Self organization of alkali metal on a catalytic metal surface

Research output: Contribution to journal › Article › Research › peer review

Authors

  • H. Marbach
  • S. Günther
  • B. Luerßen
  • L. Gregoratti
  • M. Kiskinova
  • R. Imbihl

Research Organisations

External Research Organisations

  • Sincrotrone Trieste
View graph of relations

Details

Original languageEnglish
Pages (from-to)161-164
Number of pages4
JournalCatalysis letters
Volume83
Issue number3-4
Publication statusPublished - Nov 2002

Abstract

The spatial distribution of potassium on an Rh(110) surface during the catalytic O2 + H2 reaction is investigated employing photoelectron emission microscopy (PEEM) and scanning photoelectron microscopy (SPEM) as spatially resolving in situ methods. Depending on the reaction conditions, potassium condenses reversibly into macroscopic islands where it is coadsorbed with oxygen. Mass transport of potassium with the reaction fronts is observed. Differences in the mobility and in the bonding strength of potassium on the "reduced" and on the oxygen-covered surface areas are considered to be the key factors for the formation of the stationary concentration patterns.

Keywords

    Coadsorption, H + O reaction, Potassium, Promoter, Reaction fronts, Rhodium, Scanning photoelectron microscopy, Selforganization

ASJC Scopus subject areas

Cite this

Self organization of alkali metal on a catalytic metal surface. / Marbach, H.; Günther, S.; Luerßen, B. et al.
In: Catalysis letters, Vol. 83, No. 3-4, 11.2002, p. 161-164.

Research output: Contribution to journal › Article › Research › peer review

Marbach, H, Günther, S, Luerßen, B, Gregoratti, L, Kiskinova, M & Imbihl, R 2002, 'Self organization of alkali metal on a catalytic metal surface', Catalysis letters, vol. 83, no. 3-4, pp. 161-164. https://doi.org/10.1023/A:1021073711705
Marbach, H., Günther, S., Luerßen, B., Gregoratti, L., Kiskinova, M., & Imbihl, R. (2002). Self organization of alkali metal on a catalytic metal surface. Catalysis letters, 83(3-4), 161-164. https://doi.org/10.1023/A:1021073711705
Marbach H, Günther S, Luerßen B, Gregoratti L, Kiskinova M, Imbihl R. Self organization of alkali metal on a catalytic metal surface. Catalysis letters. 2002 Nov;83(3-4):161-164. doi: 10.1023/A:1021073711705
Marbach, H. ; Günther, S. ; Luerßen, B. et al. / Self organization of alkali metal on a catalytic metal surface. In: Catalysis letters. 2002 ; Vol. 83, No. 3-4. pp. 161-164.
Download
@article{4ffe2d6e75014b968b87be6b6c0e6107,
title = "Self organization of alkali metal on a catalytic metal surface",
abstract = "The spatial distribution of potassium on an Rh(110) surface during the catalytic O2 + H2 reaction is investigated employing photoelectron emission microscopy (PEEM) and scanning photoelectron microscopy (SPEM) as spatially resolving in situ methods. Depending on the reaction conditions, potassium condenses reversibly into macroscopic islands where it is coadsorbed with oxygen. Mass transport of potassium with the reaction fronts is observed. Differences in the mobility and in the bonding strength of potassium on the {"}reduced{"} and on the oxygen-covered surface areas are considered to be the key factors for the formation of the stationary concentration patterns.",
keywords = "Coadsorption, H + O reaction, Potassium, Promoter, Reaction fronts, Rhodium, Scanning photoelectron microscopy, Selforganization",
author = "H. Marbach and S. G{\"u}nther and B. Luer{\ss}en and L. Gregoratti and M. Kiskinova and R. Imbihl",
year = "2002",
month = nov,
doi = "10.1023/A:1021073711705",
language = "English",
volume = "83",
pages = "161--164",
journal = "Catalysis letters",
issn = "1011-372X",
publisher = "Springer Netherlands",
number = "3-4",

}

Download

TY - JOUR

T1 - Self organization of alkali metal on a catalytic metal surface

AU - Marbach, H.

AU - Günther, S.

AU - Luerßen, B.

AU - Gregoratti, L.

AU - Kiskinova, M.

AU - Imbihl, R.

PY - 2002/11

Y1 - 2002/11

N2 - The spatial distribution of potassium on an Rh(110) surface during the catalytic O2 + H2 reaction is investigated employing photoelectron emission microscopy (PEEM) and scanning photoelectron microscopy (SPEM) as spatially resolving in situ methods. Depending on the reaction conditions, potassium condenses reversibly into macroscopic islands where it is coadsorbed with oxygen. Mass transport of potassium with the reaction fronts is observed. Differences in the mobility and in the bonding strength of potassium on the "reduced" and on the oxygen-covered surface areas are considered to be the key factors for the formation of the stationary concentration patterns.

AB - The spatial distribution of potassium on an Rh(110) surface during the catalytic O2 + H2 reaction is investigated employing photoelectron emission microscopy (PEEM) and scanning photoelectron microscopy (SPEM) as spatially resolving in situ methods. Depending on the reaction conditions, potassium condenses reversibly into macroscopic islands where it is coadsorbed with oxygen. Mass transport of potassium with the reaction fronts is observed. Differences in the mobility and in the bonding strength of potassium on the "reduced" and on the oxygen-covered surface areas are considered to be the key factors for the formation of the stationary concentration patterns.

KW - Coadsorption

KW - H + O reaction

KW - Potassium

KW - Promoter

KW - Reaction fronts

KW - Rhodium

KW - Scanning photoelectron microscopy

KW - Selforganization

UR - http://www.scopus.com/inward/record.url?scp=0036827441&partnerID=8YFLogxK

U2 - 10.1023/A:1021073711705

DO - 10.1023/A:1021073711705

M3 - Article

AN - SCOPUS:0036827441

VL - 83

SP - 161

EP - 164

JO - Catalysis letters

JF - Catalysis letters

SN - 1011-372X

IS - 3-4

ER -