75974 20200117221603.0 doi 10.3390/nano8110931 sideral 109115 ART-2018-109115 eng Polychronopoulou, K. The effect of Ni addition onto a Cu-based ternary support on the H2 production over glycerol steam reforming reaction 2018 Access copy available to the general public Unrestricted In the present study, Ni/Ce-Sm-xCu (x = 5, 7, 10 at.%) catalysts were prepared using microwave radiation coupled with sol-gel and followed by wetness impregnation method for the Ni incorporation. Highly dispersed nanocrystallites of CuO and NiO on the Ce-Sm-Cu support were found. Increase of Cu content seems to facilitate the reducibility of the catalyst according to the H2 temperature-programmed reduction (H2-TPR). All the catalysts had a variety of weak, medium and strong acid/basic sites that regulate the reaction products. All the catalysts had very high XC3H8O3 for the entire temperature (400–750¿ C) range; from ˜84% at 400¿ C to ˜94% at 750¿ C. Ni/Ce-Sm-10Cu catalyst showed the lowest XC3H8O3-gas implying the Cu content has a detrimental effect on performance, especially between 450–650¿ C. In terms of H2 selectivity (SH2) and H2 yield (YH2), both appeared to vary in the following order: Ni/Ce-Sm-10Cu > Ni/Ce-Sm-7Cu > Ni/Ce-Sm-5Cu, demonstrating the high impact of Cu content. Following stability tests, all the catalysts accumulated high amounts of carbon, following the order Ni/Ce-Sm-5Cu < Ni/Ce-Sm-7Cu < Ni/Ce-Sm-10Cu (52, 65 and 79 wt.%, respectively) based on the thermogravimetric analysis (TGA) studies. Raman studies showed that the incorporation of Cu in the support matrix controls the extent of carbon graphitization deposited during the reaction at hand. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 4.034 2018 MATERIALS SCIENCE, MULTIDISCIPLINARY 71 / 293 = 0.242 2018 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 39 / 94 = 0.415 2018 Q2 T2 0.896 2018 Materials Science (miscellaneous) 2018 Q1 Chemical Engineering (miscellaneous) 2018 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Charisiou, N. Papageridis, K. (orcid)0000-0002-6873-5244 Sebastian, V. Universidad de Zaragoza Hinder, S. Dabbawala, A. Alkhoori, A. Baker, M. Goula, M. 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 8, 11 (2018), 931 [27 pp] Nanomaterials (Basel) Nanomaterials 2079-4991 682101 http://zaguan.unizar.es/record/75974/files/texto_completo.pdf Versión publicada 100210 http://zaguan.unizar.es/record/75974/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:75974 articulos driver 2020-01-17-21:44:22 ARTICLE