Reduction of metal oxides by mechanical alloying method

机械合金化法还原金属氧化物

• 批准号: 09555188
• 负责人: TOKUMITSU Kazuto
• 金额: $ 6.72万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555188/
• 关键词: Mechanical Alloying; Non-equilibrium reaction; Solid state reaction; Reduction; Iron oxide; Copper oxide; Silver oxide; ボールミル; 還元

The authors studied the reduction of metal oxides at room temperature and at room pressure by mechanical alloying method. The followings were examined from 1997 to 2000.from 1997 to 1998 : (1) reduction of silver oxide and copper oxide with carbon(2) preparation of Mossbauer spectroscopy(3) manufacturing of mechanochemical reactorfrom 1998 to 1999 : (4) reduction of iron with metallic elements(5) preparation of ceramic reaction system(6) manufacturing of shaker-type milling machinefrom 1999 to 2000 : (7) reduction of iron oxides with hydrogen and methane gas(8) evaluation of the stability of-iron oxides(9) preparation of α-Fe/magnetite complex particle and cell-structured magnetite particle.It was demonstrated that metal oxides were reduced without thermal activation. In particular, several nanometer and super-paramagnetic α-Fe cluster was discovered in reduction of iron oxide, which lead that the mechanism of reduction was able to be studied at atomic level and also the new technique to prepare atom clusters was proposed. And α-Fe/magnetite complex particle and cell-structured magnetite particle were discovered for the first time in the world which was used the catalysis for transformer of alcohol.

作者研究了在室温和常压下通过机械合金化方法还原金属氧化物。 1997年至2000年进行了以下研究。 1997年至1998年：（1）碳还原氧化银和氧化铜（2）穆斯堡尔谱的制备（3）机械化学反应器的制造，1998年至1999年：（4）金属元素还原铁（5）陶瓷反应系统的制备（6）振动式球磨机的制造，1999年至1999年 2000年：（7）用氢气和甲烷气体还原铁氧化物（8）铁氧化物的稳定性评价（9）α-Fe/磁铁矿复合颗粒和细胞结构磁铁矿颗粒的制备。证明金属氧化物无需热活化即可还原。特别是在氧化铁还原过程中发现了几种纳米级超顺磁性α-Fe团簇，使得还原机理能够在原子水平上进行研究，并提出了制备原子团簇的新技术。并在国际上首次发现α-Fe/磁铁矿复合颗粒和胞状结构磁铁矿颗粒，用于酒精变换器的催化。

项目成果

T. Nasu and K. Tokumitsu: "Deoxidation of iron oxide by ball-milling"Materials Science Forum. 269. 181-186 (1998)

T. Nasu 和 K. Tokumitsu：“球磨脱氧氧化铁”材料科学论坛。

K. Tokumitsu and T. Nasu: "Synthesis of nano-structured Fe/FeィイD23ィエD2OィイD24ィエD2 complex particle by thermal decomposition of wustite"J. Meta. & Nano-cryst. Materials.

K. Tokumitsu 和 T. Nasu：“通过维氏体热分解合成纳米结构 Fe/FeD23D2OD24D2 复合颗粒”J。

T. Nasu and K. Tokumitsu: "Reduction of iron oxide by ball-milling with hydrogen gas flow"J. Metastable & Nano-crystalline Materials.

T. Nasu 和 K. Tokumitsu：“通过氢气流球磨还原氧化铁”J。

K. Tokumitsu: "Atomic distribution of Fe-Cu solid solution prepared by mechanical alloying"J. Meta. & Nano-cryst. Mater.. 2. 405-410 (1999)

K.Tokumitsu：“机械合金化制备的Fe-Cu固溶体的原子分布”J。

K.Tokumitsu and T.Nasu: "水素ガス還流メカニカルアロイング法によるヘマタイトからの超微細結晶粒鉄の生成"固体の反応性. 10. 167-170 (1999)

K. Tokumitsu 和 T. Nasu：“通过氢气回流机械合金化法从赤铁矿生产超细晶粒铁”，《固体反应性》，10. 167-170 (1999)。