SURFACE COPPER-TIO2 INTERACTION SPECIES FOR NO-CO REACTIONS

The catalytic properties of Cu/TiO2 have been studied for an NO-CO rea ction as a function of the calcination temperature, Cu content, and or igin of TiO2, It was found that Cu-TiO2 interaction species were respo nsible for catalytic activity at low temperature (140 degrees C). It i s suggested by means of XAFS and TPR that a rutile phase of TiO2 is ve ry effective for the formation of the catalytically active Cu-TiO2 int eraction species in an octahedral symmetry. (C) 1997 Elsevier Science B.V.