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用水溶液沉淀法制备钼酸铁[Fe_2(MoO_4)_3]。用900～1100℃温度范围内获得的反应产物的热重法和X射线衍射法来研究石墨还原—碳化钼酸铁。又在700～800℃温度范围内研究了用一氧化碳的还原-碳化法。发现用石墨还原是通过产生铁和Magneli相而进行的,后者再还原成MoO_2和Fe_3Mo_3C,最后,在Fe_3Mo_3C消耗后,生成了Fe_2MoC。另一方面,用CO的还原-碳化,在生成MoO_2后,直接碳化成Mo_2C和Fe_2MoC,并未生成中间相Fe_3Mo_3C。
Ferric molybdate [Fe_2 (MoO_4) _3] was prepared by precipitation with aqueous solution. Graphite reduction-carbide iron molybdate was investigated by thermogravimetry and X-ray diffractometry of the reaction products obtained in the 900-1100 ° C temperature range. Also in the temperature range of 700 ~ 800 ℃ with the carbon monoxide reduction - carbonization method. It was found that graphite reduction was achieved by the generation of iron and Magneli phase, which was reduced to MoO_2 and Fe_3Mo_3C. Finally, Fe_2MoC was formed after Fe_3Mo_3C was consumed. On the other hand, with the reduction-carbonation of CO, MoO_2 is directly carbonized into Mo_2C and Fe_2MoC after the formation of MoO_2, and no mesophase Fe_3Mo_3C is formed.