Zobrazit minimální záznam
dc.contributor.author |
Bulánek, Roman
|
|
dc.contributor.author |
Wichterlová, Blanka
|
|
dc.contributor.author |
Tichý, Josef
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|
dc.date.accessioned |
2009-03-12T16:11:04Z |
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dc.date.available |
2009-03-12T16:11:04Z |
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dc.date.issued |
2000 |
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dc.identifier |
Univerzitní knihovna (studovna) |
cze |
dc.identifier.issn |
1211-5541 |
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dc.identifier.uri |
http://hdl.handle.net/10195/32658 |
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dc.description.abstract |
The aim of the paper is to bring insight into the relationship between the structure, redox properties and catalytic activity in propane oxidation of the Cu ions in high-silica zeolites. Previous studies revealed several defined Cu ion sites characteristic of high-silica zeolites, differing in coordination-siting, positive charges, and population depending on Cu concentration, and content of Al in the framework. It has been a highly important to relate this knowledge on the structure of Cu ion sites to the redox properties and oxidation catalytic activity of the Cu-high-silica zeolites. The reducibility and catalytic activity in propane oxidation was investigated for the Cu ions planted in zeolites of structural types ZSM-5 (MFI) with different Cu/Al/Si compositions, where NA(I) or H(I) ions were present as cocations, and Cu ions were exchanged at various conditions (concentration and pH). Reducibility of the CU(II) ions was investigated by temperature-programmed reduction (TPR) with hydrogen, and by vacuum and CO treatment of the zeolities; the relative concentration of the CU(I) ions was monitored by IR spectra of formed CU(I)-(CO)n complexes. Conversion of propane to CO and CO2 was studied in dependence on temperature in an integral through-flow reactor and evaluated in turn-over-frequency (TOF) values, representing the activity per one CO ion. |
eng |
dc.format |
p. 189-208 |
cze |
dc.language.iso |
eng |
|
dc.publisher |
Univerzita Pardubice |
cze |
dc.relation.ispartof |
Scientific papers of the University of Pardubice. Series A, Faculty of Chemical technology. 5 (1999) |
eng |
dc.rights |
open access |
eng |
dc.subject |
fyzikální chemie |
cze |
dc.subject |
katalytické procesy |
cze |
dc.subject |
matrice |
cze |
dc.subject |
redoxní systém |
cze |
dc.subject |
Cu-zeolity |
cze |
dc.title |
Effect of zeolite matrices on the redox and catalytic properties of the Cu ions in MFI zeolites |
eng |
dc.type |
article |
cze |
dc.identifier.signature |
47333 |
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dc.peerreviewed |
yes |
eng |
dc.publicationstatus |
published |
eng |
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