Department of Chemical Engineering, Hanyang University, Wangsimni-ro 222, 04763, Seoul, Republic of Korea.
Carbon Resources Institute, Korea Research Institute of Chemical Technology, Gajeong-ro 141, Yuseong-gu, 34114, Daejeon, Republic of Korea.
ChemSusChem. 2018 Feb 22;11(4):661-665. doi: 10.1002/cssc.201702256. Epub 2018 Jan 18.
The liquid organic hydrogen carrier (LOHC) 2-(N-methylbenzyl)pyridine (MBP) shows good potential for H storage based on reversible hydrogenation and dehydrogenation, with an H storage density of 6.15 wt %. This material and the corresponding perhydro product (H -MBP) are liquids at room temperature. Remarkably, H release is much faster from H -MBP over Pd/C than from the benchmark perhydro benzyltoluene over Pt/C at lower temperatures than 270 °C, owing to the addition of N atom into the benzene ring. Since this positive effect is unfavorable to the hydrogenation reaction, more Ru/Al O catalyst or prolonged reaction time must be applied for complete H storage. Experiments with repeated hydrogenation-dehydrogenation cycles reveal that reversible H storage and release are possible without degradation of the MBP/H -MBP pair. The prepared MBP satisfies the requirements for chemical stability, handling properties, and cytotoxicity testing.
液体有机氢载体（LOHC）2-（N-甲基苄基）吡啶（MBP）具有基于可逆加氢和脱氢的良好储氢潜力，储氢密度为 6.15wt%。这种材料及其相应的全氢产物（H-MBP）在室温下为液体。值得注意的是，与 Pt/C 上的基准全氢苄基甲苯相比，在低于 270°C 的温度下，H-MBP 在 Pd/C 上的 H 释放速度要快得多，这是由于苯环中添加了 N 原子。由于这种积极的影响不利于加氢反应，因此必须使用更多的 Ru/Al O 催化剂或延长反应时间才能完全储存 H。经过多次加氢-脱氢循环实验，证明了 MBP/H-MBP 对的可逆储氢和释放是可行的，而不会导致降解。所制备的 MBP 满足化学稳定性、处理性能和细胞毒性测试的要求。
