Low-pressure chemical and photochemical reactions of oxides of nitrogen on alumina taken as a model substance for mineral dust in relation to air pollution

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Low-pressure chemical and photochemical reactions of oxides of nitrogen on alumina taken as a model substance for mineral dust in relation to air pollution. / Lisachenko, A. A.; Klimovskii, A. O.; Mikhailov, R. V.; Shelimov, B. N.; Che, M.

In: Catalysis Today, Vol. 119, No. 1-4, 15.01.2007, p. 247-251.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{113f14f382e04f758c87ae343c271c92,

title = "Low-pressure chemical and photochemical reactions of oxides of nitrogen on alumina taken as a model substance for mineral dust in relation to air pollution",

abstract = "The interaction of γ-Al2O3, taken as a model substance of tropospheric mineral dust, with N2O, NO and NO2 has been studied using kinetic and temperature-programmed desorption (TPD) mass-spectrometry in presence and absence of UV irradiation. At low surface coverages (<0.001 ML), adsorption of N2O and NO2 is accompanied by dissociation and chemiluminescence, whereas adsorption of NO does not lead to appreciable dissociation. Upon UV irradiation of Al2O3 in a flow of N2O, photoinduced decomposition and desorption of N2O take place, whereas in a flow of NO, only photoinduced desorption is observed. Dark dissociative adsorption of N2O and NO and photoinduced N2O dissociation apparently occur by a mechanism involving electron capture from surface F- and F+-centers. Photoinduced desorption of N2O and NO may be associated with decomposition of complexes of these molecules with Lewis acid sites, V-centers or OH-groups. TPD of N2O and NO proceeds predominantly without decomposition, while NO2 partially decomposes to NO and O2.",

keywords = "Adsorption, Air pollution, Alumina, Dissociation, Mineral dust, Nitrogen oxide, UV irradiation",

author = "Lisachenko, {A. A.} and Klimovskii, {A. O.} and Mikhailov, {R. V.} and Shelimov, {B. N.} and M. Che",

note = "Funding Information: This work was supported by INTAS under grant 03-51-6088 and by the Russian Foundation for Basic Research under grant 05-03-32490. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; Air Pollution Abatement Catalysis Symposium (APAC) ; Conference date: 21-09-2005 Through 24-09-2005",

year = "2007",

month = jan,

day = "15",

doi = "10.1016/j.cattod.2006.08.052",

language = "English",

volume = "119",

pages = "247--251",

journal = "Catalysis Today",

issn = "0920-5861",

publisher = "Elsevier",

number = "1-4",

}

RIS

TY - JOUR

T1 - Low-pressure chemical and photochemical reactions of oxides of nitrogen on alumina taken as a model substance for mineral dust in relation to air pollution

AU - Lisachenko, A. A.

AU - Klimovskii, A. O.

AU - Mikhailov, R. V.

AU - Shelimov, B. N.

AU - Che, M.

N1 - Funding Information: This work was supported by INTAS under grant 03-51-6088 and by the Russian Foundation for Basic Research under grant 05-03-32490. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2007/1/15

Y1 - 2007/1/15

N2 - The interaction of γ-Al2O3, taken as a model substance of tropospheric mineral dust, with N2O, NO and NO2 has been studied using kinetic and temperature-programmed desorption (TPD) mass-spectrometry in presence and absence of UV irradiation. At low surface coverages (<0.001 ML), adsorption of N2O and NO2 is accompanied by dissociation and chemiluminescence, whereas adsorption of NO does not lead to appreciable dissociation. Upon UV irradiation of Al2O3 in a flow of N2O, photoinduced decomposition and desorption of N2O take place, whereas in a flow of NO, only photoinduced desorption is observed. Dark dissociative adsorption of N2O and NO and photoinduced N2O dissociation apparently occur by a mechanism involving electron capture from surface F- and F+-centers. Photoinduced desorption of N2O and NO may be associated with decomposition of complexes of these molecules with Lewis acid sites, V-centers or OH-groups. TPD of N2O and NO proceeds predominantly without decomposition, while NO2 partially decomposes to NO and O2.

AB - The interaction of γ-Al2O3, taken as a model substance of tropospheric mineral dust, with N2O, NO and NO2 has been studied using kinetic and temperature-programmed desorption (TPD) mass-spectrometry in presence and absence of UV irradiation. At low surface coverages (<0.001 ML), adsorption of N2O and NO2 is accompanied by dissociation and chemiluminescence, whereas adsorption of NO does not lead to appreciable dissociation. Upon UV irradiation of Al2O3 in a flow of N2O, photoinduced decomposition and desorption of N2O take place, whereas in a flow of NO, only photoinduced desorption is observed. Dark dissociative adsorption of N2O and NO and photoinduced N2O dissociation apparently occur by a mechanism involving electron capture from surface F- and F+-centers. Photoinduced desorption of N2O and NO may be associated with decomposition of complexes of these molecules with Lewis acid sites, V-centers or OH-groups. TPD of N2O and NO proceeds predominantly without decomposition, while NO2 partially decomposes to NO and O2.

KW - Adsorption

KW - Air pollution

KW - Alumina

KW - Dissociation

KW - Mineral dust

KW - Nitrogen oxide

KW - UV irradiation

UR - http://www.scopus.com/inward/record.url?scp=33750443204&partnerID=8YFLogxK

U2 - 10.1016/j.cattod.2006.08.052

DO - 10.1016/j.cattod.2006.08.052

M3 - Article

VL - 119

SP - 247

EP - 251

JO - Catalysis Today

JF - Catalysis Today

SN - 0920-5861

IS - 1-4

T2 - Air Pollution Abatement Catalysis Symposium (APAC)

Y2 - 21 September 2005 through 24 September 2005

ER -

ID: 5463973