000086404 001__ 86404
000086404 005__ 20200716101605.0
000086404 0247_ $$2doi$$a10.3390/catal9050411
000086404 0248_ $$2sideral$$a115095
000086404 037__ $$aART-2019-115095
000086404 041__ $$aeng
000086404 100__ $$aCharisiou, Nikolaos D.
000086404 245__ $$aNickel supported on AlCeO3 as a highly selective and stable catalyst for hydrogen production via the glycerol steam reforming reaction
000086404 260__ $$c2019
000086404 5060_ $$aAccess copy available to the general public$$fUnrestricted
000086404 5203_ $$aIn this study, a critical comparison between two low metal (Ni) loading catalysts is presented, namely Ni/Al2O3 and Ni/AlCeO3 for the glycerol steam reforming (GSR) reaction. The surface and bulk properties of the catalysts were evaluated using a plethora of techniques, such as N2 adsorption/desorption, Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscopy / Energy Dispersive X-Ray Spectroscopy (SEM/EDX, Transmission Electron Microscopy (TEM), CO2 and NH3-Temperature Programmed Desorption (TPD), and Temperature Programmed Reduction (H2-TPR). Carbon deposited on the catalyst’s surfaces was probed using Temperature Programmed Oxidation (TPO), SEM, and TEM. It is demonstrated that Ce-modification of Al2O3 induces an increase of the surface basicity and Ni dispersion. These features lead to a higher conversion of glycerol to gaseous products (60% to 80%), particularly H2 and CO2, enhancement of WGS reaction, and a higher resistance to coke deposition. Allyl alcohol was found to be the main liquid product for the Ni/AlCeO3 catalyst, the production of which ceases over 700 °C. It is also highly significant that the Ni/AlCeO3 catalyst demonstrated stable values for H2 yield (2.9-2.3) and selectivity (89-81%), in addition to CO2 (75-67%) and CO (23-29%) selectivity during a (20 h) long time-on-stream study. Following the reaction, SEM/EDX and TEM analysis showed heavy coke deposition over the Ni/Al2O3 catalyst, whereas for the Ni/AlCeO3 catalyst TPO studies showed the formation of more defective coke, the latter being more easily oxidized.
000086404 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000086404 590__ $$a3.52$$b2019
000086404 591__ $$aCHEMISTRY, PHYSICAL$$b65 / 158 = 0.411$$c2019$$dQ2$$eT2
000086404 592__ $$a0.722$$b2019
000086404 593__ $$aPhysical and Theoretical Chemistry$$c2019$$dQ2
000086404 593__ $$aCatalysis$$c2019$$dQ3
000086404 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000086404 700__ $$aSiakavelas, Georgios I.
000086404 700__ $$aDou, Binlin
000086404 700__ $$0(orcid)0000-0002-6873-5244$$aSebastian, Víctor$$uUniversidad de Zaragoza
000086404 700__ $$aHinder, Steven J.
000086404 700__ $$aBaker, Mark A.
000086404 700__ $$aPolychronopoulou, Kyriaki
000086404 700__ $$aGoula, Maria A.
000086404 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000086404 773__ $$g9, 5 (2019), 411 [21 pp.]$$pCatalysts$$tCATALYSTS$$x2073-4344
000086404 8564_ $$s1911963$$uhttps://zaguan.unizar.es/record/86404/files/texto_completo.pdf$$yVersión publicada
000086404 8564_ $$s108709$$uhttps://zaguan.unizar.es/record/86404/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000086404 909CO $$ooai:zaguan.unizar.es:86404$$particulos$$pdriver
000086404 951__ $$a2020-07-16-09:54:35
000086404 980__ $$aARTICLE