Journal
CHEMICAL ENGINEERING JOURNAL
Volume 326, Issue -, Pages 470-476Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2017.05.176
Keywords
Layered double hydroxides; Chemical looping; Carbon capture
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Funding
- National Research Foundation (NRF), Prime Minister's Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) programme
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Chemical looping combustion offers a solution to achieve carbon capture with minimal energy penalty and significantly reduced NOx formation. The design and synthesis of oxygen carriers play an important role in the advancement of chemical looping combustion. In this investigation, Mg-Ni-Al-O oxygen carriers were synthesised using layered double hydroxides (LDH) as precursors, which facilitate molecular level dispersion of cations in the resulting oxide composites. The behaviour of the synthesised oxygen carriers over 100 chemical looping cycles was studied. The results confirmed the presence of two solid solutions systems: MgO-NiO and MgAl2O4-NiAl2O4, the compositions of which changed over cycles and determined the performance of the oxygen carriers. (C) 2017 Elsevier B.V. All rights reserved.
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