Towards anti-perovskite nitrides as potential nitrogen storage materials for chemical looping ammonia production: reduction of Co₃ZnN, Ni₃ZnN, Co₃InN, Ni₃InN under hydrogen

Goto, Y., Daisley, A. and Hargreaves, J.S.J. (2021) Towards anti-perovskite nitrides as potential nitrogen storage materials for chemical looping ammonia production: reduction of Co₃ZnN, Ni₃ZnN, Co₃InN, Ni₃InN under hydrogen. Catalysis Today, 364, pp. 196-201. (doi: 10.1016/j.cattod.2020.03.022)

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Abstract

The ammonia production properties upon reduction in hydrogen of the anti-perovskite nitrides Co₃ZnN, Ni₃ZnN, Co₃InN, and Ni₃InN have been investigated. Single phases with ideal anti-perovskite structures (Space group: Pm-3m) were prepared for all the nitrides by the ammonolysis of the corresponding precursor oxides and all the nitrides were observed to produce ammonia in high yields when reacted with H2/Ar. The cumulative ammonia production values at 400 °C were 3069, 2925, 289, and 1029 μmol-NH3 g⁻¹ for Co₃ZnN, Ni₃ZnN, Co₃InN, and Ni₃InN, respectively and the order of the release rates was Ni₃ZnN > Co₃ZnN > Ni₃InN > Co₃InN. X-ray diffraction studies revealed that Co₃ZnN and Co₃InN were decomposed upon the loss of lattice N, whereas Ni₃ZnN and Ni₃InN were transformed into Ni₃Zn and Ni₃In via the intermediate phases Ni₃ZnNₓ and Ni₃InNᵧ. The crystal structures of these intermediate phases are related to their initial structures, indicating that the loss of lattice N in Ni₃ZnN and Ni3InN was topotactic.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Daisley, Miss Angela and Hargreaves, Professor Justin
Authors: Goto, Y., Daisley, A., and Hargreaves, J.S.J.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Catalysis Today
Publisher:Elsevier
ISSN:0920-5861
ISSN (Online):1873-4308
Published Online:16 March 2020
Copyright Holders:Copyright © 2020 The Authors
First Published:First published in Catalysis Today 364: 196-201
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
172865EPSRC DTP 16/17 and 17/18Tania GalabovaEngineering and Physical Sciences Research Council (EPSRC)EP/N509668/1Research and Innovation Services