高等学校化学学报2012，Vol.33Issue(4)：781-785,5.DOI:10.3969/j.issn.0251-0790.2012.04.024
Fe2O3与TiF3添加剂对LiBH4-MgH2复合氢化物体系的协同催化作用
Synergistic Catalysis of Fe2O3 and TiF3 Additives on the LiBH4-MgH2 Composite
摘要
Abstract
Five systems (2LiBH4-MgH2, 2LiBH4-MgH2-10% Fe2O3, 2LiBH4-MgH2-10% TiF3, 2LiBH4-MgH2-5%Fe20,-5%TiF3 and 2LiBH4-MgH2-10% Fe2O3-10%TiF3) were prepared by ball milling. They were investigated through thermogravimeteric analysis (TG) , diffraction scanning calorimetric ( DSC ) , powder X-ray diffraction (XRD), Fourier transformed infrared spectrometer (FTIR) and pressure-content-temperature (PCT). The addition of Fe2O3 and TiF3 improved the hydrogen release property of the LiBH4-MgH2 complex system effectively. Especially, the codoped system (2LiBH4-MgH2-10% Fe2O3-10% TiF3) starts to release hydrogen at around 110 °C and can release as much as 9.6%. Besides, the results of PCT show that the codoped system (2LiBH4-MgH2-5% Fe2O3-5% TiF3 ) can release about 8.6% hydrogen within 10 min at 400 ℃. The properties of the codoped system are better than the other two single doped systems, which partly incarnated the synergistic catalysis of Fe2O3 and TiF3.关键词
LiBH4/MgH2/Fe2O3/TiF3/协同催化Key words
LiBH4/ MgH2/ Fe2O3/ TiF3/ Synergistic catalysis分类
化学化工引用本文复制引用
张慧,焦成丽,王爽,李志宝,刘双,李芬,周奕汐,孙立贤,曹忠,徐芬,刘淑生,张箭,宋莉芳,司晓亮..Fe2O3与TiF3添加剂对LiBH4-MgH2复合氢化物体系的协同催化作用[J].高等学校化学学报,2012,33(4):781-785,5.基金项目
国家“九七三”计划项目(批准号:2010CB631303)、国家自然科学基金(批准号:20833009,51071146,21173111,20903095,51071081,51101145,U0734005,51102230)和广东省-中国科学院联合基金(批准号:2010A090100034)资助. （批准号:2010CB631303）
