| 一种新的三元金属氢化物Mg2CoH5的制备及性质研究 |
| PREPARATION AND CHARACTERISTICS OF A NEW TERNARY METAL HYDRIDE Mg2CoH5 |
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| 摘要: 由金属镁粉和钴粉,在350—500℃,15—50巴氢压下,制备了新的三元金属氢化物Mg2CoH5. X粉末衍射证实,在400℃以下得到的氢化物为四方结构,其晶胞参数为a=4.4862Å,c=6.615Å在高于425℃时得到的氢化物为六方结构,其a=4.6754Å,c=10.0907Å.同时还测得了它的吸放氢速度,根据压力组成等温线的测定,求得了分解热焓.比表面、导电、催化性能也进行了测定. |
| 关键词: 平台压力 压力组成等温线 比表面 电导 |
| 基金项目: |
| Abstract: A new ternary metal hydride Mg2CoH5 has been synthesised using Mg and Co powder under the conditions of 350-500 C and 15-50 bar hydrogen pressure.The X-ray powder diffraction shows two kinds of lattices below 400℃ it is tetragonal, a=4,4862Å c=6,615.4Å and above 425℃, it is hexagonal a=4.6754Å c=10.090Å. The rate of hydrogen absorption and disorption of Mg2CoH5 has been studied. The dissociation enthalpy of this hydride has been obtained from the isotherm of pressure-composition-temperature.The characteristics of specific surface, conductivity and catalysis were also determined. |
| Keywords: plateau pressure pressure-composition-temperature isotherms specific surface conductivity |
| 投稿时间：1986-09-29 |
| 摘要点击次数: 1355 |
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| 阎杰.一种新的三元金属氢化物Mg2CoH5的制备及性质研究[J].无机化学学报,1987,3(4):77-86. |
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