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Title: Chemical Looping of Manganese to Synthesize Ammonia at Atmospheric Pressure: Sodium as Promoter
Abstract

Affordable synthetic ammonia (NH3) enables the production of nearly half of the food we eat and is emerging as a renewable energy carrier. Sodium‐promoted chemical looping NH3synthesis at atmospheric pressure using manganese (Mn) is here demonstrated. The looping process may be advantageous when inexpensive renewable hydrogen from electrolysis is available. Avoiding the high pressure of the Haber‐Bosch process by chemical looping using earth‐abundant materials may reduce capital cost, facilitate intermittent operation, and allow operation in geographic areas where infrastructure is less sophisticated. At this early stage, the data suggest that 0.28 m3of a 50 % porosity solid Mn bed may suffice to produce 100 kg NH3per day by chemical looping, with abundant opportunities for improvement.

 
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Award ID(s):
1856084
NSF-PAR ID:
10255134
Author(s) / Creator(s):
 ;  ;  
Publisher / Repository:
Wiley Blackwell (John Wiley & Sons)
Date Published:
Journal Name:
Chemical Engineering & Technology
Volume:
43
Issue:
10
ISSN:
0930-7516
Page Range / eLocation ID:
p. 2126-2133
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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