Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Spectrokinetic study of the mechanism of NOx reduction with propylene over ZrO2 in excess oxygen. / Matyshak, V. A.; Il’ichev, A. N.; Sil’chenkova, O. N. и др.
в: Kinetics and Catalysis, Том 58, № 2, 03.2017, стр. 198-210.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Spectrokinetic study of the mechanism of NOx reduction with propylene over ZrO2 in excess oxygen
AU - Matyshak, V. A.
AU - Il’ichev, A. N.
AU - Sil’chenkova, O. N.
AU - Sadykov, V. A.
AU - Korchak, V. N.
PY - 2017/3
Y1 - 2017/3
N2 - It has been demonstrated by quantitative spectrokinetic measurements that, on the surface of zirconia stabilized as a tetragonal phase, the rate-limiting step of the selective catalytic reduction of nitrogen oxides (SCR of NOx) with propylene is the interaction of surface nitrates with C3H6 yielding organic nitro compounds. It is hypothesized that propylene reacts not with the nitrates themselves but with the activated complex NO2 ads whose structure is intermediate between the structures of the monodentate NO3 − and NO2 species. Deep C3H6 oxidation exerts an adverse effect on the rate of the SCR of NOx with propylene, and the interaction between O2 and NO, which yields NO2 and NO3 − stimulates further nitrogen reduction to N2. The effect of the reaction between oxygen and O2N−CnHm on the NOx reduction rate is variable and is determined by the C3H6/NOx ratio. A generalized scheme of the SCR of NOx with propylene on the surface of ZrO2 partially stabilized as a tetragonal phase has been developed by comparing experimental data of this study and data available from the literature.
AB - It has been demonstrated by quantitative spectrokinetic measurements that, on the surface of zirconia stabilized as a tetragonal phase, the rate-limiting step of the selective catalytic reduction of nitrogen oxides (SCR of NOx) with propylene is the interaction of surface nitrates with C3H6 yielding organic nitro compounds. It is hypothesized that propylene reacts not with the nitrates themselves but with the activated complex NO2 ads whose structure is intermediate between the structures of the monodentate NO3 − and NO2 species. Deep C3H6 oxidation exerts an adverse effect on the rate of the SCR of NOx with propylene, and the interaction between O2 and NO, which yields NO2 and NO3 − stimulates further nitrogen reduction to N2. The effect of the reaction between oxygen and O2N−CnHm on the NOx reduction rate is variable and is determined by the C3H6/NOx ratio. A generalized scheme of the SCR of NOx with propylene on the surface of ZrO2 partially stabilized as a tetragonal phase has been developed by comparing experimental data of this study and data available from the literature.
KW - adsorption of NO
KW - and their mixtures with O
KW - CH
KW - properties of surface complexes
KW - selective catalytic reduction of NO
KW - zirconia catalysts
KW - C3H6
KW - REACTION PATHS
KW - PROPENE
KW - COMPLEXES
KW - DIOXIDE
KW - IR
KW - adsorption of NOx
KW - and their mixtures with O-2
KW - selective catalytic reduction of NOx
KW - ALUMINA
KW - SELECTIVE CATALYTIC-REDUCTION
KW - NO(X)
KW - NITROGEN-OXIDES
UR - http://www.scopus.com/inward/record.url?scp=85017587910&partnerID=8YFLogxK
U2 - 10.1134/S0023158417020082
DO - 10.1134/S0023158417020082
M3 - Article
AN - SCOPUS:85017587910
VL - 58
SP - 198
EP - 210
JO - Kinetics and Catalysis
JF - Kinetics and Catalysis
SN - 0023-1584
IS - 2
ER -
ID: 10264475