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20231223124855.0 |
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231223s2007 xx ||||| 00| ||eng c |
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|a pubmed24n0570.xml
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|a (DE-627)NLM17106528X
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|a (NLM)17587660
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Hannemann, Stefan
|e verfasserin
|4 aut
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| 245 |
1 |
2 |
|a A versatile in situ spectroscopic cell for fluorescence/transmission EXAFS and X-ray diffraction of heterogeneous catalysts in gas and liquid phase
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 05.09.2007
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|a Date Revised 25.06.2007
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a A new spectroscopic cell suitable for the analysis of heterogeneous catalysts by fluorescence EXAFS (extended X-ray absorption fine structure), transmission EXAFS and X-ray diffraction during in situ treatments and during catalysis is described. Both gas-phase and liquid-phase reactions can be investigated combined with on-line product analysis performed either by mass spectrometry or infrared spectroscopy. The set-up allows measurements from liquid-nitrogen temperature to 973 K. The catalysts are loaded preferentially as powders, but also as self-supporting wafers. The reaction cell was tested in various case studies demonstrating its flexibility and its wide applicability from model studies at liquid-nitrogen temperature to operando studies under realistic reaction conditions. Examples include structural studies during (i) the reduction of alumina-supported noble metal particles prepared by flame-spray pyrolysis and analysis of alloying in bimetallic noble metal particles (0.1%Pt-0.1%Pd/Al(2)O(3), 0.1%Pt-0.1%Ru/Al(2)O(3), 0.1%Pt-0.1%Rh/Al(2)O(3), 0.1%Au-0.1%Pd/Al(2)O(3)), (ii) reactivation of aged 0.8%Pt-16%BaO-CeO(2) NO(x) storage-reduction catalysts including the NO(x) storage/reduction cycle, and (iii) alcohol oxidation over gold catalysts (0.6%Au-20%CuO-CeO(2))
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|a Journal Article
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| 700 |
1 |
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|a Casapu, Maria
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Grunwaldt, Jan Dierk
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Haider, Peter
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Trüssel, Philippe
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Baiker, Alfons
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Welter, Edmund
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 14(2007), Pt 4 vom: 15. Juli, Seite 345-54
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
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| 773 |
1 |
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|g volume:14
|g year:2007
|g number:Pt 4
|g day:15
|g month:07
|g pages:345-54
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|a AR
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| 952 |
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|d 14
|j 2007
|e Pt 4
|b 15
|c 07
|h 345-54
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