Room Temperature Synthesis of Metal Hydride

金属氢化物的室温合成

• 批准号: 04805069
• 负责人: TOKUMITSU Kazuto
• 金额: $ 1.22万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04805069/
• 关键词: Metal Hydride; Hydrogen Storage Alloy; Ball-Milling; Mechanochemistry; Mechanical Aloying; Tiatanium; Niobium; ミクロヘキサン; 脱水素反応; テトラリン

We examined the room temperature systhmysis of metal hydrides by the coercively induced dehydrogenation reaction of hydrocarbons. 4A element(Ti) and 5A elements (V,Nb, Ta) were instituted. For hydrocarbons, which are the source of hydrogen, we used cyclohexane at the first term and tetraline at the second term. Both of metal powders and liquid hydrocarbons are ball-milled in the zirconia vial. We measured X-ray diffraction, SEM observation, thermal desorption spectroscopy of hydrogen, GC and GC-MASS.After milling, MH2 type (TiH2) and MH type (Vh, NbH,TaH) hydrides were obtained at room temperature and at 1 atm. The time required was 500h for cyclohexane and 50h for tetraline. From the GC and GC-MASS measurement, it was indicated that the synthesis reaction of metal hydride was the simple dehydrogenation one, as follows ;*From the TDS measurements the single desorption was detected for 4A hydrides and the double desorption for 5A hydrides. This means that the site of hydrogen atom and the nature of the bonding between metal atoms and hydrogen atoms are deferent each other in MH and MH2 hydrides.

本文研究了由烃类的热诱导脱氢反应来合成金属硫化物的方法。加入4A元素（Ti）和5A元素（V、Nb、Ta）。对于作为氢源的烃，我们在第一项中使用环己烷，在第二项中使用四氢化萘。金属粉末和液态碳氢化合物都在氧化锆小瓶中进行球磨。通过X射线衍射、扫描电镜观察、氢热脱附谱、气相色谱和气相色谱-质谱联用等测试手段，在室温和1个大气压下球磨，得到了MH_2型（TiH_2）和MH型（Vh，NbH，TaH）相。环己烷和四氢化萘的反应时间分别为500小时和50小时。由GC和GC-MASS测定表明，金属氢化物的合成反应为简单的脱氢反应，其结果如下：* 由TDS测定发现，4A H2O为单脱附，5A H2O为双脱附。这说明MH和MH_2中氢原子的位置和金属原子与氢原子的键合性质是不同的。

项目成果

K.Tokumitsu: "MECHANOCHEMICAL REACTION OF METALS AND HYDROCARBONS" CATALYSIS TODAY. 18. 341-348 (1993)

K.Tokumitsu：“金属和碳氢化合物的机械化学反应”今天的催化。

K.Tokumitsu: "MECHANOCHEMICAL RAECTION BETWEEN METALS AND HYDROCARBONS" Catalysis Today. 16. 341-348 (1993)

K.Tokumitsu：“金属和碳氢化合物之间的机械化学反应”今日催化。

K.Tokumitsu: "MECHANOCHEMICAL REACTION BETWEEN METALS AND HYDROCARBONS" Catalysis Today. 16. 341-348 (1993)

K.Tokumitsu：“金属和碳氢化合物之间的机械化学反应”今日催化。