Nitric oxide decomposition over BaRuxBi1?xO3 (X=0.33, 0.50, 0.67, 1.00) perovskite-like catalysts |
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| Authors: | R Bontchev K Cheshkova D Mehandjiev and J Darriet |
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| Institution: | (1) Institute of General and Inorganic Chemistry, 1113 Sofia, Bulgaria;(2) Institut de Chimie de la Matiere Condensee de Bordeaux, 33608 Pessac Cedex, France |
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| Abstract: | The catalytic activity of Ba2Ru0.67Bi1.33O6, Ba2RuBiO6, Ba3Ru2BiO9 and BaRuO3 towards NO-decomposition prior to and after treatment with NH3 has been studied. About 100% degree of conversion has been achieved at 400°C for samples with the highest percentage of hexagonal
stacking in their crystal structures. It has been shown that the active sites are units of two or three face-sharing RuO6] octahedra in which a strong Ru−Ru interaction takes placevia the common faces. |
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| Keywords: | NO decomposition hexagonal perovskites |
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