Mn型分子筛的合成与表征  

Synthesis and Characterization of Mn Branch Sieves

作　　者：章长江[1] 孙尧俊 黄月芳 

机构地区：[1]复旦大学分析测试中心

出　　处：《复旦学报（自然科学版）》1999年第6期673-677,680,共6页Journal of Fudan University：Natural Science

基　　金：国家自然科学基金!29236120

摘　　要：MnO4-与Mn2+在强碱性的条件下用氧化还原方法制得层状结构的Na－Birnessite，再经过离子交换与转晶，得到了由MnO6八面体共边形成的具有3×3孔道结构的标型分子筛（Todorokite），它的孔径为0．69nm．用X射线粉末衍射（XRD）、傅立叶变换红外光谱（FT－IR）、BET、透射电镜（TEM）等方法对其性质进行了表征．研究表明Todorokite具有良好的热稳定性，且有较强的L酸．Using Oxidized-Reduction method of layer type construction was prepared through MnO4 reacting with Mn2+ in strong base solution. Then though ion-exchange and crystal-transformation, the Mn branch sieve Todorokite with 3×3 tunne1 construction formed by three co-edge MnO6 was obtained, and its tunnel radius is 0. 69 nm. It was characterized with X-Ray Powder Diffraction, FT-IR, BET, Transmission Electronic Mi-croscopy. The results show that Todorokite has good thermo-stability and strong lewis acid.

关 键 词：TODOROKITE 酸位 分子筛 合成 表征 锰型分子征 

分 类 号：TQ424.25[化学工程] O643.36[理学—物理化学]