Sol-gel preparation of alumina stabilized rare earth areo- and xerogels and their use as oxidation catalysts
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10288969" target="_blank" >RIV/00216208:11320/14:10288969 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jcis.2014.02.004" target="_blank" >http://dx.doi.org/10.1016/j.jcis.2014.02.004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jcis.2014.02.004" target="_blank" >10.1016/j.jcis.2014.02.004</a>
Alternative languages
Result language
angličtina
Original language name
Sol-gel preparation of alumina stabilized rare earth areo- and xerogels and their use as oxidation catalysts
Original language description
A new sal-gel synthesis route for rare earth (Ce and Pr) alumina hybrid aero- and xerogels is presented which is based on the so-called epoxide addition method. The resulting materials are characterized by TEM, XRD and nitrogen adsorption. The results reveal a different crystallization behavior for the praseodymia/alumina and the ceria/alumina gel. Whereas the first remains amorphous until 875 degrees C, small ceria domains form already after preparation in the second case which grow with increasing calcination temperature. The use of the calcined gels as CO oxidation catalysts was studied in a quartz tube (lab) reactor and in a (slit) microreactor and compared to reference catalysts consisting of the pure rare earth oxides. The Ce/Al hybrid gels exhibit a good catalytic activity and a thermal stability against sintering which was superior to the investigated reference catalyst. In contrast, the Pr/Al hybrid gels show lower CO oxidation activity which, due to the formation of PrAlO3, d
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LD11047" target="_blank" >LD11047: Model Systems of Nanostructured Bimetallic Materials for Enviromental Applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Colloid and Interface Science
ISSN
0021-9797
e-ISSN
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Volume of the periodical
422
Issue of the periodical within the volume
květen
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
71-78
UT code for WoS article
000334652400011
EID of the result in the Scopus database
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