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摻雜NaAlH4放氫性能的研究
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國(guó)家自然科學(xué)基金 (50806007)


Study on the Dehydrogenation of Doped NaAlH4
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    摘要:

    采用PCT (pressure-conten-temperature)、XRD等測(cè)試方法對(duì)摻雜Ag2SO4、SrCO3、TiO2和ZnO的NaAlH4放氫性能進(jìn)行研究。結(jié)果顯示，摻雜TiO2的NaAlH4試樣具有最大的放氫量，而摻雜SrCO3的試樣放氫量最小，并且對(duì)比所有摻雜試樣在第1階段的放氫速率發(fā)現(xiàn)，摻雜TiO2的NaAlH4試樣具有最大的放氫速率，在整個(gè)放氫性能的測(cè)試過(guò)程中，試樣表現(xiàn)出了明顯的2個(gè)分解階段，并且在第1階段的分解速率明顯大于第2階段。此外，摻雜TiO2和ZnO試樣的XRD結(jié)果表明，摻雜試樣經(jīng)過(guò)30 min的球磨之后，試樣的晶體結(jié)構(gòu)沒(méi)有發(fā)生明顯變化，并且沒(méi)有新的物相生成，這說(shuō)明NaAlH4具有很好的穩(wěn)定性

    Abstract:

    The dehydrogenation properties of NaAlH4 doped with Ag2SO4, SrCO3, TiO2 and ZnO were studied by PCT (pressure-content-temperature) and XRD. The results indicate that NaAlH4 doped with TiO2 presents the largest amount of hydrogen release, comparatively, the sample doped with SrCO3 presents the least amount of hydrogen release. Compared to the rate of hydrogen release of all doped samples in the first stage, NaAlH4 doped with TiO2 shows the maximum rate of hydrogen release. In addition, all of the doped samples display an obvious two-stage dehydrogenation in the whole process of hydrogen release, and it is obvious that the dehydrogenation rate in the first stage is faster than that in the second stage. The results from XRD patterns prove that 30 min ball-milling does not cause any structure change and new phase appearing.

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鄭雪萍,劉狀壯,馬秋花,劉澤恩,劉勝林.摻雜NaAlH4放氫性能的研究[J].稀有金屬材料與工程,2012,41(4):627~630.[Zheng Xueping, Liu Zhuangzhuang, Ma Qiuhua, Liu Ze’en, Liu Shenglin. Study on the Dehydrogenation of Doped NaAlH4[J]. Rare Metal Materials and Engineering,2012,41(4):627~630.]
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  • 收稿日期:2011-04-05
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