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Through the assistance of oxygen carrier particles, the chemical looping processes convert carbonaceous fuels while producing a sequestration ready CO2 stream. Two chemical looping gasification processes, the syngas chemical looping (SCL) process and the coal direct chemical looping (CDCL) process, are developed for hydrogen and electricity co-production from carbonaceous fuels. Both processes involve the reduction of a metal oxide with a fuel followed by regeneration of the reduced metal oxide with steam and air in a cyclic manner. The syngas chemical looping process converts gaseous fuels such as syngas and methane while the coal direct chemical looping process converts solid fuels such as coal and biomass. A novel iron oxide based composite oxygen carrier particle is currently being developed for the aforementioned chemical looping gasification process. The physical and chemical properties of the particles including compressive strength, attrition rate, reactivity and recyclability are tested. Reduction of the particles with syngas in an integral bed reactor is performed followed by oxidizing the reduced particles in the sam