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Recent progress towards solar energy integration into low-pressure green ammonia production technologies

Klaas, Lena and Guban, Dorottya and Roeb, Martin and Sattler, Christian (2021) Recent progress towards solar energy integration into low-pressure green ammonia production technologies. International Journal of Hydrogen Energy, 46 (49), pp. 25121-25136. Elsevier. doi: 10.1016/j.ijhydene.2021.05.063. ISSN 0360-3199.

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Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0360319921017833?via%3Dihub


Large progress has been made in the last decades to reduce the carbon footprint of ammonia, which is an essential commodity of the food, chemical and energy industry. Apart from alternative routes for green feedstock production, such as hydrogen via electrolysis and nitrogen via solar thermochemical methods, alternatives are explored to replace the Haber-Bosch process. The present article reviews four promising mild condition ammonia production methods: solid state synthesis, molten salt synthesis, thermochemical looping and photocatalytic routes. Contrary to the Haber-Bosch method, which requires high pressures of 200–400 bar, they operate at low-pressures, furthermore such routes open the possibility for direct ammonia production from H2O and N2 without the intermediate hydrogen production step. These advantages allow easier renewable energy integration; however, R&D activities are needed for scaling-up. An analysis is given on renewable energy integration with focus on solar resources both in the form of electricity and heat.

Item URL in elib:https://elib.dlr.de/146070/
Document Type:Article
Title:Recent progress towards solar energy integration into low-pressure green ammonia production technologies
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Klaas, LenaUNSPECIFIEDhttps://orcid.org/0000-0003-0671-2335UNSPECIFIED
Guban, DorottyaUNSPECIFIEDhttps://orcid.org/0000-0001-7183-6401UNSPECIFIED
Roeb, MartinUNSPECIFIEDhttps://orcid.org/0000-0002-9813-5135UNSPECIFIED
Sattler, ChristianUNSPECIFIEDhttps://orcid.org/0000-0002-4314-1124UNSPECIFIED
Date:12 June 2021
Journal or Publication Title:International Journal of Hydrogen Energy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 25121-25136
Keywords:Ammonia production Solid-state ammonia synthesis Molten-salt ammonia synthesis Solar thermochemical looping Photochemical Concentrated solar power
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:Chemical Energy Carriers
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Solar Fuels
Location: Jülich , Köln-Porz
Institutes and Institutions:Institute of Future Fuels
Institute of Future Fuels > Solar-Chemical Process Development
Deposited By: Bülow, Mark
Deposited On:07 Jan 2022 11:58
Last Modified:07 Jan 2022 11:58

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