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dc.contributor.authorSouza, Guilherme dept_BR
dc.contributor.authorMarcilio, Nilson Romeupt_BR
dc.contributor.authorPérez Lopez, Oscar Williampt_BR
dc.date.accessioned2015-04-23T01:59:03Zpt_BR
dc.date.issued2014pt_BR
dc.identifier.issn1516-1439pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/115525pt_BR
dc.description.abstractM-Co-Al (M = Ca, La, Li or Mg) materials were synthesised by co-precipitation and investigated for dry reforming of methane. Thermogravimetry, temperature-programmed oxidation, reduction and CO2 desorption, specific area and X-ray diffraction were utilised for characterisation. Activity tests were conducted at atmospheric pressure, temperatures between 400-550°C , CH4/CO2 molar ratio of 1 and GHSV of 6000 NmL CH4·g–1·h–1. The partial substitution of Co by a third element increased the area and changed the acid/base properties, reducibility and crystallinity of the oxides. These modifications resulted in higher activity for dry reforming of methane, mainly related to the decrease in the acidity of the promoted materials and, consequently, lower carbon formation. The Li‑modified sample presented the lowest coke deposition due to the increase in stronger basic sites. The Mg-promoted catalyst exhibited the best activity performance. This depicts the enhancement in the reducibility and acid/base properties found in the MgCoAl sample.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMaterials research : ibero-american journal of materials. São Carlos. Vol. 17, n. 4 (July/Aug. 2014), p. 1047-1055pt_BR
dc.rightsOpen Accessen
dc.subjectÓxidos mistospt_BR
dc.subjectDry reforming of methaneen
dc.subjectMetanopt_BR
dc.subjectCo-based catalysten
dc.subjectCarbon depositionen
dc.subjectCatálisept_BR
dc.subjectPrecipitation methoden
dc.subjectMixed oxidesen
dc.titleDry reforming of methane at moderate temperatures over modified Co-Al Co-precipitated catalystspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000941463pt_BR
dc.type.originNacionalpt_BR


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