Formation of nitrogen oxides from fuel-N through HCN and NH3: A model-compound study

Jouni Hämäläinen, Martti Aho, Jouni Tummavuori

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Abstract

The conversion of fuel-nitrogen to HCN and NH3 and to nitrogen oxides was studied with nitrogen-containing model compounds, chosen to represent the main nitrogen and oxygen functionalities in fossil fuels. Two kinds of experiments were performed in an entrained-flow reactor at 800 °C. The conversion of model-compound-N to HCN and NH3 was determined under inert conditions, and the formation of NO, N2O and NO2 was determined under oxidizing conditions. In inert atmosphere, oxygen-containing functional groups had an important effect on the ratio of HCN to NH3. In particular, OH groups bound directly in the ring structure increased the conversion of nitrogen to NH3. In oxidizing atmosphere, the conversions of model-compound-N to N2O were high, but the substituent groups had no well-defined effect on the ratio of N2O to NO. The formation of NO2 was insignificant.
Original languageEnglish
Pages (from-to)1894-1898
Number of pages5
JournalFuel
Volume73
Issue number12
DOIs
Publication statusPublished - 1994
MoE publication typeA1 Journal article-refereed

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Nitrogen Oxides
Nitrogen oxides
Nitrogen
Oxygen
Fossil fuels
Functional groups
Experiments

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Hämäläinen, Jouni ; Aho, Martti ; Tummavuori, Jouni. / Formation of nitrogen oxides from fuel-N through HCN and NH3 : A model-compound study. In: Fuel. 1994 ; Vol. 73, No. 12. pp. 1894-1898.
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abstract = "The conversion of fuel-nitrogen to HCN and NH3 and to nitrogen oxides was studied with nitrogen-containing model compounds, chosen to represent the main nitrogen and oxygen functionalities in fossil fuels. Two kinds of experiments were performed in an entrained-flow reactor at 800 °C. The conversion of model-compound-N to HCN and NH3 was determined under inert conditions, and the formation of NO, N2O and NO2 was determined under oxidizing conditions. In inert atmosphere, oxygen-containing functional groups had an important effect on the ratio of HCN to NH3. In particular, OH groups bound directly in the ring structure increased the conversion of nitrogen to NH3. In oxidizing atmosphere, the conversions of model-compound-N to N2O were high, but the substituent groups had no well-defined effect on the ratio of N2O to NO. The formation of NO2 was insignificant.",
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Formation of nitrogen oxides from fuel-N through HCN and NH3 : A model-compound study. / Hämäläinen, Jouni; Aho, Martti; Tummavuori, Jouni.

In: Fuel, Vol. 73, No. 12, 1994, p. 1894-1898.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Formation of nitrogen oxides from fuel-N through HCN and NH3

T2 - A model-compound study

AU - Hämäläinen, Jouni

AU - Aho, Martti

AU - Tummavuori, Jouni

PY - 1994

Y1 - 1994

N2 - The conversion of fuel-nitrogen to HCN and NH3 and to nitrogen oxides was studied with nitrogen-containing model compounds, chosen to represent the main nitrogen and oxygen functionalities in fossil fuels. Two kinds of experiments were performed in an entrained-flow reactor at 800 °C. The conversion of model-compound-N to HCN and NH3 was determined under inert conditions, and the formation of NO, N2O and NO2 was determined under oxidizing conditions. In inert atmosphere, oxygen-containing functional groups had an important effect on the ratio of HCN to NH3. In particular, OH groups bound directly in the ring structure increased the conversion of nitrogen to NH3. In oxidizing atmosphere, the conversions of model-compound-N to N2O were high, but the substituent groups had no well-defined effect on the ratio of N2O to NO. The formation of NO2 was insignificant.

AB - The conversion of fuel-nitrogen to HCN and NH3 and to nitrogen oxides was studied with nitrogen-containing model compounds, chosen to represent the main nitrogen and oxygen functionalities in fossil fuels. Two kinds of experiments were performed in an entrained-flow reactor at 800 °C. The conversion of model-compound-N to HCN and NH3 was determined under inert conditions, and the formation of NO, N2O and NO2 was determined under oxidizing conditions. In inert atmosphere, oxygen-containing functional groups had an important effect on the ratio of HCN to NH3. In particular, OH groups bound directly in the ring structure increased the conversion of nitrogen to NH3. In oxidizing atmosphere, the conversions of model-compound-N to N2O were high, but the substituent groups had no well-defined effect on the ratio of N2O to NO. The formation of NO2 was insignificant.

U2 - 10.1016/0016-2361(94)90218-6

DO - 10.1016/0016-2361(94)90218-6

M3 - Article

VL - 73

SP - 1894

EP - 1898

JO - Fuel

JF - Fuel

SN - 0016-2361

IS - 12

ER -