A study of misleading effects of HCl treatment in the characterization of sulfur in coal
Апстракт
The purpose of this study was to determine the cause of the experimentally noticed decrease of sulfate sulfur during a thermal treatment of coal. In the case of the pyrolysis of the investigated six coals of different rank and with a widely differing sulfur contents, the decrease of the amount of sulfate sulfur was often GT 50% and, in some cases, GT 80%. The analysis of the obtained results indicates that this effect may be attributed to the overrated values of the sulfate sulfur in coal, which are the result of certain erroneous effects of the hydrochloric acid (HCl) treatment of coal, which is used during the standard procedures for sulfate sulfur determination. It is shown that, because of the HCl treatment, a portion of the organic and/or pyritic sulfur is identified as sulfate sulfur. This effect may be expected to be more pronounced in the case of low-rank coals, as well as in coals that have a relatively large content of pyritic sulfur.
Извор:
Energy and Fuels, 2004, 18, 4, 1169-1174
DOI: 10.1021/ef049964s
ISSN: 0887-0624
WoS: 000222896300032
Scopus: 2-s2.0-4043153553
Колекције
Институција/група
VinčaTY - JOUR AU - Manovic, V AU - Grubor, Borislav PY - 2004 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2790 AB - The purpose of this study was to determine the cause of the experimentally noticed decrease of sulfate sulfur during a thermal treatment of coal. In the case of the pyrolysis of the investigated six coals of different rank and with a widely differing sulfur contents, the decrease of the amount of sulfate sulfur was often GT 50% and, in some cases, GT 80%. The analysis of the obtained results indicates that this effect may be attributed to the overrated values of the sulfate sulfur in coal, which are the result of certain erroneous effects of the hydrochloric acid (HCl) treatment of coal, which is used during the standard procedures for sulfate sulfur determination. It is shown that, because of the HCl treatment, a portion of the organic and/or pyritic sulfur is identified as sulfate sulfur. This effect may be expected to be more pronounced in the case of low-rank coals, as well as in coals that have a relatively large content of pyritic sulfur. T2 - Energy and Fuels T1 - A study of misleading effects of HCl treatment in the characterization of sulfur in coal VL - 18 IS - 4 SP - 1169 EP - 1174 DO - 10.1021/ef049964s ER -
@article{ author = "Manovic, V and Grubor, Borislav", year = "2004", abstract = "The purpose of this study was to determine the cause of the experimentally noticed decrease of sulfate sulfur during a thermal treatment of coal. In the case of the pyrolysis of the investigated six coals of different rank and with a widely differing sulfur contents, the decrease of the amount of sulfate sulfur was often GT 50% and, in some cases, GT 80%. The analysis of the obtained results indicates that this effect may be attributed to the overrated values of the sulfate sulfur in coal, which are the result of certain erroneous effects of the hydrochloric acid (HCl) treatment of coal, which is used during the standard procedures for sulfate sulfur determination. It is shown that, because of the HCl treatment, a portion of the organic and/or pyritic sulfur is identified as sulfate sulfur. This effect may be expected to be more pronounced in the case of low-rank coals, as well as in coals that have a relatively large content of pyritic sulfur.", journal = "Energy and Fuels", title = "A study of misleading effects of HCl treatment in the characterization of sulfur in coal", volume = "18", number = "4", pages = "1169-1174", doi = "10.1021/ef049964s" }
Manovic, V.,& Grubor, B.. (2004). A study of misleading effects of HCl treatment in the characterization of sulfur in coal. in Energy and Fuels, 18(4), 1169-1174. https://doi.org/10.1021/ef049964s
Manovic V, Grubor B. A study of misleading effects of HCl treatment in the characterization of sulfur in coal. in Energy and Fuels. 2004;18(4):1169-1174. doi:10.1021/ef049964s .
Manovic, V, Grubor, Borislav, "A study of misleading effects of HCl treatment in the characterization of sulfur in coal" in Energy and Fuels, 18, no. 4 (2004):1169-1174, https://doi.org/10.1021/ef049964s . .