Basic Research on Geopolymer Gels for Production of Green Binders and Hydrogen Storage
Basic Research on Geopolymer Gels for Production of Green Binders and Hydrogen Storage
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用于生产绿色粘合剂和储氢的地质聚合物凝胶的基础研究
DOI：
10.1002/9781118807743.ch9
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
J. Buhl
中科院分区：
文献类型：
--
作者：
C. Rüscher;Lars Schomborg;A. Schulz;J. Buhl
地质聚合物凝胶可以针对粘合剂进行优化，具有高机械强度。将报告另外两项申请。首先，NaBHj 晶体可以在地质聚合物型基质内重结晶。可以优化成分和固化条件，获得约 72 wt% 的纯 NaBH4 的氢释放。氢气的释放是通过酸滴定获得的，不需要任何催化剂。其次，可以合成微米和纳米晶体尺寸的方钠石，将 BH4 阴离子封闭在笼中。这些晶体共享地质聚合物类型基质的扩展贡献。基质存储和运输用于氢释放反应的水分子，在方钠石笼中揭示出新的阴离子物种 [H4_nB (OH) n]", n= 1, 2, 3。
Geopolymer gels could be optimized for binders, possessing high mechanical strength. Two further applications will be reported. Firstly NaBHj crystals can be recrystallized within a geopolymer type matrix. The compositions and solidification conditions could be optimized, obtaining an hydrogen release of about 72 wt% of pure NaBH4. The hydrogen release is obtained by acid titration without the requirement of any catalyst. Secondly sodalites of micro-and nanocrystalline sizes could be synthesized, enclosing the BH4-anion in the cages. The crystals share extended contributions of a geopolymer type matrix. The matrix stores and transports the water molecules for the hydrogen release reactions, revealing new anion species [H4_nB (OH) n]", n= 1, 2, 3 in the sodalite cages.