Charcteristics and Mechanism Study of the CuO/γ-Al2O3 Modified by CeO2 and NaCl

Abstract

The CuO/γ-Al2O3 absorbent was modified by CeO2 and NaCl, and its desulfurization performance was studied experimentally in a fixed bed reactor. The experimental results show that the adsorption capacity of sulfur dioxide is significantly improved and the adsorption saturation time of sulfur dioxide is significantly extended with CeO2 and NaCl addition. The sulfur dioxide adsorption saturation time of the absorbent can be extended from 56 minutes to 78 minutes at 400°C, When the CeO2 loading is 3%, and can be further extended to 104 min, with 2% CeO2 and 5% NaCl loading. The improvement mechanism of the desulfurization performance of the modified CuO/γ-Al2O3 can be attributed to the promotion of the uniform distribution of the active components in the carrier and the optimization of the pore structure of the absorbent.