Abstract
AbstractFe/ATP (attapulgite) desulfurizers with different loads were prepared by precipitation method. XRD profiles revealed that the loading threshold of monolayer dispersion was 28.75 %. The desulfurizers were characterized by UV‐vis, FT‐IR, TPR, BET, and SEM. The performances of desulfurizers with different loads were compared. When the loading reached the threshold, both the sulfur capacity of the desulfurizer and the availability ratio of iron oxides were the highest. Beyond the threshold, the amount of Fe3+ bound to the skeleton of ATP increased to form skeleton iron, and some iron oxides gathered together, causing decreases in the sulfur capacity. The dissolution amount of Fe3+ showed the bonding strength between active components and ATP by acid dissolution experiments, which became stronger with increases of skeleton iron. Processes of deactivation were fitted by the deactivation model, which revealed that the changes in loadings would impact the deactivation of desulfurizers.
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