氧缺位铁酸锰分解CO_2成C的研究  

Studies on Decomposition of Carbon Dioxide into Carbon with Oxygen Deficient Manganous Ferrite

作　　者：王力军[1,2] 张春雷[1,2] 吴通好 李爽[1,2] 

机构地区：[1]渝州大学化学系 [2]吉林大学化学系

出　　处：《渝州大学学报》1997年第2期4-9,共6页

摘　　要：空气氧化湿法制备的ＭｎＦｅ２Ｏ４在Ｈ２还原下，生成氧缺位铁酸锰ＭｎＦｅ２Ｏ４－δ（０＜δ＜１），利用ＸＲＤ和Ｍｏｓｓｂａｕｅｒ谱等技术，对它的性质（还原性，晶格常数稳定性）进行了详细地研究，考查了在氧缺位铁酸锰（ＭｎＦｅ２Ｏ４－δ，δ＞１）及ＭｎＯ－ＦｅＯ固溶体下ＣＯ２分解成Ｃ的活性，结果表明（ＭｎＦｅ２Ｏ４－δ，δ＞１）能够有效地分解ＣＯ２成Ｃ，并且在反应以后自身转变成了化学计量的ＭｎＦｅ２Ｏ４，ＭｎＯ－ＦｅＯ分解ＣＯ２以后，一部分变为ＭｎＦｅ２Ｏ４。The oxygen deficient manganous ferrite was obtained through using H 2 reduced MnFe 2O 4 preparation of hydrothermal air oxidation method and its properties (including reducing property,lattice constants stability) were studied in detail by utilizing XRD and Mssbauer spectra.The activity of CO 2 decomposing into C with oxygen deficient manganous ferrite (MnFe 2O 4-δ ,δ>0) and the solid solution MnO FeO were investigated, and its results indicated that MnFe 2O 4-δ (δ>0) was able to efficiently decompose CO 2 into C and after reaction it converted itself into stoichiometric MnFe 2O 4, after the solid solution MnO FeO having decomposed CO 2 into C,a part of MnO FeO became MnFe 2O 4, and the other part still remained in solid solution structure.

关 键 词：铁酸锰 氧缺位 稳定性 炭 催化剂 二氧化碳还原 

分 类 号：O613.71[理学—无机化学] O621.254.2[理学—化学]