|
|||||
|
|
Characterization of Supported Gold Catalysts with 197Au Mössbauer Effect Spectroscopy |
|
| Authors: | Goossens A. Crajé M. W. J. van der Kraan A. M. Zwijnenburg A. Makkee M. Moulijn J. A. Grisel R. J. H. Nieuwenhuys B. E. de Jongh L. J. |
| Affiliation: | (1) Kamerlingh Onnes Laboratorium, Universiteit Leiden, P.O. Box 9504, 2300 RA Leiden, The Netherlands;(2) Interfacultair Reactor Instituut, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands;(3) Industrial Catalysis, DelftChemTech, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands;(4) Gorlaeus Laboratorium, Universiteit Leiden, P.O. Box 9502, 2300 RA Leiden, The Netherlands;(5) Kamerlingh Onnes Laboratorium, Universiteit Leiden, P.O. Box 9504, 2300 RA Leiden, The Netherlands |
| Abstract: | We report on a 197Au Mössbauer study of several types of supported gold catalysts. Differences in particle size show up in the Mössbauer spectra by a change in the relative weight of the spectral contribution of the surface atoms. The presence of ionic gold in active gold catalysts is not observed. The spectra can be interpreted in terms of bulk-like contributions from the inner-core atoms plus contributions from the outermost atoms at the surface of the particles. |
| Keywords: | gold catalysis 197Au Mö ssbauer spectroscopy |
| 本文献已被 SpringerLink 等数据库收录！ | |