| TiF3对LiAlH4放氢性能的影响 |
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| 引用本文： | 刘淑生,孙立贤,宋莉芳,姜春红,张箭,张耀,徐芬,张志恒. TiF3对LiAlH4放氢性能的影响[J]. 高等学校化学学报, 2010, 31(4): 796 |
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| 作者姓名： | 刘淑生 孙立贤 宋莉芳 姜春红 张箭 张耀 徐芬 张志恒 |
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| 作者单位： | 1. 中国科学院大连化学物理研究所, 大连 116023; 2. 中国科学院研究生院, 北京 100049; 3. 辽宁师范大学化学化工学院, 大连 116029; 4. 中国石油管道研究中心, 廊坊 065000 |
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| 基金项目： | 国家自然科学基金，国家"八六三"计划项目，国家"九七三"计划项目，国际纯粹与应用化学联合会项目 |
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| 摘 要： | 采用X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)和热重(TG)等测试方法, 对掺杂TiF3前后和不同TiF3掺杂量LiAlH4的放氢性能进行了研究. 结果发现, 在TiF3存在下, LiAlH4在球磨过程中有少量分解. TiF3对LiAlH4放氢具有明显的催化作用. 随着掺杂量的增加, LiAlH4的起始放氢温度降低, 但放氢量会明显减少. 掺杂2%(摩尔分数)TiF3的LiAlH4从80 ℃开始放氢, 比未处理的LiAlH4的起始放氢温度降低了70 ℃, 放氢量高达6.6%(质量分数).
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| 关 键 词： | 三氟化钛 氢化铝锂 放氢 催化, |
| 收稿时间： | 2009-06-15 |
Effect of TiF3 on the Dehydrogenation of LiAlH4 |
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| LIU Shu-Sheng,SUN Li-Xian,SONG Li-Fang,JIANG Chun-Hong,ZHANG Jian,.... Effect of TiF3 on the Dehydrogenation of LiAlH4[J]. Chemical Research In Chinese Universities, 2010, 31(4): 796 |
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| Authors: | LIU Shu-Sheng SUN Li-Xian SONG Li-Fang JIANG Chun-Hong ZHANG Jian ... |
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| Affiliation: | 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China;3. Chemistry and Chemical Engineering School, Liaoning Normal University, Dalian 116029, China;4. PetroChina Pipeline R & D Center, Langfang 065000, China |
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| Abstract: | The dehydrogenation performances of as-received, ball-milled and different amounts of TiF3 doped LiAlH4 were investigated by X-ray diffraction(XRD), Fourier transformed infrared spectrometer(FTIR) and thermogravimetry(TG) measurements. It was found that LiAlH4 decomposes a little during ball milling in the presence of TiF3. TiF3 has dramatically catalyzed the dehydrogenation of LiAlH4. With increasing amount of TiF3, the initial temperature of dehydrogenation decreases to some extent, but it sacrifices the dehydrogenation amount at great cost. 2%(molar fraction) TiF3-doped LiAlH4 begins to release H2 at 80 ℃, 70 ℃ lower than as-received LiAlH4, and can release as much as 6.6%(mass fraction) H2. |
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| Keywords: | TiF3 LiAlH4 Dehydrogenation Catalyze, |
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