Adsorption, desorption and reaction kinetics of nitric oxide on a stepped pd(111) surface

Schmick, H.-D.; Wassmuth, H.-W.

doi:10.1016/0039-6028(82)90341-7

Cited by 97 publications

(48 citation statements)

References 27 publications

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“…The Cu(100) CO c(2 × 2) structure (relative coverage θ = 0.5) was prepared by exposing the copper surface to CO saturation at a sample temperature of 150 K. 15 The 2 × 2 structures of CO and NO on Pd(111) (θ = 0.75) were prepared by saturation exposure at 200 K, which is in agreement with the preparation reported in the literature. [17][18][19] As shown on the left side of Fig. 2, the sharp HAS diffraction pattern confirms the good ordering of the molecular adlayers.…”

Section: Resultssupporting

confidence: 61%

METASTABLE (2³S) HELIUM ATOM SCATTERING FROM MOLECULAR ADSORBATES ON Pd AND Cu SURFACES

Fouquet¹,

Witte

1999

Surf. Rev. Lett.

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The de-excitation of metastable (2 3 S1) He * atoms upon scattering from clean, NO-and CO-covered Cu(100) and Pd(111) surfaces has been investigated, and the He * survival probability was measured as a function of the NO and CO coverage. The corresponding adlayer structures were characterized in situ by ground state He atom scattering (HAS). The present results support an earlier interpretation of metastable de-excitation spectroscopy (MDS) data indicating a suppression of the resonance ionization (RI) de-excitation channel in the case of CO adsorption due to a screening of the metal surface by the adsorbate layer. In contrast, for NO on Pd(111) no increase of the He * survival probability was observed.

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Section: Resultssupporting

confidence: 61%

METASTABLE (2³S) HELIUM ATOM SCATTERING FROM MOLECULAR ADSORBATES ON Pd AND Cu SURFACES

Fouquet¹,

Witte

1999

Surf. Rev. Lett.

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“…High coverages of NO inhibit the dissociation. NO adsorbs molecularly on Pd at room temperature, while dissociation of NO is reported for single crystals and supported catalysts at temperatures larger than 500 K (16)(17)(18)(19)(20)(21)(22)(23). TPD experiments of CO (22) showed that the order of strength of CO adsorption is Pt > Pd > Rh.…”

Section: Introductionmentioning

confidence: 93%

“…One of the distinctive features of Pd and Pt, as compared to Rh, is their less facile dissociation of NO (2). The dissociative adsorption of NO on Pd is strongly structure sensitive (15) and is favored by stepped sites (16)(17)(18). The degree of dissociation is shown to depend both on the temperature and coverage of NO.…”

Section: Introductionmentioning

confidence: 94%

Electrochemical Promotion of the Catalytic Reduction of NO by CO on Palladium

Marwood

Vayenas

1997

Journal of Catalysis

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“…Stepped Pd(211) provides a stage suitable to examine this pathway because it is rather stable toward reconstructions [30] and significantly produces N 2 O in the NO reduction as observed on other stepped Pd surfaces [31,32].…”

Section: Introductionmentioning

confidence: 99%

N2 emission-channel change in NO reduction over stepped Pd(211) by angle-resolved desorption

et al. 2012

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A sharp change in the N 2 emission channel from N 2 O(a)→N 2 (g) +O(a) to N(a)+N(a)→N 2 (g) has been found at around 500 K in a steady-state NO+D 2 reaction over stepped Pd(211)= [(S)3(111)×(100)] by means of angle-resolved desorption. The desorbing N 2 is highly collimated at around 30° off normal toward the step-down direction below about 500 K due to the intermediate N 2 O decomposition, whereas, above 500 K, the near normally directed desorption due to the recombination of N(a) is relatively enhanced. The N 2 O decomposition channel is promoted when the reaction is carried out with hydrogen (deuterium) and the channel change is accelerated by quick changes of the amounts of surface hydrogen and oxygen (or NO(a)) into the opposite directions, and enhanced nitrogen removal as ammonia on the resultant hydrogen-rich surface. In the steady-state NO+CO reaction, the N 2 emission channel gradually changes above 500 K toward recombination. A model for the off-normal N 2 emission is briefly described.

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Adsorption, desorption and reaction kinetics of nitric oxide on a stepped pd(111) surface

Cited by 97 publications

References 27 publications

METASTABLE (2³S) HELIUM ATOM SCATTERING FROM MOLECULAR ADSORBATES ON Pd AND Cu SURFACES

METASTABLE (2³S) HELIUM ATOM SCATTERING FROM MOLECULAR ADSORBATES ON Pd AND Cu SURFACES

Electrochemical Promotion of the Catalytic Reduction of NO by CO on Palladium

N2 emission-channel change in NO reduction over stepped Pd(211) by angle-resolved desorption

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Adsorption, desorption and reaction kinetics of nitric oxide on a stepped pd(111) surface

Cited by 97 publications

References 27 publications

METASTABLE (23S) HELIUM ATOM SCATTERING FROM MOLECULAR ADSORBATES ON Pd AND Cu SURFACES

METASTABLE (23S) HELIUM ATOM SCATTERING FROM MOLECULAR ADSORBATES ON Pd AND Cu SURFACES

Electrochemical Promotion of the Catalytic Reduction of NO by CO on Palladium

N2 emission-channel change in NO reduction over stepped Pd(211) by angle-resolved desorption

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Product

Resources

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METASTABLE (2³S) HELIUM ATOM SCATTERING FROM MOLECULAR ADSORBATES ON Pd AND Cu SURFACES

METASTABLE (2³S) HELIUM ATOM SCATTERING FROM MOLECULAR ADSORBATES ON Pd AND Cu SURFACES