The state of palladium and copper on the surface of freshly prepared low temperature carbon monoxide oxidadation catalyst PdCl2-CuCl2/γ-Al2O3
Abstract
The EXAFS/XANES, XRD, SEM methods were used for examination of freshly prepared low temperature carbon monoxide oxidation in air catalyst PdCl2-CuCl2/γ-Al2O3 active components states. The Cu2Cl(OH)3 phase with particle size 100-300 nm and tetrachloropalladat particles were identified on γ-Al2O3 surface. According to EXAFS data one of the palladium chloride bonds is longer then another ones. There is no direct interaction between palladium and copper, i.e. there is no common active center including palladium and copper on the γ-Al2O3 surface responsible on the low temperature carbon monoxide oxidation in air.
Keywords
catalyst,
low temperature oxidation,
carbon monoxide,
palladium(II) chloride,
copper(II) chloride,
γ-aluminum oxide,
trihydroxide-chloride copper(II),
XANES,
EXAFS,
SEM
541.128.13; 546.262.3-31
About the Authors
D. N. Titov
M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571
Russian Federation
Russian Federation
L. G. Bruk
M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571
Russian Federation
Russian Federation
I. V. Oshanina
M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571
Russian Federation
Russian Federation
O. N. Temkin
M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571
Russian Federation
Russian Federation
G. M. Kuz’micheva
M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571
Russian Federation
Russian Federation
Ya. V. Zubavichus
РНЦ «Курчатовский институт»
Russian Federation
Russian Federation
A. A. Veligzhanin
РНЦ «Курчатовский институт»
Russian Federation
Russian Federation
N. V. Sadovskaya
ФГУП «НИФХИ им. Л.Я. Карпова»
Russian Federation
Russian Federation
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For citation:
Titov D.N., Bruk L.G., Oshanina I.V., Temkin O.N., Kuz’micheva G.M., Zubavichus Y.V., Veligzhanin A.A., Sadovskaya N.V. The state of palladium and copper on the surface of freshly prepared low temperature carbon monoxide oxidadation catalyst PdCl2-CuCl2/γ-Al2O3. Fine Chemical Technologies. 2010;5(3):62-68. (In Russ.)
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