The liquid organic hydrogen carrier (LOHC) 2‐(N‐methylbenzyl)pyridine (MBP) shows good potential for H₂ storage based on reversible hydrogenation and dehydrogenation, with an H₂ storage density of 6.15 wt %. This material and the corresponding perhydro product (H₁₂‐MBP) are liquids at room temperature. Remarkably, H₂ release is much faster from H₁₂‐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/Al₂O₃ catalyst or prolonged reaction time must be applied for complete H₂ storage. Experiments with repeated hydrogenation–dehydrogenation cycles reveal that reversible H₂ storage and release are possible without degradation of the MBP/H₁₂‐MBP pair. The prepared MBP satisfies the requirements for chemical stability, handling properties, and cytotoxicity testing.

中文翻译：

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2-（N-甲基苄基）吡啶：潜在的液态有机氢载体，在连续循环中具有快速释放H2和稳定活性的作用

液态有机氢载体（LOHC）2-（N-甲基苄基）吡啶（MBP）基于可逆的氢化和脱氢显示出H _2的良好储存潜力，H _2的储存密度为6.15 wt％。该物质和相应的过氢产物（H ₁₂ -MBP）在室温下为液体。值得注意的是，由于在苯环中添加了N原子，因此在高于270°C的温度下，Pd / C上H ₁₂ -MBP的H ₂释放速度要比Pt / C上基准的全氢苄基甲苯的释放快得多。由于这种积极作用不利于氢化反应，因此需要更多的Ru / Al ₂ O _3。为了完全储存H _2，必须使用催化剂或延长反应时间。重复加氢-脱氢循环的实验表明，可逆的H ₂储存和释放是可能的，而不会降解MBP / H ₁₂ -MBP对。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。