【摘要】 采用碳酸钾（K₂CO₃）与活化半焦通过浸渍法制备用于除去烟气SO₂的催化脱硫材料（K/ASC）。研究表明,将活化半焦（ASC）通过10%（质量分数）K₂CO₃改性获得钾基半焦（K10）,其在120℃时具有良好的SO₂脱除效率,而且随着再生温度的升高（400～700℃）,再生后K10的脱硫活性明显提高。K10（K10-R-600-n）的循环再生测试表明,样品在4次再生循环（K10-R-600-4）后具有最佳的脱硫性能,其硫容量为68.9 mg·g-1,比K10（55.4 mg·g-1）高24.37%。再生分析脱硫产物为物理吸附的SO₂,H₂SO₄和硫酸盐,再生后未分解的硫酸盐沉积会降低样品的脱硫活性。经过10次循环再生（K10-R-600-10）,样品的硫容量为初始钾基半焦K10的70%。更多还原

【Abstract】 The potassium modified Activated Semi-coke（K/ASC） for SO₂ removal was prepared using potassium carbonate（K₂CO₃） by the impregnation method. The ASC modified by 10%（w/w） K₂CO₃（K10） exhibited good SO₂ removal efficiency at 120 ℃. From 400 to 700 ℃, the higher the regeneration temperature is, the better is the desulfurization activity of K10 after regeneration. Cyclic regeneration of K10（K10-R-600-n） showed that the sample had the best desulfurization performance after four regeneration cycles（K10-R-600-4）, and its sulfur capacity was 68.9 mg·g-1, 24.37% higher than that of K10（55.4 mg·g-1）. The desulfurization products are divided into physisorbed SO₂, H2 SO4 and sulfate. The deposition of sulfate, which does not decompose after regeneration,results in the decrease of the desulfurization activity. The sulfur capacity of the sample after ten regeneration cycles（K10-R-600-10） remained 70% that of the fresh K10.更多还原