高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (8): 1953.doi: 10.7503/cjcu20121095

• 物理化学 • 上一篇    下一篇

Al-LiBH4复合材料的制备与产氢性能

刘昊1,3, 徐芬2, 孙立贤2,3, 曹忠1, 周怀营2   

  1. 1. 长沙理工大学化学与生物工程学院, 长沙 410004;
    2. 桂林电子科技大学材料科学与工程学院, 桂林 541004;
    3. 中国科学院大连化学物理研究所材料热化学实验室, 大连 116023
  • 收稿日期:2012-12-04 出版日期:2013-08-10 发布日期:2013-07-19
  • 通讯作者: 孙立贤,男,博士,研究员,博士生导师,主要从事热化学和储氢研究.E-mail:lxsun@dicp.ac.cn;曹忠,男,博士,教授,主要从事生物纳米传感和能源材料研究.E-mail:zhongcao2004@163.com E-mail:lxsun@dicp.ac.cn;zhongcao2004@163.com
  • 基金资助:

    国家自然科学基金(批准号: 21173111, 51071081, 51071146, 21075011)和国家"九七三"计划项目(批准号: 2010CB631303, 2012BAD31B08)资助.

Preparation and Hydrogen Generation for Al-LiBH4 Composite Materials

LIU Hao1,3, XU Fen2, SUN Li-Xian2,3, CAO Zhong1, ZHOU Huai-Ying2   

  1. 1. School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, China;
    2. Faculty of Material Science & Engineering, Guilin University of Electrical Technology, Guilin 541004, China;
    3. Materials and Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
  • Received:2012-12-04 Online:2013-08-10 Published:2013-07-19
  • Contact: LiXian SUN E-mail:lxsun@dicp.ac.cn;zhongcao2004@163.com

摘要:

采用机械球磨法制备了Al-LiBH4系列铝基复合材料. 该材料的产氢性能和X射线衍射(XRD)分析结果表明, 反应温度升高有利于金属铝和LiBH4 之间的相互促进作用, 提高材料的氢气产量及产率. 常温下该复合材料与水反应迅速, 氢气产量高. 球料比30:1、 球磨5 h制备的Al-25% LiBH4复合材料30 min内每克材料可以产生720 mL氢气; 当反应温度升高至90℃时, 在30 min内的氢气产量高达2026 mL/g, 氢气产率达95%; 而在90℃反应时Al-30%LiBH4材料的氢气产量为2211 mL/g, 氢气产率在96%以上.

关键词: Al-LiBH4 复合材料, 微量热, 制氢, 机械球磨, X射线衍射

Abstract:

Al-LiBH4 composite materials were prepared by the mechanical ball milling. The results of the hydrogen-production curves and X-ray diffraction patterns show that when the reaction temperature is higher, the mutual promotion effect between aluminum and LiBH4 will be more intensed, and the generation of hydrogen will be more. The milled materials have good properties of hydrogen generation in water at room temperature, especially for the Al-25%LiBH4(mass fraction of LiBH4 is 25%) material milled for 5 h with a ball/material ratio of 30: 1, which can produce 720 mL/g hydrogen. At 90℃, the Al-25%LiBH4 material can produce 2026 mL/g hydrogen with the hydrogen yield of 95% while the Al-30%LiBH4 material can produce 2211 mL/g hydrogen with the hydrogen yield of 96%.

Key words: Al-LiBH4 composite material, Microcalorimetry, Hydrogen generation, Mechanical ball milling, X-Ray diffraction

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