Ιδρυματικό Αποθετήριο [SANDBOX]
Πολυτεχνείο Κρήτης
EN  |  EL

Αναζήτηση

Πλοήγηση

Ο Χώρος μου

Ethyl acetate abatement on copper catalysts supported on ceria doped with rare earth oxides

Carabineiro, Sónia Alexandra Correia, Konsolakis Michail, Marnellos, Georges E, Asad Muhammad Faizan, Soares Olívia Salomé Gonçalves Pinto, Tavares Pedro Bandeira, Pereira Manuel Fernando R., Orfão, José Joaquim de Melo, Figueiredo José Luís

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/7D3A4A52-8218-4A6A-9597-3BF8DF6E47CF-
Αναγνωριστικόhttps://www.mdpi.com/1420-3049/21/5/644-
Αναγνωριστικόhttps://doi.org/10.3390/molecules21050644-
Γλώσσαen-
Μέγεθος20 pagesen
ΤίτλοςEthyl acetate abatement on copper catalysts supported on ceria doped with rare earth oxidesen
ΔημιουργόςCarabineiro, Sónia Alexandra Correiaen
ΔημιουργόςKonsolakis Michailen
ΔημιουργόςΚονσολακης Μιχαηλel
ΔημιουργόςMarnellos, Georges Een
ΔημιουργόςAsad Muhammad Faizanen
ΔημιουργόςSoares Olívia Salomé Gonçalves Pintoen
ΔημιουργόςTavares Pedro Bandeiraen
ΔημιουργόςPereira Manuel Fernando R.en
ΔημιουργόςOrfão, José Joaquim de Meloen
ΔημιουργόςFigueiredo José Luísen
ΕκδότηςMDPIen
ΠερίληψηDifferent lanthanide (Ln)-doped cerium oxides (Ce0.5 Ln0.5 O1.75, where Ln: Gd, La, Pr, Nd, Sm) were loaded with Cu (20 wt. %) and used as catalysts for the oxidation of ethyl acetate (EtOAc), a common volatile organic compound (VOC). For comparison, both Cu-free (Ce-Ln) and supported Cu (Cu/Ce-Ln) samples were characterized by N2 adsorption at -196°C, scanning/transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and temperature programmed reduction in H2. The following activity sequence, in terms of EtOAc conversion, was found for bare supports: CeO2 ≈ Ce0.5Pr0.5O1.75 > Ce0.5Sm0.5O1.75 > Ce0.5Gd0.5O1.75 > Ce0.5Nd0.5O1.75 > Ce0.5La0.5O1.75. Cu addition improved the catalytic performance, without affecting the activity order. The best catalytic performance was obtained for Cu/CeO2 and Cu/Ce0.5Pr0.5O1.75 samples, both achieving complete EtOAc conversion below ca. 290°C. A strong correlation was revealed between the catalytic performance and the redox properties of the samples, in terms of reducibility and lattice oxygen availability. No particular correlation between the VOC oxidation performance and textural characteristics was found. The obtained results can be explained in terms of a Mars-van Krevelen type redox mechanism involving the participation of weakly bound (easily reduced) lattice oxygen and its consequent replenishment by gas phase oxygen.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2018-10-16-
Ημερομηνία Δημοσίευσης2016-
Θεματική ΚατηγορίαCopper (Cu)-based catalystsen
Θεματική ΚατηγορίαEthyl acetate oxidationen
Θεματική ΚατηγορίαMixed oxidesen
Θεματική ΚατηγορίαRare earth oxidesen
Θεματική ΚατηγορίαVolatile organic compounds (VOCs)en
Βιβλιογραφική ΑναφοράS. A. C. Carabineiro, M. Konsolakis, G. E.-N. Marnellos, M. F. Asad, O. S. G. P. Soares, P. B. Tavares, M. F. R. Pereira, J. J. De Melo Órfão and J. L. Figueiredo, "Ethyl acetate abatement on copper catalysts supported on ceria doped with rare earth oxides," Molecules, vol. 21, no. 5, May 2016. doi: 10.3390/molecules21050644en

Διαθέσιμα αρχεία

Υπηρεσίες

Στατιστικά