Quality control of DeNOx catalysts: Performance testing, surface analysis and characterization of DeNOx catalysts
1993
Abstract The major concern in applying catalytic DeNO x for the removal of NO x from flue gas is deactivation or poisoning of the catalyst, caused by poisons present in the flue gas. Evidently, a decreasing NO x removal efficiency will lead to an increasing emission of NO x and eventually to ammonia slip. In order to check the behaviour of DeNO x elements they have to be tested at regular intervals. For this purpose KEMA has developed a test programme, which includes catalyst activity and selectivity tests in a bench-scale system, together with surface analysis. By combining these techniques valuable information on ageing and fouling processes are obtained. In this paper these test procedures are described.
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