Reactivity study on a novel hydrogen fueled chemical-looping combustion

In this paper the reactivity study on hydrogen fueled chemical-looping combustion, which is capable of making breakthrough in simultaneous contribution to the efficient use of energy and being environmentally benign, has been carried out by a thermogravimetric analyzer (TGA) and a fixed bed reactor. The hydrogen fueled chemical-looping combustion in the new gas turbine cycle consists of two successive reactions: hydrogen fuel is reacted with metal oxide (reduction of metal oxide), instead of air or pure oxygen, and then the reduced metal is successively oxidized by air. Here, we have developed looping materials based on the integration of NiO, as solid reactants, with a composite metal oxide of NiAl2O4, as a binder, leading to a significant role in improving reaction rate, conversion, and regenerability in cyclic reaction in this combustor, compared with the other materials. These promising results indicated that this novel hydrogen fueled chemical-looping combustion is expected to be an effective use of hydrogen energy in power generation. (C) 2001 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.