![]() ![]() The influence of oxygen carrier composition was investigated by generating carriers containing different ratios of the perovskite phases SrFeO3 and Sr3Fe2O7. For CL-epoxidation, Ag catalyst was supported on SrFeO3 as an oxygen carrier. donation of oxygen to the catalyst occurs at the optimum temperature for the catalyst. ![]() In the reactions of interest, a catalyst was supported on the oxygen carrier: a critical requirement is to synthesise carriers such that inter al. By eliminating the cofeeding of gaseous oxygen and flammable reactants, the CL approach can render reactions safer, and, potentially, more selective and intensive. The oxygen carrier is then regenerated by exposure to air to be ready for reuse in the principal reaction. CL approach depends on the redox cycling of a solid oxygen carrier, typically a metal oxide, which donates oxygen at typical reaction conditions, eliminating the need of a gaseous feed of molecular oxygen. Chemical looping (CL) offers a novel route to improve energy efficiency and environmental performance, hence investigated in this Dissertation for two selective oxidation reactions: (i) the epoxidation of ethylene to ethylene oxide, and (ii) the oxidative dehydrogenation (ODH) of ethane to ethylene. The production of chemicals is a key contributor to industrial energy demand and greenhouse gas emissions. ![]()
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