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dc.contributor.author
Faroldi, Betina María Cecilia  
dc.contributor.author
Lombardo, Eduardo Agustin  
dc.contributor.author
Cornaglia, Laura Maria  
dc.date.available
2018-09-20T19:08:40Z  
dc.date.issued
2009-11  
dc.identifier.citation
Faroldi, Betina María Cecilia; Lombardo, Eduardo Agustin; Cornaglia, Laura Maria; Surface properties and catalytic behavior of Ru supported on composite La2O3-SiO2 oxides; Elsevier Science; Applied Catalysis A: General; 369; 1-2; 11-2009; 15-26  
dc.identifier.issn
0926-860X  
dc.identifier.uri
http://hdl.handle.net/11336/60504  
dc.description.abstract
Binary La2O3-SiO2 supports were employed to obtain active, stable Ru catalysts with high dispersions for the dry reforming of methane. Supports with 15, 27, 40 and 50 wt. % of La2O3 were prepared by incipient wetness impregnation on SiO2. The Ru loading was 0.6 wt % for all catalysts. The solids were evaluated in a fixed-bed reactor under differential conditions. Previously, they were reduced at either 673 K or 823 K. The most active catalyst was Ru/La2O3(50)-SiO2. All the uncalcined formulations were stable after 100 hours on stream.<br />XRD, CO chemisorption, TPR, XPS, ISS and CO adsorption monitored by FTIR were employed to characterize the catalysts and the Ru species. XRD showed the presence of La2Si2O7 with low crystallinity in all the supports. By means of XPS and ISS, the formation of a surface La2Si2O7 phase was suggested for samples containing La2O3 up to 40 wt. %. Higher contents could lead to surface La2O3 particle growth.<br />The TOFCH4 values showed a minimum for the Ru/La2O3(40)-SiO2 solid in agreement with a lower metal-support interaction. The Ru/La2O3(50)-SiO2 catalyst exhibited the highest TOFCH4 for both reduction treatments. The differences in thermal stability of the CO adsorbed species on Ru supported on silica or on binary La2O3-SiO2 supports sustain that the presence of lanthanum influences the metal support-interaction and metal dispersion.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Binary Supports  
dc.subject
Ru  
dc.subject
Hydrogen Production  
dc.subject
Xps  
dc.subject
Iss  
dc.subject.classification
Otras Ingeniería Química  
dc.subject.classification
Ingeniería Química  
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Surface properties and catalytic behavior of Ru supported on composite La2O3-SiO2 oxides  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-08-14T14:32:54Z  
dc.journal.volume
369  
dc.journal.number
1-2  
dc.journal.pagination
15-26  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdan  
dc.description.fil
Fil: Faroldi, Betina María Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina  
dc.description.fil
Fil: Lombardo, Eduardo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina  
dc.description.fil
Fil: Cornaglia, Laura Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina  
dc.journal.title
Applied Catalysis A: General  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1016/j.apcata.2009.08.024