Ammonia decomposition catalysis using non-stoichiometric lithium imide† †Electronic supplementary information (ESI) available: Data analysis procedures, data fitting procedures, X-ray diffraction pattern of Li2ND, details of reduction of LiND2 unit cell, POLARIS blank cell results, NPD patterns, exponential fits to QGA data and long-duration reaction data. See DOI: 10.1039/c5sc00205b
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چکیده
We demonstrate that non-stoichiometric lithium imide is a highly active catalyst for the production of highpurity hydrogen from ammonia, with superior ammonia decomposition activity to a number of other catalyst materials. Neutron powder diffraction measurements reveal that the catalyst deviates from pure imide stoichiometry under ammonia flow, with active catalytic behaviour observed across a range of stoichiometry values near the imide. These measurements also show that hydrogen from the ammonia is exchanged with, and incorporated into, the bulk catalyst material, in a significant departure from existing ammonia decomposition catalysts. The efficacy of the lithium imide–amide system not only represents a more promising catalyst system, but also broadens the range of candidates for amide-based ammonia decomposition to include those that form imides.
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Ammonia decomposition catalysis using non-stoichiometric lithium imide.
We demonstrate that non-stoichiometric lithium imide is a highly active catalyst for the production of high-purity hydrogen from ammonia, with superior ammonia decomposition activity to a number of other catalyst materials. Neutron powder diffraction measurements reveal that the catalyst deviates from pure imide stoichiometry under ammonia flow, with active catalytic behaviour observed across a...
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Department of Chemistry, University of She E-mail: [email protected] Department of Chemistry, University of Y E-mail: [email protected] Department of Chemistry, University of Ca 1EW, UK. E-mail: [email protected] † Electronic supplementary information experimental procedures and analysis of data and single-crystal X-ray diffraction compounds 2b$3 and 2c$3 contain the s this paper....
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EaStCHEM School of Chemistry, The Unive David Brewster Road, Edinburgh, EH9 3FJ, [email protected] LPCNO, INSA, Université de Toulouse, 13 cedex 4, France Centre for Radiochemisty Research, Sch Manchester, Oxford Road, Manchester, M13 WestCHEM School of Chemistry, University † Electronic supplementary information synthetic details, NMR spectra, EPR spe and emission spectra, voltammetric computati...
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