【摘要】 用Ｍ　ｓｓｂａｕｅｒ谱法测定了载铁炭分子筛中铁的存在形态。结果表明，经焙烧和还原后，担载在炭分子筛上的Ｆｅ（ＮＯ_３）_３有７５％～７７％转变为Ｆｅ_２Ｏ_３，ＦｅＯ，Ｆｅ（ＮＯ_３）_２和Ｆｅ_３Ｏ_４，其中有益于提高炭分子筛空分选择性的磁性Ｆｅ_３Ｏ_４的含量约２９％．更多还原

【Abstract】 A study on the states of iron species supported on carbon mole cular sieves has been carried out with Mossbauer spectra. The result shows that through calcination and reduction 75%～77%of the Fe（NO₃）₃ supported on carbon molecular sieves is transformed into Fe₂O₃,FeO,Fe（NO₃）₂ and Fe₃O₄,in which the paramagnetic Fe₃O₄ takes a part of about 29%.更多还原