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2‐(N‐Methylbenzyl)pyridine: A Potential Liquid Organic Hydrogen Carrier with Fast H2 Release and Stable Activity in Consecutive Cycles
ChemSusChem ( IF 7.5 ) Pub Date : 2018-01-18 , DOI: 10.1002/cssc.201702256
Jinho Oh 1 , Kwanyong Jeong 2 , Tae Wan Kim 1 , Hyunguk Kwon 3 , Jeong Woo Han 4 , Ji Hoon Park 2 , Young-Woong Suh 1, 5
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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:

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。
更新日期:2018-01-18
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