掺杂NaAlH4放氢性能的研究

稀有金属材料与工程, 2012, 41(4): 627-630.

掺杂NaAlH4放氢性能的研究

郑雪萍 ^1, , 刘状壮 ^2, , 马秋花 ^3, , 刘泽恩 ^4, , 刘胜林 ^5,

1.长安大学,陕西西安710063

2.长安大学,陕西西安710063

3.河南工业大学,河南郑州450001

4.长安大学,陕西西安710063

5.长安大学,陕西西安710063

基金项目: 国家自然科学基金(50806007)

关键词： NaAlH4 , 掺杂 , 放氢性能

Study on the Dehydrogenation of Doped NaAlH4

采用PCT (pressure-conten-temperature)、XRD等测试方法对掺杂Ag2SO4、SrCO3、TiO2和ZnO的NaAlH4放氢性能进行研究.结果显示,掺杂TiO2的NaAlH4试样具有最大的放氢量,而掺杂SrCO3的试样放氢量最小,并且对比所有掺杂试样在第1阶段的放氢速率发现,掺杂TiO2的NaAlH4试样具有最大的放氢速率,在整个放氢性能的测试过程中,试样表现出了明显的2个分解阶段,并且在第1阶段的分解速率明显大于第2阶段.此外,掺杂TiO2和ZnO试样的XRD结果表明,掺杂试样经过30 min的球磨之后,试样的晶体结构没有发生明显变化,并且没有新的物相生成,这说明NaAlH4具有很好的稳定性.

参考文献

[1]	Bogdanovi(C) B;Schwickardi M .[J].Journal of Alloys and Compounds,1997,253-254:1.
[2]	Nakamori Y;Orimo S I .[J].Journal of Alloys and Compounds,2004,370(1-2):271-275.
[3]	Kang JK;Lee JY;Muller RP;Goddard WA .Hydrogen storage in LiAlH4: Predictions of the crystal structures and reaction mechanisms of intermediate phases from quantum mechanics[J].The Journal of Chemical Physics,2004(21):10623-10633.
[4]	Dedrick D E;Kanouff M P;Replogle B C et al.[J].Journal of Alloys and Compounds,2005,389:299.
[5]	Vajeeston P;Ravindran P;Vidya R et al.[J].Physical Review,2003,B68:212101.
[6]	Züttel A;Rentsch S;Fischer P et al.[J].Journal of Alloys and Compounds,2003,356-357:515.
[7]	Brinks H W;Jense C M;Srinivasan S S et al.[J].Journal of Alloys and Compounds,2004,376:215.
[8]	Weifang Luo;Karl J. Gross .A kinetics model of hydrogen absorption and desorption in Ti-doped NaAlH_4[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2004(1/2):224-231.
[9]	Ozolins V;Majzoub E H;Udovic T J .[J].Journal of Alloys and Compounds,2004,375:1.
[10]	Dalirn Suna;Sesha S Srinivasan;Guorong Chena et al.[J].Journal of Alloys and Compounds,2004,373:265.
[11]	Sesha S Srinivasan;Hendrik W Brinks;Bjorn C Hauback .[J].Journal of Alloys and Compounds,2004,377:283.
[12]	Gross K J;Majzoub E H;Spangler S W .[J].Journal of Alloys and Compounds,2003,356-357:423.
[13]	Gross K;Thomas G;Jensen C .[J].Journal of Alloys and Compounds,2002,330-332:683.
[14]	Anton D L .[J].Journal of Alloys and Compounds,2003,356-357:400.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

掺杂NaAlH4放氢性能的研究

Study on the Dehydrogenation of Doped NaAlH4

参考文献