Thomas Simonyi

TL;DR: In this paper, the combustion and reoxidation properties of direct coal chemical-looping combustion (CLC) over CuO, Fe2O3, Co3O4, NiO, and Mn 2O3 were investigated using thermogravimetric analysis (TGA) and bench-scale fixed-bed flow reactor studies.

TL;DR: In this article, mixed metal oxide carriers containing iron and copper oxides were evaluated for coal and methane CLC, and the components of CuO and Fe2O3 were optimized to obtain good reactivity while maintaining physical and chemical stability during cyclic reactions for methane-CLC and solid fuel CLC.

TL;DR: In this article, the authors show that carbon induces the Cu-O bond breaking process to initiate the combustion of carbon at temperatures significantly lower than the spontaneous decomposition temperature of CuO, and the type of reducing medium in the vicinity of the metal oxide influences the temperature at which the oxygen release from the metal oxides takes place.

TL;DR: In this article, the effect of particle size of the oxygen carrier on chemical-looping combustion with an oxygen carrier, NiO/bentonite (60 wt % NiO), was studied for the gasification systems utilizing simulated synthesis gas.

TL;DR: In this article, the performance of nanostructured CuO/bentonite and CuO-BHA nanocomposites was studied as oxygen carriers in chemical-looping combustion (CLC) of simulated synthesis gas.