Heterogeneous reduction of nitric oxide on synthetic coal chars
Model compounds, with a controlled heteroatoms content and well-defined functionalities, were used to study the release of nitrogen compounds from char combustion. In the present work, the mechanisms involved in NO-char heterogeneous reduction were studied with a synthetic coal (SC) char as carbon source. Another synthetic char (SN) without any nitrogen in its composition was also employed in these studies. Temperature programmed reduction (TPR) tests with a gas mixture of 400 ppm NO in argon and with isotopically labelled nitric oxide, 15NO (500 ppm 15NO in argon), were carried out. The gases produced were quantitatively determined by means of MS and FTIR analysers. Under the conditions of this work the main products of the NO-C reaction were found to be N2 and CO2. The main path of reaction involves the formation of surface nitrogen compounds that afterwards react with nitrogen from the reactive gas to form N2. It was observed that fuel-N also participates in the overall heterogeneous reduction reaction, although to a lesser extent.
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Elsevier
2005-12
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| Subjects: | NOx, Heterogeneous reduction, Coal char, Model compounds, |
| Online Access: | http://hdl.handle.net/10261/103137 |
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dig-incar-es-10261-1031372018-11-16T07:46:42Z Heterogeneous reduction of nitric oxide on synthetic coal chars Pevida García, Covadonga Arenillas de la Puente, Ana Rubiera González, Fernando Pis Martínez, José Juan NOx Heterogeneous reduction Coal char Model compounds Model compounds, with a controlled heteroatoms content and well-defined functionalities, were used to study the release of nitrogen compounds from char combustion. In the present work, the mechanisms involved in NO-char heterogeneous reduction were studied with a synthetic coal (SC) char as carbon source. Another synthetic char (SN) without any nitrogen in its composition was also employed in these studies. Temperature programmed reduction (TPR) tests with a gas mixture of 400 ppm NO in argon and with isotopically labelled nitric oxide, 15NO (500 ppm 15NO in argon), were carried out. The gases produced were quantitatively determined by means of MS and FTIR analysers. Under the conditions of this work the main products of the NO-C reaction were found to be N2 and CO2. The main path of reaction involves the formation of surface nitrogen compounds that afterwards react with nitrogen from the reactive gas to form N2. It was observed that fuel-N also participates in the overall heterogeneous reduction reaction, although to a lesser extent. Peer reviewed 2014-10-10T07:32:12Z 2014-10-10T07:32:12Z 2005-12 artículo http://purl.org/coar/resource_type/c_6501 Fuel 84(17): 2275-2279 (2005) 0016-2361 http://hdl.handle.net/10261/103137 10.1016/j.fuel.2005.06.003 1873-7153 en Postprint http://dx.doi.org/10.1016/j.fuel.2005.06.003 Sí open Elsevier |
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NOx Heterogeneous reduction Coal char Model compounds NOx Heterogeneous reduction Coal char Model compounds |
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NOx Heterogeneous reduction Coal char Model compounds NOx Heterogeneous reduction Coal char Model compounds Pevida García, Covadonga Arenillas de la Puente, Ana Rubiera González, Fernando Pis Martínez, José Juan Heterogeneous reduction of nitric oxide on synthetic coal chars |
| description |
Model compounds, with a controlled heteroatoms content and well-defined functionalities, were used to study the release of nitrogen compounds from char combustion. In the present work, the mechanisms involved in NO-char heterogeneous reduction were studied with a synthetic coal (SC) char as carbon source. Another synthetic char (SN) without any nitrogen in its composition was also employed in these studies. Temperature programmed reduction (TPR) tests with a gas mixture of 400 ppm NO in argon and with isotopically labelled nitric oxide, 15NO (500 ppm 15NO in argon), were carried out. The gases produced were quantitatively determined by means of MS and FTIR analysers.
Under the conditions of this work the main products of the NO-C reaction were found to be N2 and CO2. The main path of reaction involves the formation of surface nitrogen compounds that afterwards react with nitrogen from the reactive gas to form N2. It was observed that fuel-N also participates in the overall heterogeneous reduction reaction, although to a lesser extent. |
| format |
artículo |
| topic_facet |
NOx Heterogeneous reduction Coal char Model compounds |
| author |
Pevida García, Covadonga Arenillas de la Puente, Ana Rubiera González, Fernando Pis Martínez, José Juan |
| author_facet |
Pevida García, Covadonga Arenillas de la Puente, Ana Rubiera González, Fernando Pis Martínez, José Juan |
| author_sort |
Pevida García, Covadonga |
| title |
Heterogeneous reduction of nitric oxide on synthetic coal chars |
| title_short |
Heterogeneous reduction of nitric oxide on synthetic coal chars |
| title_full |
Heterogeneous reduction of nitric oxide on synthetic coal chars |
| title_fullStr |
Heterogeneous reduction of nitric oxide on synthetic coal chars |
| title_full_unstemmed |
Heterogeneous reduction of nitric oxide on synthetic coal chars |
| title_sort |
heterogeneous reduction of nitric oxide on synthetic coal chars |
| publisher |
Elsevier |
| publishDate |
2005-12 |
| url |
http://hdl.handle.net/10261/103137 |
| work_keys_str_mv |
AT pevidagarciacovadonga heterogeneousreductionofnitricoxideonsyntheticcoalchars AT arenillasdelapuenteana heterogeneousreductionofnitricoxideonsyntheticcoalchars AT rubieragonzalezfernando heterogeneousreductionofnitricoxideonsyntheticcoalchars AT pismartinezjosejuan heterogeneousreductionofnitricoxideonsyntheticcoalchars |
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1777668931727654912 |