Preparation and properties of novel microporous metal oxides

新型微孔金属氧化物的制备及性能

基本信息

批准号：
07454188
负责人：
ISHIKAWA Tatsuo
金额：
$ 4.99万
依托单位：
Osaka Kyoiku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

项目摘要

In this study, we could obtain many results on the preparation and properties of novel microporous metal oxides. The main results of the obtained ones are as follows.1) Preparation of hematite particles with uniform microporesThe hematite particles with slit-shaped pores with uniform width of 1nm were synthesized from delta-FeOOH.These particles exhibit a high adsorption selectivity and is suitable for catalysts and their carriers.2) Synthesis of ferrimagnetic porous metal oxidesThe Fe ions of delta-FeOOH are rather easily replaced with divalent metal ions, deferent from the other ferric oxyhydroxides. The ferric oxide particles containing divalent metal ions were produced by treating delta-FeOOH doped with various divalent metal ions at elevated temperatures. The formed particles had uniform micropores and were ferrimagnetic. This material can be used as adsorbents for drag delivery system and adsorbent and catalysts capable of moving and fixing with a magnetic filed.3) Preparation of porous magnetite with a high stability to oxidationThe high stable magnetite particles were obtained by doping a slight amount of Co and Ni. The Fe (II) contents of the formed particled were much larger than as usual magnetite. The electrical conductivity of the obtained magnetites was higher in two order than a commercial one. These magetites are able to be employed for chemical sensors.4) Control of the pore structure of aluminum phosphatesThe spherical aluminum phosphate particles were prepared in the presence of Fe (III) , Co (II) , Zn (II) and Mn (II) ions. The doped metal ions were not contained in the particles and developed the porosity besides Fe. This method can be applied for controlling of the pore structure of aluminum phosphate particles.

在这项研究中，我们可以获得许多有关新型微孔金属氧化物的制备和特性的结果。所获得的主要结果如下。1）制备具有均匀的微孔浸血颗粒的赤铁矿颗粒，具有缝隙形孔，宽度为1nm的缝隙孔均匀为1nm。从Delta-feooh合成。这些颗粒具有高吸附性的选择性，表现出高度的选择性，适合催化剂和其载体。 Delta-feOOH很容易被二价金属离子所取代，并从其他氧化亚氧化铁含量中脱颖而出。通过在升高温度下用各种二价金属离子掺杂的Delta-feOOH产生含有二价金属离子的铁氧化物颗粒。形成的颗粒具有均匀的微孔，是铁磁性的。该材料可用作拖放递送系统的吸附剂，以及能够用磁性归档移动和固定的吸附剂和催化剂。3）制备具有较高氧化的多孔磁铁矿，通过掺杂少量的CO和Ni，可以获得高稳定的磁铁矿颗粒的高稳定性。形成的颗粒的Fe（II）含量比像往常一样大得多。所获得的磁铁矿的电导率在两阶的高度高于商业电导率。这些岩石能够用于化学传感器。4）在FE（III），CO（II），Zn（ii），II）和Mn（II）离子的存在下制备了磷酸铝磷酸铝颗粒的孔结构。掺杂的金属离子不包含在颗粒中，而是Fe以外的孔隙率。该方法可以用于控制磷酸铝颗粒的孔结构。