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International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.435 CiteScore™: 0.74

ISSN Imprimer: 2150-3621
ISSN En ligne: 2150-363X

International Journal of Energy for a Clean Environment

Précédemment connu sous le nom Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.v5.i4.10
18 pages

A STUDY OF THE HETEROGENEOUS REDUCTION OF NO ON BITUMINOUS COAL CHARS

A. Arenillas
Instituto Nacional del Carbón (CSIC), Apartado 73, 33080 Oviedo, Spain
F. Rubiera
Instituto Nacional del Carbón (CSIC), Apartado 73, 33080 Oviedo, Spain
J. B. Parra
Instituto Nacional del Carbon, CSIC, Apartado 73, 33080 Oviedo, Spain
J. J. Pis
Instituto Nacional del Carbón (CSIC), Apartado 73, 33080 Oviedo, Spain

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.


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