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Article

Nickel Supported on AlCeO3 as a Highly Selective and Stable Catalyst for Hydrogen Production via the Glycerol Steam Reforming Reaction

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Department of Environmental and Pollution Control Engineering, Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Western Macedonia University of Applied Sciences, GR-50100 Kila, Greece
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School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
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Chemical and Environmental Engineering Department, Instituto de Nanociencia de Aragón (INA) and Instituto de Ciencia de Materiales de Aragón (ICMA), Universidad de Zaragoza-CSIC, 50018 Zaragoza, Spain
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Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBERBBN, 28029 Madrid, Spain
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The Surface Analysis Laboratory, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 4DL, UK
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Department of Mechanical Engineering, Khalifa University of Science and Technology, Abu Dhabi P.O. Box 127788, UAE
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Center for Catalysis and Separation, Khalifa University of Science and Technology, Abu Dhabi P.O. Box 127788, UAE
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Authors to whom correspondence should be addressed.
Catalysts 2019, 9(5), 411; https://doi.org/10.3390/catal9050411
Received: 8 April 2019 / Revised: 18 April 2019 / Accepted: 19 April 2019 / Published: 1 May 2019
(This article belongs to the Special Issue Ni-Containing Catalysts)
In 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. View Full-Text
Keywords: nickel catalysts; ceria; alumina; glycerol steam reforming; H2 production nickel catalysts; ceria; alumina; glycerol steam reforming; H2 production
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MDPI and ACS Style

Charisiou, N.D.; Siakavelas, G.I.; Dou, B.; Sebastian, V.; Hinder, S.J.; Baker, M.A.; Polychronopoulou, K.; Goula, M.A. Nickel Supported on AlCeO3 as a Highly Selective and Stable Catalyst for Hydrogen Production via the Glycerol Steam Reforming Reaction. Catalysts 2019, 9, 411. https://doi.org/10.3390/catal9050411

AMA Style

Charisiou ND, Siakavelas GI, Dou B, Sebastian V, Hinder SJ, Baker MA, Polychronopoulou K, Goula MA. Nickel Supported on AlCeO3 as a Highly Selective and Stable Catalyst for Hydrogen Production via the Glycerol Steam Reforming Reaction. Catalysts. 2019; 9(5):411. https://doi.org/10.3390/catal9050411

Chicago/Turabian Style

Charisiou, Nikolaos D., Georgios I. Siakavelas, Binlin Dou, Victor Sebastian, Steven J. Hinder, Mark A. Baker, Kyriaki Polychronopoulou, and Maria A. Goula 2019. "Nickel Supported on AlCeO3 as a Highly Selective and Stable Catalyst for Hydrogen Production via the Glycerol Steam Reforming Reaction" Catalysts 9, no. 5: 411. https://doi.org/10.3390/catal9050411

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