Effective hydrogen production from ethanol steam reforming using CoMg co-doped SiO2@Co1-xMgxO catalyst

In this study, the activities of core@shell-structured SiO2@Co1-xMgxO catalysts in ethanol steam reforming (ESR) were investigated, and the promotion effect of Mg upon H-2 production was assessed. The loading of SiO2@CoO with Mg resulted in an increase in ethanol conversion and H-2 yield with the concomitant suppression of carbon coke deposition and CO emission. Oxygen transfer from the MgO supporter (or improver) to the main cobalt catalytic species during ESR might play a role in maintaining the partially oxidized Co state. In longevity tests, the SiO2@Co1-xMgxO core@shell material, despite being reused three times, exhibited superior H-2 production for 100 h without structural collapse or coke formation. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.