79521-20-3Relevant academic research and scientific papers
A Reversible Liquid-to-Liquid Organic Hydrogen Carrier System Based on Ethylene Glycol and Ethanol
Zhou, Quan-Quan,Zou, You-Quan,Ben-David, Yehoshoa,Milstein, David
, p. 15487 - 15490 (2020/10/02)
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.
Synthesis of Ethylene Glycol Acetates Catalyzed by Potassium Iodide and Metal Acetate
Shimizu, Kazuo,Imamura, Juichi
, p. 3200 - 3204 (2007/10/02)
The catalytic activities of various kinds of binary systems consisting of KI and metal acetate were tested in liquid phase oxidation of ethylene in acetic acid at various pressures.KI-Mn(OCOCH3)2 was found to be the most reactive system and new material, CH3COOCH2CH2OCOCH2OCOCH3, was formed as a major by-product.It was also found that the main product at an early stage of the reaction was ethylene glycol monoacetate, from which other products were formed consecutively.It is considered that catalytic reaction does not proceed via ICH2CH2I, but via ICH2CH2OH which is formed by the oxidation of ethylene with HIO.On the basis of the rate equation and the results under various reaction conditions, a mechanism of the KI-Mn(OCOCH3)2-catalyzed reaction has been proposed.
