Investigation of the CO+NO reaction over the Cu(001) surface

Godowski, P. J.; Onsgaard, J.; ̧gor, A. Ga; Kondys, M.; Li, Zhe Shen

doi:10.1016/j.cplett.2005.03.020

Cited by 11 publications

(4 citation statements)

References 21 publications

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“…Studies of NO-CO reaction have been carried out on Pt(1 0 0) [30][31][32][33][34][35][36][37], Pt(1 1 1) [38], Pt(1 1 2) [39], Pd(1 0 0) [40], Pd(1 1 0) [41][42][43][44], Pd(1 1 1) [42,43,45,[46][47][48][49][50][51][52][53], Rh(1 0 0) [54], Rh(1 1 0) [54], Rh(1 1 1) [54][55][56][57][58][59][60][61][62][63][64][65], Ir(1 1 1) [66], Ir(2 1 1) [67], Cu(0 0 1) [68], Ag(1 1 1) [69], Pd/Cu(1 1 1) [48], Fe/Rh(1 0 0) [55], Rh/CeO x (1 1 1) [70], Pd/MgO(1 0 0) [71,72], Pt-Rh/TiO 2 (1 1 0) [73]...…”

Section: No-co Reactionmentioning

confidence: 99%

Surface science studies of selective catalytic reduction of NO: Progress in the last ten years

Griffiths

Norton

2009

Surface Science

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Section: No-co Reactionmentioning

confidence: 99%

Surface science studies of selective catalytic reduction of NO: Progress in the last ten years

Griffiths

Norton

2009

Surface Science

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“…DOI: 10.1103/PhysRevB. 81 Copper-based catalysts are of importance to a number of industrial processes including the synthesis of methanol, 1 the reduction and decomposition of nitrogen oxides, [2][3][4] the oxydehydrogenation of ammonia, 5,6 electroless plating, 7 fuel cell electrodes, 8 and the treatment of waste water. 9 In copper catalysis-as for many other metal catalysts-surface oxidation and oxidic overlayers are widely believed to play a crucial role.…”

mentioning

confidence: 99%

Density functional study of oxygen on Cu(100) and Cu(110) surfaces

et al. 2010

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Using density-functional theory within the generalized gradient approximation, we investigate the interaction between atomic oxygen and Cu͑100͒ and Cu͑110͒ surfaces. We consider the adsorption of oxygen at various on-surface and subsurface sites of Cu͑100͒ for coverages of 1/8 to 1 monolayers ͑ML͒. We find that oxygen at a coverage of 1/2 ML preferably binds to Cu͑100͒ in a missing-row surface reconstruction, while oxygen adsorption on the nonreconstructed surface is preferred at 1/4 ML coverage consistent with experimental results. For Cu͑110͒, we consider oxygen binding to both nonreconstructed and added-row reconstructions at various coverages. For coverages up to 1/2 ML coverage, the most stable configuration is predicted to be a p͑2 ϫ 1͒ missing-row structure. At higher oxygen exposures, a surface transition to a c͑6 ϫ 2͒ added strand configuration with 2/3 ML oxygen coverage occurs. Through surface Gibbs free energies, taking into account temperature and oxygen partial pressure, we construct ͑p , T͒ surface phase diagrams for O/Cu͑100͒ and O/Cu͑110͒. On both crystal faces, oxygenated surface structures are stable prior to bulk oxidation. We combine our results with equivalent ͑p , T͒ surface free energy data for the O/Cu͑111͒ surface to predict the morphology of copper nanoparticles in an oxygen environment.

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“…After the reaction, the surface exists some O as seen by AES in Figure S6 and shows a p(2x1) LEED pattern (Figure S7b), consistent with those observed on Cu(001). [ 54 ] These results reveal that the Cu(110) surface is covered by adsorbed oxygen rather than CO under NO+CO reaction conditions.…”

Section: Resultsmentioning

confidence: 91%

NO Reduction on Cu‐Based Model Catalysts Studied by in‐situIRAS

et al. 2022

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Cu-based catalyst has been widely used for catalytic reduction of NO. Well-defined TiO x /Cu(110) films were prepared and investigated by in situ reflection absorption infrared spectroscopy (IRAS), Auger electron spectroscopy (AES) and low energy electron diffraction (LEED). A complex surface structure of Cu + (-O-Ti-)-O-Cu + /Cu(110) was proposed, in which the topmost surface Cu + is highly dispersed, isolated and fixed by the TiO x layer. Such a 'single atom'-like surface site appears a very narrow  CO peak at 2130 cm -1 , and is more stable upon both CO reduction and vacuum annealing than the Cu 2 O/Cu(110). Such isolated Cu + (-O-Ti-) site on TiO x /Cu( 110) is also fairly stable in NO+CO reaction, but the overall catalytic activity is slightly lower than that on the Cu(110) surface, indicating that the single-atom Cu + (-O-Ti-) site is less efficient for NO+CO reaction at the examined conditions. The study provides useful information for the design and application of single-atom catalysts and understanding the nature of catalytically active centers.

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Investigation of the CO+NO reaction over the Cu(001) surface

Cited by 11 publications

References 21 publications

Surface science studies of selective catalytic reduction of NO: Progress in the last ten years

Surface science studies of selective catalytic reduction of NO: Progress in the last ten years

Density functional study of oxygen on Cu(100) and Cu(110) surfaces

NO Reduction on Cu‐Based Model Catalysts Studied by in‐situIRAS

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