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Molecules

Title:		Ethyl Acetate Abatement on Copper Catalysts Supported on Ceria Doped with Rare Earth Oxides
Author(s):		Carabineiro SA; Konsolakis M; Marnellos GE; Asad MF; Soares OS; Tavares PB; Pereira MF; Orfao JJ; Figueiredo JL;
Address:		"Laboratorio de Catalise e Materiais (LCM), Laboratorio Associado LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal. sonia.carabineiro@fe.up.pt. School of Production Engineering and Management, Technical University of Crete, 73100 Chania, Greece. mkonsol@science.tuc.gr. Department of Mechanical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece. gmarnellos@uowm.gr. Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, GR-57001 Thessaloniki, Greece. gmarnellos@uowm.gr. Laboratorio de Catalise e Materiais (LCM), Laboratorio Associado LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal. faizan_asad@hotmail.com. Laboratorio de Catalise e Materiais (LCM), Laboratorio Associado LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal. salome.soares@fe.up.pt. CQVR-Centro de Quimica-Vila Real, Departamento de Quimica, Universidade de Tras-os-Montes e Alto Douro, 5001-911 Vila Real, Portugal. ptavares@utad.pt. Laboratorio de Catalise e Materiais (LCM), Laboratorio Associado LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal. fpereira@fe.up.pt. Laboratorio de Catalise e Materiais (LCM), Laboratorio Associado LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal. jjmo@fe.up.pt. Laboratorio de Catalise e Materiais (LCM), Laboratorio Associado LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal. jlfig@fe.up.pt"
Journal Title:		Molecules
Year:		2016
Volume:		20160517
Issue:		5
Page Number:		-
DOI:		10.3390/molecules21050644
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"Different lanthanide (Ln)-doped cerium oxides (Ce0.5Ln0.5O1.75, 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 N(2) adsorption at -196 degrees C, scanning/transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and temperature programmed reduction in H(2). The following activity sequence, in terms of EtOAc conversion, was found for bare supports: CeO(2) approximately 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/CeO(2) and Cu/Ce0.5Pr0.5O1.75 samples, both achieving complete EtOAc conversion below ca. 290 degrees 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. Nuo 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"
Keywords:		"Acetates/*chemistry Adsorption *Catalysis Cerium/*chemistry Copper/chemistry Metals, Rare Earth/chemistry Oxygen/chemistry Volatile Organic Compounds/*chemistry copper (Cu)-based catalysts ethyl acetate oxidation mixed oxides rare earth oxides volatile or;"
Notes:		"MedlineCarabineiro, Sonia Alexandra Correia Konsolakis, Michalis Marnellos, George Emmanouil-Nontas Asad, Muhammad Faizan Soares, Olivia Salome Goncalves Pinto Tavares, Pedro Bandeira Pereira, Manuel Fernando Ribeiro Orfao, Jose Joaquim de Melo Figueiredo, Jose Luis eng Switzerland 2016/05/20 Molecules. 2016 May 17; 21(5):644. doi: 10.3390/molecules21050644"