000097168 001__ 97168
000097168 005__ 20210121114546.0
000097168 0247_ $$2doi$$a10.1016/j.fuel.2019.115807
000097168 0248_ $$2sideral$$a112925
000097168 037__ $$aART-2019-112925
000097168 041__ $$aeng
000097168 100__ $$0(orcid)0000-0001-5266-398X$$aDi Stasi, Christian$$uUniversidad de Zaragoza
000097168 245__ $$aPhysically activated wheat straw-derived biochar for biomass pyrolysis vapors upgrading with high resistance against coke deactivation
000097168 260__ $$c2019
000097168 5060_ $$aAccess copy available to the general public$$fUnrestricted
000097168 5203_ $$aWheat straw-derived biochars (produced through slow pyrolysis at 500 degrees C and 0.1 MPa) were physically (with CO2) and chemically (with K2CO3) activated to assess their performance as renewable and low-cost catalysts for biomass pyrolysis vapors upgrading. Preliminary cracking experiments, which were carried out at 700 degrees C using a mixture of four representative model compounds, revealed a clear correlation between the volume of micropores of the catalyst and the total gas production, suggesting that physical activation up to a degree of burn-off of 40% was the most interesting activation route. Next, steam reforming experiments were conducted using the most microporous material to analyze the effect of both the bed temperature and gas hourly space velocity (GHSV) on the total gas production. The results showed a strong dependence between the bed temperature and the total gas production, with the best result obtained at the highest temperature (750 degrees C). On the other hand, the change in GHSV led to minor changes in the total gas yield, with a maximum achieved at 14500 h(-1). Under the best operating conditions deduced in the previous stages, the addition of CO2 into the feed gas stream (partial pressure of 20 kPa) resulted in a total gas production of 98% with a H-2/CO molar ratio of 2.16. This good result, which was also observed during the upgrading of the aqueous phase of a real biomass pyrolysis oil, was ascribed to the relatively high coke gasification rate, which refresh the active surface area preventing deactivation by coke deposition.
000097168 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-17R$$9info:eu-repo/grantAgreement/EC/H2020/721991/EU/Advanced Carbon Materials from Biowaste: Sustainable Pathways to Drive Innovative Green Technologies/ GreenCarbon$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 721991- GreenCarbon
000097168 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000097168 590__ $$a5.578$$b2019
000097168 591__ $$aENGINEERING, CHEMICAL$$b18 / 143 = 0.126$$c2019$$dQ1$$eT1
000097168 591__ $$aENERGY & FUELS$$b24 / 112 = 0.214$$c2019$$dQ1$$eT1
000097168 592__ $$a1.797$$b2019
000097168 593__ $$aChemical Engineering (miscellaneous)$$c2019$$dQ1
000097168 593__ $$aOrganic Chemistry$$c2019$$dQ1
000097168 593__ $$aFuel Technology$$c2019$$dQ1
000097168 593__ $$aEnergy Engineering and Power Technology$$c2019$$dQ1
000097168 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000097168 700__ $$aAlvira, Darío$$uUniversidad de Zaragoza
000097168 700__ $$0(orcid)0000-0001-6609-1601$$aGreco, Gianluca$$uUniversidad de Zaragoza
000097168 700__ $$0(orcid)0000-0001-7125-4997$$aGonzález, Belén$$uUniversidad de Zaragoza
000097168 700__ $$0(orcid)0000-0002-0118-3254$$aManya, Joan J.$$uUniversidad de Zaragoza
000097168 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000097168 7102_ $$15005$$2790$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Tecnologi. Medio Ambiente
000097168 773__ $$g255 (2019), 115807 [10 pp.]$$pFuel$$tFuel$$x0016-2361
000097168 8564_ $$s429503$$uhttps://zaguan.unizar.es/record/97168/files/texto_completo.pdf$$yPostprint
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000097168 909CO $$ooai:zaguan.unizar.es:97168$$particulos$$pdriver
000097168 951__ $$a2021-01-21-11:19:25
000097168 980__ $$aARTICLE