The use of Fe 2+ as a catalyst not only could reach the stable purification efficiency above 99% of H 2S but also had a higher capacity of sulfur. So it was very advantageous for purification of H 2S in low concentration.

• 用Fe2 + 作催化剂 ,溶液的净化效率可达 99%25以上 ,且硫容量也较大 ,对低浓度H2 S的净化相当有利。