000079135 001__ 79135
000079135 005__ 20210126093424.0
000079135 0247_ $$2doi$$a10.1016/j.ijhydene.2018.04.151
000079135 0248_ $$2sideral$$a106566
000079135 037__ $$aART-2019-106566
000079135 041__ $$aeng
000079135 100__ $$0(orcid)0000-0001-8327-7256$$aLachén, J.$$uUniversidad de Zaragoza
000079135 245__ $$aProduction and purification of hydrogen by biogas combined reforming and steam-iron process
000079135 260__ $$c2019
000079135 5060_ $$aAccess copy available to the general public$$fUnrestricted
000079135 5203_ $$aCobalt ferrite and hematite with minor additives have been tested for production and purification of high purity hydrogen from a synthetic biogas by steam-iron process (SIP) in a fixed bed reactor. A catalyst based in nickel aluminate has been included in the bed of solids to enhance the rate of the reaction of methane dry reforming (MDR). The reductants resulting from MDR are responsible for reducing the oxides based on iron that will, in the following stage, be oxidized by steam to release hydrogen with less than 50 ppm of CO. Coke minimization along reduction stages forces to operate such reactors above 700 °C for reductions, and as low as 500 °C for oxidations to avoid coke gasification. To avoid problems such as reactor clogging by coke in reductions and/or contamination of hydrogen by gasification of coke along oxidations, steam in small proportions has been included in the feed with the aim of minimizing or even avoiding formation of carbonaceous depositions along the reduction stage of SIP. Since steam is an oxidant, it exerts an inhibiting effect upon reduction of the oxide, that slows down the efficiency of the process. It has been proved that co-feeding low proportions of steam with an equimolar mixture of CH4 and CO2 (simulating a poor heating value desulphurized biogas) is able to avoid coke deposition, allowing the operation of both, reductions and oxidations, in isothermal regime (700 °C). Empirical results have been contrasted with data found in literature for similar processes based in MDR and combined (or mixed) reforming process (CMR), concluding that the combination of MDR + SIP proposed in this work, taking apart economic aspects and complex engineering, shows similar yields towards hydrogen, but with the advantage of not requiring a subsequent purification process.
000079135 536__ $$9info:eu-repo/grantAgreement/ES/DGA/FSE$$9info:eu-repo/grantAgreement/ES/MINECO/BES-2014-067984$$9info:eu-repo/grantAgreement/ES/MINECO/CTQ2016-77277-R$$9info:eu-repo/grantAgreement/ES/MINECO/ENE2013-44350-R
000079135 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000079135 590__ $$a4.939$$b2019
000079135 591__ $$aELECTROCHEMISTRY$$b7 / 27 = 0.259$$c2019$$dQ2$$eT1
000079135 591__ $$aENERGY & FUELS$$b30 / 112 = 0.268$$c2019$$dQ2$$eT1
000079135 591__ $$aCHEMISTRY, PHYSICAL$$b48 / 159 = 0.302$$c2019$$dQ2$$eT1
000079135 592__ $$a1.141$$b2019
000079135 593__ $$aCondensed Matter Physics$$c2019$$dQ1
000079135 593__ $$aEnergy Engineering and Power Technology$$c2019$$dQ1
000079135 593__ $$aFuel Technology$$c2019$$dQ1
000079135 593__ $$aRenewable Energy, Sustainability and the Environment$$c2019$$dQ2
000079135 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000079135 700__ $$0(orcid)0000-0003-1940-9597$$aHerguido, J.$$uUniversidad de Zaragoza
000079135 700__ $$0(orcid)0000-0002-8383-4996$$aPeña, J.A.$$uUniversidad de Zaragoza
000079135 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000079135 773__ $$g44, 35 (2019), 19244-19254$$pInt. j. hydrogen energy$$tInternational Journal of Hydrogen Energy$$x0360-3199
000079135 8564_ $$s1105879$$uhttps://zaguan.unizar.es/record/79135/files/texto_completo.pdf$$yPostprint
000079135 8564_ $$s94877$$uhttps://zaguan.unizar.es/record/79135/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000079135 909CO $$ooai:zaguan.unizar.es:79135$$particulos$$pdriver
000079135 951__ $$a2021-01-26-09:30:57
000079135 980__ $$aARTICLE