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http://hdl.handle.net/10261/11556
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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Álvarez Rodríguez, Patricia | - |
dc.contributor.author | Menéndez López, Rosa María | - |
dc.contributor.author | Granda Ferreira, Marcos | - |
dc.date.accessioned | 2009-03-13T07:19:25Z | - |
dc.date.available | 2009-03-13T07:19:25Z | - |
dc.date.issued | 2008-03-14 | - |
dc.identifier.citation | Journal of Analytical and Applied Pyrolysis 82(1): 151-157 (2008) | en_US |
dc.identifier.issn | 0165-2370 | - |
dc.identifier.uri | http://hdl.handle.net/10261/11556 | - |
dc.description | 7 pages, 8 figures, 3 tables. -- Printed version published May 2008 | en_US |
dc.description.abstract | Lignocellulose–pitch-based composites carbonized at 1000 °C were easily prepared by blending lignocellulose with pretreated pitch in a proportion of 50:50 wt.%. The pretreatment of the pitch was carried out by thermal treatment at temperatures of 250 and 350 °C, both in the absence and in the presence of 10 wt.% of alumina of different surface activities (acid, neutral and basic). The structural and mechanical properties of the composites, evaluated by means of density/porosity determinations, optical microscopy and flexural strength, were found to be enhanced by the presence of alumina. The effects of the addition of alumina in the composite were evaluated by means of thermogravimetric analyses. The results indicate that alumina surface activity plays an important role in the interactions between the composite components. Neutral alumina has the greatest effect during the pretreatment, while acid alumina favors lignocellulose–pitch interactions during the processing of the composite. These effects are more pronounced when the pretreatment is performed at 350 °C. Lignocellulose–pitch-based composites with a water density of not, vert, similar1.75 g cm−3, a porosity of not, vert, similar30 vol.% and a flexural strength of not, vert, similar30 MPa can be obtained when the pitch is pretreated in the presence of neutral alumina. | en_US |
dc.description.sponsorship | The authors would like to thank REPSOL YPF for the financial support provided. P. Álvarez also thanks MEC for her Juan de la Cierva research grant. | en_US |
dc.format.extent | 22195 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | closedAccess | en_US |
dc.subject | Lignocellulose | en_US |
dc.subject | Petroleum pitch | en_US |
dc.subject | Alumina treatment | en_US |
dc.subject | Pyrolysis | en_US |
dc.subject | Composite | en_US |
dc.title | The effect of alumina surface activity on the properties of lignocellulose/pitch-Al2O3 composites | en_US |
dc.type | artículo | en_US |
dc.identifier.doi | 10.1016/j.jaap.2008.03.002 | - |
dc.description.peerreviewed | Peer reviewed | en_US |
dc.relation.publisherversion | http://dx.doi.org/10.1016/j.jaap.2008.03.002 | en_US |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | No Fulltext | - |
item.languageiso639-1 | en | - |
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