Km. Eriksen et al., EPR spectroscopic characterization of DeNO(x) and SO2 oxidation catalysts and, model systems, CATAL TODAY, 54(4), 1999, pp. 465-472
The industrial SO2 oxidation catalyst VK69 deactivates at around 440 degree
s C in a 10% SO2, 11% O-2, 79% N-2 gas mixture. In situ EPR measurements sh
ow that the deactivation is caused by the precipitation of V(IV) compounds.
DeNO(x) catalysts based on V2O5/TiO2, the TiO2 support, analytical grade a
natase rnd transition metal-exchanged Al-PILCs (pillared clay) have been ch
aracterized by EPR spectroscopy and the catalytic activity of the catalysts
monitored up to 500 degrees C. Depending on the exchanged metal ion, a rel
atively large temperature range for the catalytic activity towards the SCR
reaction was observed. (C)1999 Elsevier Science B.V. All rights reserved.