Supercritical Water as Nanomedium for Gasification of Lignite-Water Suspension
| Autor: | Raisa Korzh, Valerii Bortyshevskyi |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Materials science
Hydrogen 020209 energy chemistry.chemical_element 02 engineering and technology Oxygen Methane Suspension (chemistry) Nanosized clusters chemistry.chemical_compound Materials Science(all) 0202 electrical engineering electronic engineering information engineering General Materials Science Coal Water-coal suspension gasification Supercritical water oxidation Supercritical fluids Nano Express business.industry Ionic associates 021001 nanoscience & nanotechnology Condensed Matter Physics Supercritical fluid chemistry Chemical engineering Carbon dioxide 0210 nano-technology business |
| Zdroj: | Nanoscale Research Letters |
| ISSN: | 1931-7573 |
| DOI: | 10.1186/s11671-016-1458-x |
| Popis: | The gasification of an aqueous suspension of lignite from Alexandria coalfield (Ukraine) under the supercritical pressure was studied. The initial rates of the formation of hydrogen, carbon dioxide and methane were evaluated. The mutually stimulating interaction of the components of “brown coal-water-mineral matter” system was shown due to the influence of nanoscaled water medium on the formation of dipole-inductive, dispersive and ionic associates. In the temperature range of 300–450 °C, the oxygen source for gaseous products of the lignite supercritical gasification is mainly ion-associative nanoclustered water. The source of hydrogen at the subcritical temperature is the organic part of brown coal. For the supercritical water, the source of H is the nanoscale medium with ion associates. The last ones were responsible for the further transformation of coal. |
| Databáze: | OpenAIRE |
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