Department of Materials Science, Fudan University, Shanghai 200433, China.
J Am Chem Soc. 2011 Apr 6;133(13):4690-3. doi: 10.1021/ja1105893. Epub 2011 Mar 10.
The strategy of using double-cations to tune the temperature and purity of dehydrogenation of ammine borohydrides is reported. The first double-cation ammine borohydride, Li(2)Al(BH(4))(5)·6NH(3), which forms a novel structure with ordered arrangement of Al(NH(3))(6)(3+) ammine complexes and Li(2)(BH(4))(5)(3-) complex anions, is found to release over 10.0 wt % hydrogen below 120 °C with favorable kinetics and high H-purity (>99%).
报道了一种利用双阳离子来调节氨硼烷脱氢温度和纯度的策略。首次发现的双阳离子氨硼烷 Li(2)Al(BH(4))(5)·6NH(3)具有有序排列的 Al(NH(3))(6)(3+)氨络合物和 Li(2)(BH(4))(5)(3-)复合阴离子的新颖结构，在低于 120°C 时可释放出超过 10.0wt%的氢气，具有良好的动力学和高 H 纯度（>99%）。
