Siderite (FeCO3): Thermal Decomposition in Equilibrium with Graphite.
نویسندگان
چکیده
The thermal stability of siderite (FeCO(3)) was studied by two independent methods in which the oxygen fugacity of the gas phase was controlled by equilibration with graphite. Both series of experiments indicate that siderite decomposes stably to magnetite + graphite between 455 degrees and 465 degrees C at 500 to 2000 bars PCO2 + P(CO).
منابع مشابه
Jeq50187 871..879
Siderite (FeCO3) is commonly found in coal overburden and, when present, can cause interference in the determination of neutralization potential (NP). Under acidic testing conditions, FeCO3 reacts to neutralize acid, which contributes to the NP. However, continued weathering of FeCO3 (oxidation of Fe 21 and hydrolysis of Fe) produces a neutral to slightly acidic solution. The effects of hydroge...
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ورودعنوان ژورنال:
- Science
دوره 147 3663 شماره
صفحات -
تاریخ انتشار 1965