Effects of metal loading and support modification on the low-temperature steam reforming of ethanol (LTSRE) over the Ni–Sn/CeO2 catalysts

Seriyala, AK and Rao, A and Leclerc, C and Appari, S and Roy, B (2023) Effects of metal loading and support modification on the low-temperature steam reforming of ethanol (LTSRE) over the Ni–Sn/CeO2 catalysts. In: International Journal of Hydrogen Energy .

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Abstract

This article presents the effect of metal loading and support modification with MgO on low-temperature steam reforming of ethanol (LTSRE) over Ni–Sn/CeO2 catalysts prepare by a single-pot solution combustion synthesis (SCS) method. Atmospheric pressure activity study of these catalysts (0.5 g) is performed at different temperatures (200–400 °C), H2O:EtOH = 12: 1 mol ratio, and feed flow rate 0.1 ml/min. After 10 h TOS at 400 °C, NiSn(5)/CM12 catalyst with 5 wt.% total metal loading, optimal Sn (Ni:Sn = 14:1), and Ce:Mg = 1:2 mol ratio shows EtOH conversion 100% and H2 selectivity 70% with low coke deposition. Physicochemical characterizations (XRD, Raman, FESEM, TEM, and N2 adsorption-desorption) reveal that addition of MgO in CeO2 and an optimal amount of Sn decrease both Ni and support particle sizes while oxygen storage capacity (OSC) of the support increases (by XPS). Alkaline characteristics of MgO reduces support's acidity and improves active metal-support interaction, as evaluated by NH3-TPD and H2-TPR.

Item Type:	Journal Article
Publication:	International Journal of Hydrogen Energy
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd.
Keywords:	Ammonia; Atmospheric movements; Atmospheric pressure; Atmospheric temperature; Catalyst activity; Catalyst selectivity; Combustion synthesis; Ethanol; Hydrogen; Magnesia; Steam reforming; Tin, Effect of tin composition; Lows-temperatures; Metal loadings; Metal-supports; Ni�sn/CeO2�MgO catalyst; Solution combustion synthesis; Support modification; Varying metal loading; ]+ catalyst, Cerium oxide
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	16 Feb 2023 05:24
Last Modified:	16 Feb 2023 05:24
URI:	https://eprints.iisc.ac.in/id/eprint/80309

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