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A Reversible Liquid‐to‐Liquid Organic Hydrogen Carrier System Based on Ethylene Glycol and Ethanol
Author(s) -
Zhou QuanQuan,
Zou YouQuan,
BenDavid Yehoshoa,
Milstein David
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202002749
Subject(s) - dehydrogenation , ethylene glycol , hydrogen , hydrogen storage , gravimetric analysis , chemistry , solvent , ethanol , ruthenium , liquid hydrogen , inorganic chemistry , materials science , chemical engineering , catalysis , organic chemistry , engineering
Liquid organic hydrogen carriers (LOHCs) are powerful systems for the efficient unloading and loading molecular hydrogen. Herein, a liquid‐to‐liquid organic hydrogen carrier system based on reversible dehydrogenative coupling of ethylene glycol (EG) with ethanol catalysed by ruthenium pincer complexes is reported. Noticeable advantages of the current LOHC system is that both reactants (hydrogen‐rich components) and the produced esters (hydrogen‐lean components) are liquids at room temperature, and the dehydrogenation process can be performed under solvent and base‐free conditions. Moreover, the hydrogenation reaction proceeds under low hydrogen pressure (5 bar), and the LOHC system has a relatively high theoretical gravimetric hydrogen storage capacity (HSC>5.0 wt %), presenting an attractive hydrogen storage system.