Abstract
Effects of metal oxide addition on hydrogenation of carbon monoxide were investigated over chlorinecontaining magnetite (Cl/Fe3O4) catalysts in the slurry phases at 325°C, under 10atm, and with H2/CO=1. By addition of various metal oxides, the crystal size of magnetite and the XPS binding energy of the surface Fe decreased. A linear relationship between methane selectivity, or the ratio (P/O) of paraffin to olefin in the C2-C4 products, and electronegativity of M in the additives (MOx) was obtained. These results suggest that the added acidic oxides keep Fe of the catalysts in a low oxidation state and increase the hydrogenation activity of the catalysts. Thus, the role of chlorine in such catalysts with low P/O ratios was not explained in terms of its acidity, but in terms of its oxidative effect, maintaining the high oxidation state of Fe in the catalyst.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
