Studies on the decomposition of carbon dioxide into carbon with oxygen-deficient magnetite I. Preparation, characterization of magnetite, and its activity of decomposing carbon dioxide
作者： Chun-lei Zhang , Shuang Li , Li-jun Wang , Tong-hao Wu , Shao-yi Peng
DOI: 10.1016/S0254-0584(99)00169-8
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摘要: The magnetite Fe3O4+delta (0 less than or equal to delta 0.5) of different particle sizes were prepared using wet-heating oxidation method, supercritical fluid dry method and ferrous oxalate ferric high-temperature decomposition their structure characterized by XRD, Mossbauer spectra, IR spectra STEM. oxygen-deficient < 1) was H-2 reduction at 573 K its properties (lattice constant, magnetism, stability, ability) studied ih detail. activity decomposing CO2 with compared the effects degree oxygen-deficiency, reaction time, temperature on into carbon investigated. It is found that oxygen in incorporated form O2- reduced carbon, same time Fe3O4-delta converted stoichiometric Fe3O4. smaller size is, larger higher is. (C) 2000 Elsevier Science S.A. All rights reserved.
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