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2‐( N ‐Methylbenzyl)pyridine: A Potential Liquid Organic Hydrogen Carrier with Fast H 2 Release and Stable Activity in Consecutive Cycles
Author(s) -
Oh Jinho,
Jeong Kwanyong,
Kim Tae Wan,
Kwon Hyunguk,
Han Jeong Woo,
Park Ji Hoon,
Suh YoungWoong
Publication year - 2018
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201702256
Subject(s) - pyridine , hydrogen , chemistry , inorganic chemistry , materials science , organic chemistry
The liquid organic hydrogen carrier (LOHC) 2‐( N ‐methylbenzyl)pyridine (MBP) shows good potential for H 2 storage based on reversible hydrogenation and dehydrogenation, with an H 2 storage density of 6.15 wt %. This material and the corresponding perhydro product (H 12 ‐MBP) are liquids at room temperature. Remarkably, H 2 release is much faster from H 12 ‐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 2 O 3 catalyst or prolonged reaction time must be applied for complete H 2 storage. Experiments with repeated hydrogenation–dehydrogenation cycles reveal that reversible H 2 storage and release are possible without degradation of the MBP/H 12 ‐MBP pair. The prepared MBP satisfies the requirements for chemical stability, handling properties, and cytotoxicity testing.