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％．
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(NO_3)_3 supported on carbon molecular sieves is transformed into Fe_2O_3,FeO,Fe(NO_3)_2 and Fe_3O_4,in which the paramagnetic Fe_3O_4 takes a part of about 29%.
出处
《煤炭转化》
CAS
CSCD
北大核心
1996年第1期53-56,共4页
Coal Conversion
基金
国家自然科学基金
关键词
炭分子筛
铁
分子筛
carbon molecular sieves,iron species,Mssbauer spectrum,air separation
