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Achieving a fully renewable and clean energy landscape requires novel solutions for energy storage and recovery, in which hydrogen shows promising potential. Our group is particularly interested in the use of ammonia (NH3) as a carbon-free hydrogen carrier, to alleviate hydrogen’s costly storage and high flammability. Ammonia contains a high hydrogen content of 17.65 wt%, well above the US Department of Energy target of 5.5 wt.% gravimetric capacity for a feasible energy vector. 

Moreover, ammonia has an established distribution network and can be liquefied at far milder conditions than pure hydrogen. It can be synthesised from renewable sources by combining hydrogen from water splitting with nitrogen from the air, which makes it attractive for balancing seasonal energy demands through its intermittent renewable production. Alternatively, ammonia can be recovered from urea, in farms, municipal and industrial waste.

Our work involves the study and development of the whole ammonia sustainable energy cycle from its generation using renewable sources or waste to its distribution using existing infrastructure, storage, and the final delivery of energy.

We are developing novel catalysts for the low temperature synthesis and decomposition of ammonia by fundamental mechanistic understanding. We aim to replace the highly active state-of-the-art ruthenium catalysts by readily available metals or alloys. We are also investigating how to redefine the traditional Haber-Bosch ammonia synthesis process, as well as the recovery of ammonia and urea in waste streams with novel adsorption materials.


Recent work in this field

Showing entries based on Ammonia.

Year Type Publication
2021 Journal The Potential of Green Ammonia for Agricultural and Economic Development in Sierra Leone
 C. Smith, L. Torrente-Murciano
  One Earth, 4. (1), pp. 104–113. DOI: 10.1016/j.oneear.2020.12.015
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2021 Journal Exceeding Single-Pass Equilibrium with Integrated Absorption Separation for Ammonia Synthesis Using Renewable Energy-Redefining the Haber-Bosch Loop
 Collin Smith, Laura Torrente-Murciano
  Advanced Energy Materials, pp. 2003845. DOI: 10.1002/aenm.202003845
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2021 Journal COx-Free Hydrogen Production from Ammonia - Mimicking the Activity of Ru Catalysts with Unsupported Co-Re Alloys
 Karsten G. Kirste, Kate McAulay, Tamsin E. Bell, Dragos Stoian, Said Laassiri, Angela Daisley, Justin S.J. Hargreaves, Karina Mathisen, Laura Torrente-Murciano
  Applied Catalysis B: Environmental, 280. pp. 119405. DOI: 10.1016/j.apcatb.2020.119405
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2020 Journal Current and Future Role of Haber-Bosch Ammonia in a Carbon-Free Energy Landscape
 Collin Smith, Alfred K. Hill, Laura Torrente-Murciano
  Energy & Environmental Science, 13. (2), pp. 331–344. DOI: 10.1039/C9EE02873K
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2020 Journal XAS Investigation of Silica Aerogel Supported Cobalt Rhenium Catalysts for Ammonia Decomposition
 Karsten G. Kirste, Said Laassiri, Zhigang Hu, Dragos Stoian, Laura Torrente-Murciano, Justin S. J. Hargreaves, Karina Mathisen
  Physical Chemistry Chemical Physics, 22. (34), pp. 18932–18949. DOI: 10.1039/D0CP00558D
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2020 Journal Hydrogen Production from Ammonia Decomposition Using Co/γ-Al2O3 Catalysts - Insights into the Effect of Synthetic Method
 T.E. Bell, H. Ménard, J.-M. González Carballo, R. Tooze, L. Torrente-Murciano
  International Journal of Hydrogen Energy, 45. (51), pp. 27210–27220. DOI: 10.1016/j.ijhydene.2020.07.090
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2019 Journal COx-Free Hydrogen Production from Ammonia on Novel Cobalt Catalysts Supported on 1D Titanate Nanotubes
 H.A. Lara-García, J.A. Mendoza-Nieto, H. Pfeiffer, L. Torrente-Murciano
  International Journal of Hydrogen Energy, 44. (57), pp. 30062–30074. DOI: 10.1016/j.ijhydene.2019.09.120
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2019 Journal Ru-Based Catalysts for H2 Production from Ammonia: Effect of 1D Support
 Zhigang Hu, Julien Mahin, Sukanya Datta, Tamsin E. Bell, Laura Torrente-Murciano
  Topics in Catalysis, 62. (17-20), pp. 1169–1177. DOI: 10.1007/s11244-018-1058-3
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2019 Journal A MOF-Templated Approach for Designing Ruthenium- Cesium Catalysts for Hydrogen Generation from Ammonia
 Z. Hu, J. Mahin, L. Torrente-Murciano
  International Journal of Hydrogen Energy, 44. (57), pp. 30108–30118. DOI: 10.1016/j.ijhydene.2019.09.174
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2017 Journal Ammonia Decomposition over Cobalt/Carbon Catalysts-Effect of Carbon Support and Electron Donating Promoter on Activity
 Laura Torrente-Murciano, Alf K. Hill, Tamsin E. Bell
  Catalysis Today, 286. pp. 131–140. DOI: 10.1016/j.cattod.2016.05.041
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2017 Journal Modification of Ammonia Decomposition Activity of Ruthenium Nanoparticles by N-Doping of CNT Supports
 Tamsin E. Bell, Guowu Zhan, Kejun Wu, Hua Chun Zeng, Laura Torrente-Murciano
  Topics in Catalysis, 60. (15-16), pp. 1251–1259. DOI: 10.1007/s11244-017-0806-0
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2016 Journal H2 Production via Ammonia Decomposition Using Non-Noble Metal Catalysts: A Review
 T. E. Bell, L. Torrente-Murciano
  Topics in Catalysis, 59. (15-16), pp. 1438–1457. DOI: 10.1007/s11244-016-0653-4
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2015 Journal Low Temperature H2 Production from Ammonia Using Ruthenium-Based Catalysts: Synergetic Effect of Promoter and Support
 Alfred K. Hill, Laura Torrente-Murciano
  Applied Catalysis B: Environmental, 172-173. pp. 129–135. DOI: 10.1016/j.apcatb.2015.02.011
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2014 PhD Thesis Development of Low Temperature Catalysts for an Integrated Ammonia PEM Fuel Cell
 Alfred Hill
  University of Bath
2014 Journal In-Situ H2 Production via Low Temperature Decomposition of Ammonia: Insights into the Role of Cesium as a Promoter
 Alfred K. Hill, Laura Torrente-Murciano
  International Journal of Hydrogen Energy, 39. (15), pp. 7646–7654. DOI: 10.1016/j.ijhydene.2014.03.043
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Showing 15 entries (filtered from 83 total entries)