[bmim]FeCl_4离子液体催化氧化硫化氢的研究

Catalytic oxidation of hydrogen sulfide via FeCl_4 ionic liquid

研究了[bmim]FeCl4离子液体催化氧化硫化氢的性能。结果表明,[bmim]FeCl4离子液体催化氧化硫化氢时具有良好的再生性能,不过其氧化硫化氢时的实际硫容不仅小于理论硫容而且随温度的升高逐渐降低,这可能与[bmim]FeCl4离子液体的强酸性以及其作为介质和催化剂的双重功能密切相关,减弱[bmim]FeCl4离子液体的酸性可能是增加硫容的关键。

The performances of [bmim]FeCl4 （1-butyl-3-methylimidazolium tetrachloroferrate） ionic liquid for catalytic oxidation of hydrogen sulfide were investigated. The results showed that [bmim]FeCl4 had good regeneration ability, but its measuring sulfur capacity was lower than the theoretical value and decreased with the increase of temperature, which was attributed to the strong acidity of [bmim]FeCl4 and its dual function as beth medium and catalyst. Weakening the acidity of [bmim]FeCl4 could be a key to increasing sulfur capacity.