JOURNAL OF CHILEAN CHEMICAL SOCIETY

Vol 61 No 1 (2016): Journal of the Chilean Chemical Society
Original Research Papers

CHEMICAL CHARACTERIZATION OF SUB-BITUMINOUS COAL FROM THE ARAUCO PROVINCE – CHILE

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  • Paola Méndez,
  • Camila Rivera,
  • Cesar Pino,
  • Rodolfo Mundaca,
  • Rosario Castillo,
  • José Neira,
  • Carlos Peña-Farfal
Paola Méndez
LABEL, Laboratory of Biosensors & Electroanalysis, School of Pharmacy, University of Concepcion, Barrio Universitario SN, 4070043 – Concepcion
Camila Rivera
LABEL, Laboratory of Biosensors & Electroanalysis, School of Pharmacy, University of Concepcion, Barrio Universitario SN, 4070043 – Concepcion
Cesar Pino
LABEL, Laboratory of Biosensors & Electroanalysis, School of Pharmacy, University of Concepcion, Barrio Universitario SN, 4070043 – Concepcion
Rodolfo Mundaca
Department of Instrumental Analysis, School of Pharmacy, University of Concepcion, Barrio Universitario SN, 4070043 – Concepcion
Rosario Castillo
Department of Instrumental Analysis, School of Pharmacy, University of Concepcion, Barrio Universitario SN, 4070043 – Concepcion
José Neira
Department of Instrumental Analysis, School of Pharmacy, University of Concepcion, Barrio Universitario SN, 4070043 – Concepcion
Carlos Peña-Farfal
LABEL, Laboratory of Biosensors & Electroanalysis, School of Pharmacy, University of Concepcion, Barrio Universitario SN, 4070043 – Concepcion Department of Instrumental Analysis, School of Pharmacy, University of Concepcion, Barrio Universitario SN, 4070043 – Concepcion
Published December 10, 2015
Keywords
  • Arauco mineral coal,
  • FTIR,
  • Boehm tritation,
  • Oxidation surface,
  • SEM
How to Cite
Méndez, P., Rivera, C., Pino, C., Mundaca, R., Castillo, R., Neira, J., & Peña-Farfal, C. (2015). CHEMICAL CHARACTERIZATION OF SUB-BITUMINOUS COAL FROM THE ARAUCO PROVINCE – CHILE. Journal of the Chilean Chemical Society, 61(1). Retrieved from https://jcchems.com/index.php/JCCHEMS/article/view/48

Copyright (c) 2016 Paola Méndez, Camila Rivera, Cesar Pino, Rodolfo Mundaca, Rosario Castillo, José Neira, Carlos Peña-Farfal

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Abstract

The chemical and sorptive characteristics of mineral coals extracted from a mine in Lebu (Biobío Region, Chile) and its derivatives were studied. These derivatives were obtained by applying a thermal treatment in an environment with N2 and CO2 at different experimental conditions, in order to increase their specific surface. In addition, coals were characterized by using proximal analysis, elementary analysis and petrographic analysis. In order to know their structure and surface, Boehm titration analysis, FTIR infrared spectroscopy, X-ray diffraction and scanning electron microscopy were performed. The surface of the selected carbons was modified by selectively oxidizing it with (NH4)2S4O8 and with H2O2 e impregnating with an iron solution for the study with H2O2 In the oxidation of H2O2, the work was carried out at different pH. The results show a moderate homogeneity between different types of seams studied, whereas when coals are treated with heat or strong oxidants, increases its surface and can be used with analytical applications (v.g. electroanalytical sensors).

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