Abstract
Three samples of coke produced from coal from a mine in the municipality of Samacá, department of Boyacá, Colombia, were studied essentially with Mössbauer spectroscopy. The samples were treated with NaOH 5mol L-1 in order to increase the proportion of iron oxides, by selectively dissolving silicate minerals and any remaining gibbsite, before the physical analysis. Room temperature Mössbauer data revealed that all samples do contain major proportions (> 50 % of the relative subspectral area) of hematite along with (super) paramagnetic species as ironbearing chemical compounds. The superparamagnetic contribution may be due to very fine grains of iron oxides, including nanometric hematite.
Proceedings of the thirteenth Latin American Conference on the Applications of the Mössbauer Effect, (LACAME 2012), Medellín, Columbia, 11–16 November 2012.
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Serrano, W.A.P., Lima, D.Q., Fabris, J.D. (2013). Mössbauer analysis of coal coke samples from Samacá, Boyacá, Colombia. In: Meneses, C.A.B., Caetano, E.P., Torres, C.E.R., Pizarro, C., Alfonso, L.E.Z. (eds) LACAME 2012. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6482-8_31
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DOI: https://doi.org/10.1007/978-94-007-6482-8_31
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