For realizing resource desulfurization and high-value sulfur recovery, an iron-loaded catalyst was prepared from steelmaking byproduct blast furnace slag to reduce SO₂ to elemental sulfur with CO. SO₂ conversion efficiency, sulfur selectivity, and sulfur yield were used to evaluate the catalyst behavior. The catalyst with 15wt.% Fe₂O₃ at 500 °C showed the best activity performance. The changes in the structure and active phase of the catalyst as well as the complete reaction pathway were explored. A series of in situ diffuse reflectance infrared Fourier transform spectroscopy experiments were used to study the adsorption and desorption processes of CO and SO₂, and a large number of sulfates were formed on the catalyst surface after the reaction. Combined with the experimental performance, the strong adsorption of BFS and the production pathway of H₂S were proposed. The prepared iron-loaded catalysts followed the redox mechanism and the COS intermediate mechanism in the reaction.

为了实现资源脱硫和高价值的硫回收，从炼钢副产品高炉矿渣中制备了一种铁负载催化剂，用CO将SO ₂还原为元素硫。利用SO _2的转化效率，硫的选择性和硫的收率来评价催化剂行为。在500℃下具有15wt。％的Fe ₂ O ₃的催化剂表现出最佳的活性性能。探索了催化剂的结构和活性相的变化以及完整的反应路径。利用一系列原位漫反射红外傅里叶变换光谱实验研究了CO和SO ₂的吸附和解吸过程。反应后，在催化剂表面形成大量硫酸盐。结合实验性能，提出了BFS的强吸附性和H ₂ S的产生途径。制备的铁负载催化剂在反应中遵循氧化还原机理和COS中间机理。