Nanosponge hierarchical micro-mesoporous MFI zeolites as a high-performance catalyst for the hydroamination of methyl acrylate with aniline
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F22%3A10453373" target="_blank" >RIV/00216208:11310/22:10453373 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=swM9k3lmhO" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=swM9k3lmhO</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.micromeso.2022.112087" target="_blank" >10.1016/j.micromeso.2022.112087</a>
Alternative languages
Result language
angličtina
Original language name
Nanosponge hierarchical micro-mesoporous MFI zeolites as a high-performance catalyst for the hydroamination of methyl acrylate with aniline
Original language description
Zeolites catalyze the hydroamination of alkenes, alkynes and dienes, yielding valuable amines, enamines and imines with high efficiency and chemoselectivity (i.e., Markovnikov or anti-Markovnikov products) thanks to the architecture of their pore system and tunable acidity. However, their micropores may impose mass-transfer constraints on reaction rates. Nevertheless, the high external surface area of hierarchical micro-mesoporous zeolites should enable them to outperform conventional zeolites. To test our hypothesis, we compared the activity of hierarchical MFI zeolites of different crystal morphologies (i.e., nanosponge, nanosheet and microcrystalline desilicated samples) with that of conventional medium- (MFI) and large-pore (MOR and Beta) zeolites in the hydroamination of methyl acrylate with aniline. The results showed that nanosponge MFI had the highest activity (TOF = 32.9 h(-1)), reaching 57% yield of the anti-Markovnikov product N-[2-(methoxycarbonyl)ethyl] aniline. Furthermore, our kinetic study revealed a pseudo-second-order rate law with respect to aniline over the most active nanosponge MFI catalyst, with an apparent activation energy of 68.9 kJ/mol. The high external surface of this catalyst (371 m2/g) and its developed inter-crystalline mesopores (4.8 nm) suggest a kineticdriven hydroamination reaction. Therefore, hierarchical nanosponge aluminosilicate MFI zeolites stand out as promising heterogeneous catalysts of hydroamination reactions involving bulky substrates.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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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
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Microporous and Mesoporous Materials
ISSN
1387-1811
e-ISSN
1873-3093
Volume of the periodical
341
Issue of the periodical within the volume
August
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
11
Pages from-to
112087
UT code for WoS article
000830080100002
EID of the result in the Scopus database
2-s2.0-85133589822