Abstract
How operation parameters (e.g. flow speed of flue gas and temperature) and flue gas properties (e.g. contents of SO2, NOx etc.) affect As2O3 adsorption by γ-Al2O3 under the condition of selective catalytic reduction (SCR) is the key to protecting catalyst from poisoning and preventing it being emitted into environments. The patterns of mentioned influence factors affecting adsorption of As2O3 have been investigated via experimental studies combined with molecular dynamics (MD) simulation calculations. According to the results of experiments and MD simulation, within the selected specific range of flue gas flow speed, As2O3 could be adsorbed effectively. In the meantime, with higher temperature, the thermal vibration of As2O3 molecule gets more intense and compromises the adsorption. Also, different flue gas contents affect As2O3 adsorption in different chemical and physical means. This research could provide valuable information for power plants and subsequent studies in related area.
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