A study on CO2 dissociation on a stepped (332) copper surface

Bönicke, Ilva A.; Kirstein, W.; Thieme, F.

doi:10.1016/0039-6028(94)90390-5

Cited by 55 publications

(54 citation statements)

References 15 publications

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“…From the O1ss pectrum,i tw as apparent that the oxidized carbon species were formed on the Cu surface: The peaks at 530.8 and 531.9 eV correspond to the CÀO(H) and CO 3 2À species, respectively. [49,50] With this in mind, the control experiment of exposing the Cu(111)s urface to 2 10 À3 mbar of O 2 at RT for 9min was carried out (Figure 3c). In addition, the O(ato) peak that was produced by CO 2 dissociation was found at 529.7 eV,a nd the gasphase CO 2 peak was centred at 536.5 eV in the O1s region.…”

Section: Resultsmentioning

confidence: 99%

Catalytic Intermediates of CO₂ Hydrogenation on Cu(111) Probed by In Operando Near‐Ambient Pressure Technique

Ren

Yuan

Zhou

et al. 2018

Chemistry A European J

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The in operando monitoring of catalytic intermediates is crucial for understanding the reaction mechanism and for optimizing the reaction conditions to improve the efficiency of the catalytic protocol; however, until now, this has remained a daunting challenge. Herein, we investigated the interaction of CO and H with the Cu(111) surface in a CO hydrogenation model system by using the in operando technique of near-ambient pressure X-ray photoelectron spectroscopy, which is further assisted by ultraviolet photoemission spectroscopy and low-energy electron diffraction (LEED) measurements. These techniques allowed the direct observation of CO dissociation into CO+O on the Cu(111) surface and the adsorption of O on the surface at room temperature. The intermediate HCOO was unambiguously detected in the CO +H environment, which corroborated the formate pathway for methanol formation on the Cu(111) surface. We further found that O coverage can prevent the build up of graphitic carbon on the Cu surface. By taking advantage of the competitive interplay between Cu-O and graphitic carbon, we have proposed a feasible strategy for inhibition of the formation of graphitic carbon by tuning the CO and H partial pressures, which may contribute to sustaining the active Cu catalyst under the reaction conditions.

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Section: Resultsmentioning

confidence: 99%

Catalytic Intermediates of CO₂ Hydrogenation on Cu(111) Probed by In Operando Near‐Ambient Pressure Technique

Ren

Yuan

Zhou

et al. 2018

Chemistry A European J

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“…Using SERS the symmetric stretch mode and deformations modes were reported at 1368 and 650 cm À1 , respectively, for physisorbed CO 2 and at 1182 and 768 cm À1 for chemisorbed CO 2 [53]. The dissociative adsorption of CO 2 has been reported on stepped copper surfaces [57,58], thought to occur through a chemisorbed CO dÀ 2 intermediate and leading to CO and adsorbed oxygen. The adsorbed CO dÀ 2 is also thought to be stabilised by formation of a T-shaped [OCOCO 2 ] À structure with neighbouring physisorbed CO 2 [52].…”

Section: The Co 2 Reaction Stepmentioning

confidence: 95%

A review of the aqueous electrochemical reduction of CO2 to hydrocarbons at copper

Gattrell

Gupta

2006

Journal of Electroanalytical Chemistry

1,380

1,224

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“…Speculations of the presence of carbonate on Cu(3 2 2) has previously been voiced [48]. Further studies are necessary to elucidate the mechanism of carbonate and formate hydrogenation, and STM may bring clues to possible adsorbate-induced reconstructions of the surface.…”

Section: Carbonate Hydrogenationmentioning

confidence: 98%

Formate stability and carbonate hydrogenation on strained Cu overlayers on Pt(111)

Schumacher¹,

Andersson

Nerlov³

et al. 2008

Surface Science

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A study on CO2 dissociation on a stepped (332) copper surface

Cited by 55 publications

References 15 publications

Catalytic Intermediates of CO₂ Hydrogenation on Cu(111) Probed by In Operando Near‐Ambient Pressure Technique

Catalytic Intermediates of CO₂ Hydrogenation on Cu(111) Probed by In Operando Near‐Ambient Pressure Technique

A review of the aqueous electrochemical reduction of CO2 to hydrocarbons at copper

Formate stability and carbonate hydrogenation on strained Cu overlayers on Pt(111)

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A study on CO2 dissociation on a stepped (332) copper surface

Cited by 55 publications

References 15 publications

Catalytic Intermediates of CO2 Hydrogenation on Cu(111) Probed by In Operando Near‐Ambient Pressure Technique

Catalytic Intermediates of CO2 Hydrogenation on Cu(111) Probed by In Operando Near‐Ambient Pressure Technique

A review of the aqueous electrochemical reduction of CO2 to hydrocarbons at copper

Formate stability and carbonate hydrogenation on strained Cu overlayers on Pt(111)

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Product

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Catalytic Intermediates of CO₂ Hydrogenation on Cu(111) Probed by In Operando Near‐Ambient Pressure Technique

Catalytic Intermediates of CO₂ Hydrogenation on Cu(111) Probed by In Operando Near‐Ambient Pressure Technique