Abstract：The CeO2-WO3/TiO2 (CeWTi) SCR catalyst was prepared by impregnation method. Based on the centrifugal spray drying technology, the effects of inlet temperature on catalyst powder morphology, granularity, specific surface area and denitrification performance were studied, and the influence mechanism was studied. The results showed that the spray rate and granularity of CeWTi catalyst increase significantly with the inlet spray temperature rising, but no significant change in particle size of the powder before calcination, the particle size is only about 1 μm. This is because the agglomerates of Ce(NO3)3·4H2O and Ti(W)O2 are formed during spray drying, instead of the solid solution of Ce-W-Ti-O. Due to the dissolution of Ce(NO3)3·4H2O when detecting granularity, the result is not the actual particle size of the spray powder, but the granularity of Ti(W)O2.
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2021, Vol. 28 