Publication de 8 numéros par an
ISSN Imprimer: 2150-3621
ISSN En ligne: 2150-363X
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A STUDY OF THE HETEROGENEOUS REDUCTION OF NO ON BITUMINOUS COAL CHARS
RÉSUMÉ
The influence of char textural properties and coal rank on NO reduction was studied. A range of bituminous coals were pyrolyzed to obtain chars with different textural properties. A TG-MS was used to study the combustion behavior of the samples and the nitrogen compounds evolved. Experiments on the heterogeneous reduction of NO were carried out using chars with a different surface chemistry. The results show that NO-char interaction depends, to a large degree, on temperature. In the range of low temperatures (<750°C) surface complexes played an important role in the overall NO reduction. In the high-temperature range (>750°C), a different mechanism seems to be involved.