000096830 001__ 96830 000096830 005__ 20201124104757.0 000096830 0247_ $$2doi$$a10.3390/catal9080676 000096830 0248_ $$2sideral$$a115019 000096830 037__ $$aART-2019-115019 000096830 041__ $$aeng 000096830 100__ $$aCharisiou, Nikolaos D. 000096830 245__ $$aThe relationship between reaction temperature and carbon deposition on nickel catalysts based on al2o3, zro2 or sio2 supports during the biogas dry reforming reaction 000096830 260__ $$c2019 000096830 5060_ $$aAccess copy available to the general public$$fUnrestricted 000096830 5203_ $$aThe tackling of carbon deposition during the dry reforming of biogas (BDR) necessitates research of the surface of spent catalysts in an effort to obtain a better understanding of the effect that different carbon allotropes have on the deactivation mechanism and correlation of their formation with catalytic properties. The work presented herein provides a comparative assessment of catalytic stability in relation to carbon deposition and metal particle sintering on un-promoted Ni/Al2O3, Ni/ZrO2 and Ni/SiO2 catalysts for different reaction temperatures. The spent catalysts were examined using thermogravimetric analysis (TGA), Raman spectroscopy, high angle annular dark field scanning transmission electron microscopy (STEM-HAADF) and X-ray photoelectron spectroscopy (XPS). The results show that the formation and nature of carbonaceous deposits on catalytic surfaces (and thus catalytic stability) depend on the interplay of a number of crucial parameters such as metal support interaction, acidity/basicity characteristics, O2– lability and active phase particle size. When a catalytic system possesses only some of these beneficial characteristics, then competition with adverse effects may overshadow any potential benefits. 000096830 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000096830 590__ $$a3.52$$b2019 000096830 591__ $$aCHEMISTRY, PHYSICAL$$b65 / 159 = 0.409$$c2019$$dQ2$$eT2 000096830 592__ $$a0.722$$b2019 000096830 593__ $$aPhysical and Theoretical Chemistry$$c2019$$dQ2 000096830 593__ $$aCatalysis$$c2019$$dQ3 000096830 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000096830 700__ $$aDouvartzides, Savvas L. 000096830 700__ $$aSiakavelas, Georgios I. 000096830 700__ $$aTzounis, Lazaros 000096830 700__ $$0(orcid)0000-0002-6873-5244$$aSebastian, Victor$$uUniversidad de Zaragoza 000096830 700__ $$aStolojan, Vlad 000096830 700__ $$aHinder, Steven J. 000096830 700__ $$aBaker, Mark A. 000096830 700__ $$aPolychronopoulou, Kyriaki 000096830 700__ $$aGoula, María A. 000096830 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química 000096830 773__ $$g9, 8 (2019), 676 [22 pp]$$pCatalysts$$tCATALYSTS$$x2073-4344 000096830 8564_ $$s2358135$$uhttps://zaguan.unizar.es/record/96830/files/texto_completo.pdf$$yVersión publicada 000096830 8564_ $$s457976$$uhttps://zaguan.unizar.es/record/96830/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000096830 909CO $$ooai:zaguan.unizar.es:96830$$particulos$$pdriver 000096830 951__ $$a2020-11-22-12:40:18 000096830 980__ $$aARTICLE