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http://hdl.handle.net/10773/19684
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DC Field | Value | Language |
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dc.contributor.author | Gamelas, J. A. F. | pt |
dc.contributor.author | Oliveira, F. | pt |
dc.contributor.author | Evtyugina, M. G. | pt |
dc.contributor.author | Portugal, I. | pt |
dc.contributor.author | Evtuguin, D. V. | pt |
dc.date.accessioned | 2017-12-07T19:21:24Z | - |
dc.date.issued | 2016 | pt |
dc.identifier.issn | 0926-860X | pt |
dc.identifier.uri | http://hdl.handle.net/10773/19684 | - |
dc.description.abstract | Cellulose/silica hybrid material produced by a sol-gel method from cellulosic fibres and silica precursors (tetraethoxysilane and 3-aminopropyltriethoxysilane) was functionalized with alpha-[SiW9O37Ru3III(H2O)(x)Cl3-x]((10-x)-) (Ru-POM), and thoroughly characterised by C-13 and Si-29 solid state NMR, FTIR spectroscopy, UV-vis reflectance spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy (SEM), and chemical analysis. The supported Ru-POM exhibited catalytic activity for the gas phase heterogeneous aerobic oxidation of formaldehyde (ca. 830 ppm in polluted air) at room temperature, in a packed-bed reactor operating at a linear velocity ca. 0.33 m/s and ca. 0.5 s residence time. Maximum formaldehyde uptake was 1.10 g/min per kg of hybrid material doped with Ru-POM (ca. 1.4% w/w). More than 400 turnovers were achieved without significant loss of catalytic activity and the only detected oxidation products of formaldehyde were carbon dioxide and water. A plausible mechanism for the catalytic oxidation of formaldehyde by supported Ru-POM has been proposed and includes formaldehyde oxidation in oxygenated ruthenium complex. (C) 2015 Elsevier B.V. All rights reserved. | pt |
dc.language.iso | eng | pt |
dc.publisher | ELSEVIER SCIENCE BV | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/132936/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147332/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | AEROBIC OXIDATION | pt |
dc.subject | ENVIRONMENTAL APPLICATIONS | pt |
dc.subject | MOLECULAR-OXYGEN | pt |
dc.subject | SILICA | pt |
dc.subject | CLUSTERS | pt |
dc.subject | CHEMISTRY | pt |
dc.title | Catalytic oxidation of formaldehyde by ruthenium multisubstituted tungstosilicic polyoxometalate supported on cellulose/silica hybrid | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 8 | pt |
degois.publication.lastPage | 16 | pt |
degois.publication.title | APPLIED CATALYSIS A-GENERAL | pt |
degois.publication.volume | 509 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.relation.publisherversion | 10.1016/j.apcata.2015.10.003 | pt |
dc.identifier.doi | 10.1016/j.apcata.2015.10.003 | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Catalytic oxidation of formaldehyde by ruthenium multisubstituted tungstosilicic polyoxometalate supported on cellulosesilica hybrid_10.1016j.apcata.2015.10.003.pdf | 797.92 kB | Adobe PDF |
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