NO Conversion with NH3 by Catalysts Derived from Ti-MWW Layered Zeolites with Tailored Porosity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10507303" target="_blank" >RIV/00216208:11310/25:10507303 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=JSxoOLX1fZ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=JSxoOLX1fZ</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcc.5c06118" target="_blank" >10.1021/acs.jpcc.5c06118</a>
Alternative languages
Result language
angličtina
Original language name
NO Conversion with NH3 by Catalysts Derived from Ti-MWW Layered Zeolites with Tailored Porosity
Original language description
Acid-treated Ti-MCM-22 zeolite and its micromesoporous derivatives, ITQ-2-A and MCM-36-A, were hydrothermally synthesized and then modified with copper cations by the ion-exchange method. The samples were characterized with respect to their physicochemical properties, including composition (ICP-OES), structure (XRD, STEM, UV-vis DRS), texture (low-temperature N2-sorption), surface acidity (NH3-TPD), and copper reducibility (H2-TPR). Cu-functionalized zeolites showed enhanced catalytic activity compared to commercial V2O5-TiO2 catalysts. They were found to be active and selective catalysts for the NH3-SCR process, operating effectively in the range of 200-325 °C. NH3-SCR activity strongly depended on the opening of the framework, indicating the micromesoporous structure as an important factor influencing improved NO conversion with ammonia. The formation of NO2, essential for the fast-SCR process, was identified as a crucial step in the reaction mechanism responsible for the low-temperature reduction of nitrogen(II) oxide with ammonia.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
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 Physical Chemistry C
ISSN
1932-7447
e-ISSN
1932-7455
Volume of the periodical
129
Issue of the periodical within the volume
45
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
20234-20246
UT code for WoS article
001608559300001
EID of the result in the Scopus database
2-s2.0-105021400209