Effect of Ash on Oxygen Carriers for the Application of Chemical Looping Combustion to a High Carbon CharA. Rubel, Y. Zhang, K. Liu and J. NeatheryOil Gas Sci. Technol. – Rev. IFP Energies nouvelles, 66 2 (2011) 291-300DOI: https://doi.org/10.2516/ogst/2010024