TY - JOUR

T1 - On the properties of surface complexes formed upon the adsorption of NOx, C3H6, and their mixtures with oxygen on ZrO2 according to EPR, TPD, and fourier transform IR spectroscopy data

AU - Matyshak, V. A.

AU - Il’ichev, A. N.

AU - Sil’chenkova, O. N.

AU - Sadykov, V. A.

AU - Korchaka, V. N.

PY - 2016/9/1

Y1 - 2016/9/1

N2 - The adsorption of reactant mixtures is quantitatively and qualitatively different from the adsorption of the individual reactants. Thus, O2 is almost not adsorbed on ZrO2; however, a considerable concentration of molecular oxygen was detected among the products of desorption after the adsorption of a mixture of NO + O2 and the total amount of desorbed molecules was greater by a factor of 10 than their total amount after the individual adsorption of NO and O2. Among the qualitative differences is the formation of the O2 - radical anion on the surface only upon the adsorption of the mixture of NO + O2. Similarly, the number of desorbed molecules upon the simultaneous adsorption of C3H6, NO, and O2 was much greater than that upon their individual adsorption; this is related to the formation of paramagnetic and nonparamagnetic NO2–hydrocarbon complexes on the surface, which contained the NO2 group and a hydrocarbon fragment.

AB - The adsorption of reactant mixtures is quantitatively and qualitatively different from the adsorption of the individual reactants. Thus, O2 is almost not adsorbed on ZrO2; however, a considerable concentration of molecular oxygen was detected among the products of desorption after the adsorption of a mixture of NO + O2 and the total amount of desorbed molecules was greater by a factor of 10 than their total amount after the individual adsorption of NO and O2. Among the qualitative differences is the formation of the O2 - radical anion on the surface only upon the adsorption of the mixture of NO + O2. Similarly, the number of desorbed molecules upon the simultaneous adsorption of C3H6, NO, and O2 was much greater than that upon their individual adsorption; this is related to the formation of paramagnetic and nonparamagnetic NO2–hydrocarbon complexes on the surface, which contained the NO2 group and a hydrocarbon fragment.

KW - adsorption of NO

KW - and their mixtures with O

KW - CH

KW - properties of surface complexes

KW - selective catalytic reduction of NO

KW - zirconium dioxide catalysts

UR - http://www.scopus.com/inward/record.url?scp=84991108001&partnerID=8YFLogxK

U2 - 10.1134/S0023158416050153

DO - 10.1134/S0023158416050153

M3 - Article

AN - SCOPUS:84991108001

VL - 57

SP - 677

EP - 685

JO - Kinetics and Catalysis

JF - Kinetics and Catalysis

SN - 0023-1584

IS - 5

ER -