Lee, Myung Suk Lee, Joon Yeob Lee, Dae-Won Moon, Dong Ju Lee, Kwan-Young 2024-01-20T14:30:33Z 2024-01-20T14:30:33Z 2021-09-04 2012-08 0360-3199 https://pubs.kist.re.kr/handle/201004/129044 In this study, the effect of the addition of Zn to a NiFe2O4 catalyst was investigated for a high-temperature shift (HTS) of the natural gas reformate under the assumption that no external steam was added. In our previous study, NiFe2O4 proved to be a notable HTS catalyst, but it produced methane as a by-product in the presence of such a highly reductive reformate. In this study, we found that the addition of Zn to NiFe2O4 was effective in suppressing methanation as well as in promoting HTS activity. Such improvements were expected to be related to the enhanced redox property of the inverse-spinel species included in the catalyst. To elucidate the effects of Zn addition, inductively coupled plasma spectroscopy (ICP), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermo-gravimetric analysis under a CO gas atmosphere (CO-TGA), and temperature-programmed reduction of H-2 (H-2-TPR) were performed. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD IRON-BASED CATALYSTS CR-FREE HYDROGEN CO PERFORMANCE GENERATION COPPER The effect of Zn addition into NiFe2O4 catalyst for high-temperature shift reaction of natural gas reformate assuming no external steam addition Article 10.1016/j.ijhydene.2012.04.130 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.37, no.15, pp.11218 - 11226 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 37 15 11218 11226 scie scopus 000307600700025 2-s2.0-84863620739 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article IRON-BASED CATALYSTS CR-FREE HYDROGEN CO PERFORMANCE GENERATION COPPER Water gas shift reaction High-temperature shift Methanation Redox property Zn/Ni/Fe catalyst