NaBH4 Geopolymer Composites
NaBH4 Geopolymer Composites
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NaBH4 地质聚合物复合材料
DOI：
10.1002/9781119040293.ch1
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
F. Kiesel
中科院分区：
文献类型：
--
作者：
L. Schomborg;C. H. Rüscher;J. C. Buhl;F. Kiesel
在地质聚合物型基质中处理NaBH 4很容易，可以在开放条件下进行。与地质聚合物凝胶可以被视为母体化合物的任何相关沸石化合物相比，可以储存更高浓度的氢，更高且更容易。通过对参数变化的系统研究，可以估计出NaBH 4地质聚合物复合材料最高氢释放的优化参数：这些参数是在85 °C下干燥，NaBH 4/固体比R = 0.75，Si/Al摩尔比为2.6。使用这些条件合成的样品每100 mg释放180 ml氢。与纯NaBH 4盐相比，可以得出结论，与纯NaBH 4相比，通过与稀酸反应可以释放高达80%的氢。随着Si/Al比在0.5和2.6之间增加，可以实现超过10%的释放氢的增加。新型NaBH 4-地质聚合物复合材料可以提供有趣的特性，作为燃料电池应用中常见的含有30 wt% NaBH 4的碱性溶液的替代品。进一步的研究可能会显示，是否有合适的技术解决方案可用于直接应用新的复合材料。一个更普遍的问题也可能与克服NaBH 4本身的困难有关。
The handling of NaBH4in a geopolymer type matrix is easy and can be done under open conditions. It is possible to store a high concentration of hydrogen, higher and easier compared to any related zeolite compound to which geopolymer gels could be seen as the mother compounds. From a systematic study of change in parameters, somehow optimized parameters for highest hydrogen release from NaBH4geopolymer composite materials could be estimated: These are drying at 85 °C, a NaBH4/solid ratio ofR= 0.75 and a molar Si/Al ratio of 2.6. A sample synthesized using these conditions releases 180 ml hydrogen per 100 mg. In comparison to the pure NaBH4salt, it can be concluded that up to 80% hydrogen can be released by the reaction with diluted acid compared to pure NaBH4. An increase of more than 10% released hydrogen could be achieved with increasing the Si/Al ratio between 0.5 and 2.6. The new NaBH4‐geopolymer composite may offer interesting properties as an alternative to the familiar use of alkaline solution containing 30 wt% NaBH4in fuel cell applications. Further investigation may show if suitable technical solutions could be available for a direct application with the new composite. A more general question may also be related to overcome the difficulties concerning the NaBH4itself.
影响因子：
2.1
作者：
Ruescher, Claus H.;Mielcarek, Elzbieta M.;Lohaus, Ludger
通讯作者：
Lohaus, Ludger