On the mutual interactions between noble metal crystallites and zeolitic supports and their impacts on catalysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62243136%3A_____%2F07%3A%230000213" target="_blank" >RIV/62243136:_____/07:#0000213 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S1381116906012209" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1381116906012209</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.molcata.2006.09.017" target="_blank" >10.1016/j.molcata.2006.09.017</a>

Result language
angličtina
Original language name
On the mutual interactions between noble metal crystallites and zeolitic supports and their impacts on catalysis
Original language description
The mutual metal?support interactions were studied in mordenite zeolite modified with 0.5, 2 and 5 wt.% platinum by impregnation or ion-exchange method. Each modification method led to different catalysts from the point of view of acidity. These interactions were thoroughly investigated by XPS, CO and pyridine FTIR spectroscopy, NH3-TPD and a model reaction (isomerization of n-butane). By XPS measurements and CO adsorption, it was observed that the Pt binding energy and the CO adsorption band increasedwith the acidity of the support. Simultaneously, a rearrangement on the strength of acid sites was recorded by pyridine-FTIR when the zeolites were modified by a metal function. Ultimately, such changes in acidity were translated into different catalyticperformances, mostly by suppressing or favoring cracking reactions. The interatomic model was examined and extrapolated to cover the effects that the metal particles have upon the support acidity.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Project
<a href="/en/project/FT-TA4%2F066" target="_blank" >FT-TA4/066: *Investigation of influence of motor fuels with biocomponents on the performance and emissions of compression-ignition and spark-ignition engines in the vehicle fleet of the Czech Republic.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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