Clean Conversion of Aqueous Ammonia Using a Solid Oxide Cell

M. Ragu, C. J. Laycock, G. Owen, G. Lloyd, A. Guwy

Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddCyfraniad i gynhadleddadolygiad gan gymheiriaid

11 Wedi eu Llwytho i Lawr (Pure)

Crynodeb

Waste aqueous ammonia is produced in significant quantities as part of coke production processes required for steelmaking. In this work, the utilization of a simulated aqueous ammonia waste (ammonium hydroxide) was investigated using a commercially available anode-supported solid oxide cell. The electrical performance of the cell was characterized using I-V curves and the output gases from the anode were measured in real-time using quadrupole mass spectrometry. Upon delivery to the anode, there was total decomposition of ammonia to form hydrogen and nitrogen with no NO xformation observed. The cell operated more efficiently in fuel cell mode due to alleviation of OCV, activation, and concentration losses. In electrolysis mode, the cell produced H2through a mixture of catalytic ammonia decomposition (48 vol%) and electrochemical H2O reduction (52 vol%) to yield output gas mixtures composed of 90-93 vol% H2(voltage dependent) balanced only in N2.

Iaith wreiddiolSaesneg
TeitlECS Transactions
Man cyhoeddiUnited Kingdom
CyhoeddwrIOP Publishing Ltd.
Tudalennau2173-2184
Nifer y tudalennau12
Cyfrol103
ISBN (Electronig)978-1607685395
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 18 Gorff 2021
Digwyddiad17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Sweden
Hyd: 18 Jul 202123 Jul 2021

Cyfres gyhoeddiadau

EnwECS Transactions
Rhif1
Cyfrol103
ISSN (Argraffiad)1938-6737
ISSN (Electronig)1938-5862

Cynhadledd

Cynhadledd17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Gwlad/TiriogaethSweden
DinasStockholm
Cyfnod18/07/2123/07/21

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