Dry Reforming of Methane over Ni–Fe–Al Catalysts Prepared by Solution Combustion Synthesis

• DOI: 10.1021/acs.iecr.3c00272
• Publication Date: 2023-07-18T04:17:40Z
• Authors: Alua M. Manabayeva; Päivi Mäki-Arvela; Zuzana Vajglová; Mark Martinéz-Klimov; Teija Tirri; Tolkyn S. Baizhum...; Valentina P. Grig...; Manapkhan Zhumabek; Yermek A. Aubakirov; Irina L. Simakova; Dmitry Yu. Murzin; Svetlana A. Tunga...
• Keywords: Bimetallic strip; Thermogravimetric analysis; Physisorption; Carbon dioxide reforming

Dry reforming of methane (DRM) is a promising method to utilize two greenhouse gases, such as CH4 and CO2, produce synthesis gas. In the current work, both monometallic Ni bimetallic Ni–Fe catalysts with different Fe/Ni molar ratios, synthesized by solution combustion (SCS) in DRM, were investigated using feed ratio CH4/CO2/Ar 1:1:1 at 600–900 °C. The characterized several physicochemical techniques X-ray diffraction (XRD), scanning electron microscopy energy-dispersive (SEM-EDX) spectroscopy, transmission (TEM), CHNS, N2 physisorption, H2-TPR, O2-TPO, NH3-TPD, thermogravimetric analysis (TGA). One highest hydrogen yields 81% was obtained 93% conversion 94% CO2 for 15Ni–5Fe–30Al catalyst, which contained, according XRD, NiAl2O4 spinel metallic phases. phase decomposed during reaction, while Ni3Fe alloy formed. Catalysts higher exhibited lower contained an inactive FeAl2O4 spinel. Rather stable CO H2 experiment 20 h time-on-stream.