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