具有Ruddlesden-Popper结构的Ca_(1+x)Mn_xO_(1+3x)(x=1,2,3)的合成及层间Ca^(2+)的抽出  

SYNTHESIS OF Ca_(1+x)Mn_xO_(1+3x) (x=1,2,3) COMPOUNDS WITH THE RUDDLESDEN-POPPER STRUCTURES AND EXTRACTION OF THEIR INTERLAYER Ca^(2+) IONS

作　　者：林双妹[1] 黄侦勇[1] 孙妍[1] 王晓蓉[1] 汤睿昆[1] 马淑兰[1] 杨晓晶[1] 

机构地区：[1]北京师范大学化学学院,北京100875

出　　处：《北京师范大学学报（自然科学版）》2009年第4期370-374,共5页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(20671012);留学回国人员科研启动基金资助项目

摘　　要：采用溶胶凝胶法合成前驱体,然后在氧气气氛下加热合成了具有层状钙钛矿Ruddlesden-Popper结构的化合物Ca1+xMnxO1+3x(x=1,2,3),尝试采用酸溶液对其层间Ca2+离子进行抽出.实验发现HCl处理单层Ca2MnO4,层状结构遭到破坏;而用(NH4)2S2O8与HCl的混合溶液处理则能维持其层状结构,且Ca2+离子抽出率大于60%,其抽出机制为氧化还原和离子交换.用HCl能够抽出双层Ca3Mn2O7的层间Ca2+,并保持较好的结构.Ca1＋xMnxO1＋3x（x=1,2,3） compounds with a layered perovskite Ruddlesden-Popper structures were synthesized. First a precursor was prepared by a sol-gel process, this was followed by heating in an oxygen atmosphere. Extraction of Ca^2＋ ions in the interlayer was carried out by acid treatment. Mono-layered Ca2MnO4 after going through a HCl solution had the layered structure demolished; whereas going through a mixed solution of （NH4）2 S2O8 and HCl had the Ca^2＋ ions extracted at a rate larger than 60% whilst retaining the layered structure, through redox reaction and ion-exchange. HCl solution can extract interlayer Ca^2＋ ions from bilayered Ca3 Mn2 O7 without disrupting the layered structure.

关 键 词：层状钙钛矿结构 锰氧化物 合成 钙离子抽出 

分 类 号：TQ085.4[化学工程] Q945.172[生物学—植物学]