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Title: Converting Wind Energy to Ammonia at Lower Pressure

Journal Article · · ACS Sustainable Chemistry & Engineering

Renewable wind energy can be used to make ammonia. However, wind-generated ammonia costs about twice of that made from a traditional fossil-fuel driven process. To reduce the production cost, we replace the conventional ammonia condensation with a selective absorber containing metal halides, e.g. calcium chloride, operating at near synthesis temperatures. With this reaction-absorption process, ammonia can be synthesized at 20 bar from air, water, and wind-generated electricity, with rates comparable to the conventional process running at 150-300 bar. In our reaction-absorption process, the rate of ammonia synthesis is now controlled not by the chemical reaction, but largely by the pump used to recycle the unreacted gases. The results suggest an alternative route to distributed ammonia manufacture which can locally supply nitrogen fertilizer and also a method to capture stranded wind energy as a carbon-neutral liquid fuel.

Research Organization:
Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Grant/Contract Number:
AR0000804
OSTI ID:
1412658
Alternate ID(s):
OSTI ID: 1434926
Journal Information:
ACS Sustainable Chemistry & Engineering, Vol. 6, Issue 1; ISSN 2168-0485
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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Cited By (4)

Sustainable Non‐Thermal Plasma‐Assisted Nitrogen Fixation—Synergistic Catalysis journal July 2019
Optimisation of the Autothermal NH3 Production Process for Power-to-Ammonia journal December 2019
Effect of the TiO 2 crystal structure on the activity of TiO 2 -supported platinum catalysts for ammonia synthesis via the NO–CO–H 2 O reaction journal January 2019
Current and future role of Haber–Bosch ammonia in a carbon-free energy landscape text January 2020

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