Role of n-containing surface species on NO reduction by carbon

Ph Chambrion; Takashi Kyotani; A. Tomita

doi:10.1021/ef970182r

Role of n-containing surface species on NO reduction by carbon

Ph Chambrion, Takashi Kyotani, A. Tomita

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101 Citations (Scopus)

Abstract

In order to understand the mechanism of C - NO reaction, the detailed material balance was established by analyzing all the gas species produced during the reaction with mass spectroscopy and gas chromatography. The amount of nitrogen-containing surface species was estimated in the temperature range between 600 and 950 °C and with NO concentration of, mainly, 540 ppm. Then the effect of surface species on the reaction rate was examined. The step response experiments were carried out by switching the feed gas from ¹⁴N¹⁶O to ¹⁵N¹⁸O. The results reveal not only the reaction mechanism but also the depletion rate of surface nitrogen species during the experiment. N₂ formation rate was correlated with NO concentration and the amount of surface nitrogen species. It is concluded that N₂ is mainly formed by the first-order reaction between C(N) and NO.

Original language	English
Pages (from-to)	416-421
Number of pages	6
Journal	Energy and Fuels
Volume	12
Issue number	2
DOIs	https://doi.org/10.1021/ef970182r
Publication status	Published - 1998 Jan 1

ASJC Scopus subject areas

Chemical Engineering(all)
Fuel Technology
Energy Engineering and Power Technology

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abstract = "In order to understand the mechanism of C - NO reaction, the detailed material balance was established by analyzing all the gas species produced during the reaction with mass spectroscopy and gas chromatography. The amount of nitrogen-containing surface species was estimated in the temperature range between 600 and 950 °C and with NO concentration of, mainly, 540 ppm. Then the effect of surface species on the reaction rate was examined. The step response experiments were carried out by switching the feed gas from 14N16O to 15N18O. The results reveal not only the reaction mechanism but also the depletion rate of surface nitrogen species during the experiment. N2 formation rate was correlated with NO concentration and the amount of surface nitrogen species. It is concluded that N2 is mainly formed by the first-order reaction between C(N) and NO.",

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N2 - In order to understand the mechanism of C - NO reaction, the detailed material balance was established by analyzing all the gas species produced during the reaction with mass spectroscopy and gas chromatography. The amount of nitrogen-containing surface species was estimated in the temperature range between 600 and 950 °C and with NO concentration of, mainly, 540 ppm. Then the effect of surface species on the reaction rate was examined. The step response experiments were carried out by switching the feed gas from 14N16O to 15N18O. The results reveal not only the reaction mechanism but also the depletion rate of surface nitrogen species during the experiment. N2 formation rate was correlated with NO concentration and the amount of surface nitrogen species. It is concluded that N2 is mainly formed by the first-order reaction between C(N) and NO.

AB - In order to understand the mechanism of C - NO reaction, the detailed material balance was established by analyzing all the gas species produced during the reaction with mass spectroscopy and gas chromatography. The amount of nitrogen-containing surface species was estimated in the temperature range between 600 and 950 °C and with NO concentration of, mainly, 540 ppm. Then the effect of surface species on the reaction rate was examined. The step response experiments were carried out by switching the feed gas from 14N16O to 15N18O. The results reveal not only the reaction mechanism but also the depletion rate of surface nitrogen species during the experiment. N2 formation rate was correlated with NO concentration and the amount of surface nitrogen species. It is concluded that N2 is mainly formed by the first-order reaction between C(N) and NO.

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Role of n-containing surface species on NO reduction by carbon

Abstract

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