ZSM-5 Zeolite

Wakabayashi¹,

Kondo²,

Domen³

et al. 1995

J. Phys. Chem.

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Adsorptions of N2 and CO on H-ZSM-5 at low temperature are examined in sequence by means of transmission FT-IR spectroscopy, which enables the direct comparison of N2 and CO as probes of acid sites. Specific adsorptions of N2 and CO on Bransted acid sites (BAS) and Lewis acid sites (LAS) are distinguished by their characteristic absorption bands at 2334 (BAS) and 2351 cm-' (LAS) for N2 and at 2177 (BAS) and 2227 cm-' (LAS) for CO, respectively. Previously reported assignments of these bands are confirmed by the results of the N2 and CO adsorption mutually. Relative molar extinction coefficients, E , of the adsorbed N2 and CO species are determined as follows: c(C0 on LAS) x 2.6, c(C0 on BAS) x 8.1, 4N2 on BAS) 0.50, assuming that E(NZ on LAS) is unity. Other characteristics of NZ and CO as probes of acid sites are discussed.

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“…The binding of CO to surfaces of silica, silicates, metal oxides, and transition metals to form an adsorbed phase is well documented (13)(14)(15)(16)(17)(18)(19). In fact, C 0 is one of the most strongly chemisorbed of the simple gases.…”

Section: Reagent Solution and Reaction With Comentioning

confidence: 99%

Interaction of ruthenium(II) octaethylporphyrin with carbon monoxide on a fused-quartz surface

Corsini¹,

Mehdi²,

Chan³

1980

Can. J. Chem.

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ALFIO CORSI\I, HUSAI\ MEHDI, and ALLEN CHAN. Can. J. Chem. 58.527 (1980). When carbon monoxide gas is interacted with a methanolic reagent solution of hydrazine and K[Ru(III)OEP(CN),] (OEP = octaethyiporphy iin). a carbonylated complex of Ru(I1)OEP is formed and excess carbon monoxide is strongly adsorbed on the walls of the fused-quartz reaction cell. The adsorbed carbon monoxide is very difficult to remove and unless appropriate measures are taken, it remains on the cell wails to interact with the reagent solution in subsequent experiments, thus leading to the possibility of erroneous interpretation. The amount of adsorbed carbon monoxide, while less than a complete monolayer, is significant. ALFIO CORSJNI. H U S A I~ MEHDI et ALLEN C H A~. Can. J . Chem. 58,527 (1980). Quand le monoxyde de carbone gazeux reagi avec une solution methanoliqueil s e forme un complexe carbonyle de Ru(II1)OEP et l'exces de monoxyde est fortemenr adsorbe par les parois de la cellule de la reaction en quartz fondu. Le monoxyde carbone adsorbe est tres difficile a enlever et bien que des precautions soient prises, il derneure dans les parois de la cellule et reagi par la suite avec le reactif en solution dans d'autres experiences conduisant ainsi a des interpretations erronCes. La quantitk de monoxyde de carbone absorbee est significative bien qu'elle soit moindre qu'une monocouche complete.[Traduit par le journal]There has been considerable interest in the study of dioxygen, dinitrogen, and carbonyl derivatives of synthetic metalloporphyrins with the view towards the development of simple models that mimic the behaviour of the more complex biological heme proteins (e.g., refs. 1-6).Our interest in metalloporphyrins has been focused on their suitability as potential selective analytical reagents for the determination of carbon monoxide in polluted atmospheres. In an effort to improve upon the sensitivity of the Fe(II)TPP(pip), system (TPP = meso-tetraphenylporphine, pip = piperidine) for CO (7), we have initiated a study of Wu(II) psrphyrins as potential reagents. This study was stimulated by reports of the formation of stable carbonylated complexes of several Ru(II) porphyrins (6,(8)(9)(10)(11)(12).We wish to report that in the course of investigations with the Ru(1I)OEP complex (OEP = octaethylporghyrin), we found that the surface of the fused-quartz cells used in the work became grossly contaminated with strongly adsorbed CO, which subsequently interacted with the Ru(II)OEP reagent solution in later experiments. A purpose of this report is to caution other workers engaged in similar studies with metalloporphyrins to ensure that the surfaces of reaction vessels are free of adsorbed CO prior to experimentation. Spectrophotometric MeasurementsSpectra of the ruthenium complexes of QEP in the visible range were recorded on a GCA McPherson double-beam spectrophotometer. Model EU-700, against methanol or distilled water references. Stoppered fused-quartz cells (1 cm) were used. Differential infrared measurements to identify CO adsorbed o...

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Infrared-Band Intensities of Adsorbed Carbon Monoxide

Cited by 104 publications

References 15 publications

An infrared spectroscopic study of the adsorption of carbon monoxide on silica-supported copper particles

An infrared spectroscopic study of the adsorption of carbon monoxide on silica-supported copper particles

Direct Comparison of N2 and CO as IR-Spectroscopic Probes of Acid Sites in H-ZSM-5 Zeolite

Interaction of ruthenium(II) octaethylporphyrin with carbon monoxide on a fused-quartz surface

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