A Reversible Liquid Organic Hydrogen Carrier System Based on Methanol‐Ethylenediamine and Ethylene Urea. Issue 15 (6th March 2019)

• Record Type: Journal Article
• Authors: Xie, Yinjun; Hu, Peng; Ben‐David, Yehoshoa; Milstein, David
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 15(2019)
• Page Start: 5105
• Page End: 5109
• Publication Date: 2019-03-06
• Subjects: ethylenediamine -- hydrogen storage -- methanol -- ruthenium pincer complex -- urea hydrogenation; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201901695
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: A novel liquid organic hydrogen carrier (LOHC) system, with a high theoretical hydrogen capacity, based on the unpresented hydrogenation of ethylene urea to ethylenediamine and methanol, and its reverse dehydrogenative coupling, was established. For the dehydrogenation only a small amount of solvent is required. This system is rechargeable, as the H2 ‐rich compounds could be regenerated by hydrogenation of the resulting dehydrogenation mixture. Both directions for hydrogen loading and unloading were achieved using the same catalyst, under relatively mild conditions. Mechanistic studies reveal the likely pathway for H2 ‐lean compounds formation. Abstract : Renewable energy carrier : The first example of ethylene urea hydrogenation to ethylenediamine and methanol was developed. Based on this, a rechargeable hydrogen‐storage system was established.