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dc.contributor.authorGil, Maria V
dc.contributor.authorFermoso, Javier
dc.contributor.authorRubiera, Fernando
dc.contributor.authorChen, De
dc.date.accessioned2018-05-08T12:03:30Z
dc.date.available2018-05-08T12:03:30Z
dc.date.created2015-01-09T12:39:59Z
dc.date.issued2014
dc.identifier.citationCatalysis Today. 2014, 242 19-34.nb_NO
dc.identifier.issn0920-5861
dc.identifier.urihttp://hdl.handle.net/11250/2497592
dc.description.abstractHigh-purity H2 was produced by the sorption enhanced steam reforming (SESR) of acetic acid, a model compound of bio-oil obtained from the fast pyrolysis of biomass, in a fluidized bed reactor. A Pd/Ni–Co hydrotalcite-like material (HT) and dolomite were used as reforming catalyst and CO2 sorbent, respectively. The hydrogen yield and purity were optimized by response surface methodology (RSM) and the combined effect of the reaction temperature (T), steam-to-carbon molar ratio in the feed (steam/C) and weight hourly space velocity (WHSV) upon the sorption enhanced steam reforming process was analyzed. T was studied between 475 and 675 °C, steam/C ratio between 1.5 and a 4.5 mol/mol and WHSV between 0.893 and 2.679 h−1. H2 yield, H2 selectivity and H2 purity, as well as the CH4, CO and CO2 concentrations in the effluent gas, were assessed. The operating temperature proved to be the variable that had the greatest effect on the response variables studied, followed by the WHSV and the steam/C ratio. The results show that the H2 yield, H2 selectivity and H2 purity increased, while the CH4, CO and CO2 concentrations decreased, concurrently with the temperature up to around 575–625 °C. Higher values of the steam/C ratio and lower WHSV values favored the H2 yield, H2 selectivity and H2 purity, and reduced the CH4 concentration. It was found that the SESR of acetic acid at atmospheric pressure and 560 °C, with a steam/C ratio of 4.50 and a WHSV of 0.893 h–1 gave the highest H2 yield of 92.00%, with H2 purity of 99.53% and H2 selectivity of 99.92%, while the CH4, CO and CO2 concentrations remained low throughout (0.04%, 0.06% and 0.4%, respectively). The results also suggested that a slow CO2 capture rate led to a poor level of hydrogen production when the SESR process was carried out at low temperatures, although this can be improved by increasing the sorbent/catalyst ratio in the fluidized bed.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.titleH2 production by sorption enhanced steam reforming of biomass-derived bio-oil in a fluidized bed reactor: An assessment of the effect of operation variables using response surface methodologynb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber19-34nb_NO
dc.source.volume242nb_NO
dc.source.journalCatalysis Todaynb_NO
dc.identifier.doi10.1016/j.cattod.2014.04.018
dc.identifier.cristin1193968
dc.relation.projectNorges forskningsråd: 243749nb_NO
dc.description.localcodeThis article will not be available due to copyright restrictions (c) 2014 by Elseviernb_NO
cristin.unitcode194,66,30,0
cristin.unitnameInstitutt for kjemisk prosessteknologi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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