1. Date of download: 7/6/2016 Copyright © ASME. All rights reserved. From: Solar Carbothermic Reduction of ZnO in a Two-Cavity Reactor: Laboratory Experiments for a Reactor Scale-Up J. Sol. Energy Eng. 2005;128(1):8-15. doi:10.1115/1.2147585 Sketch of the laboratory solar reactor Figure Legend:

2. Date of download: 7/6/2016 Copyright © ASME. All rights reserved. From: Solar Carbothermic Reduction of ZnO in a Two-Cavity Reactor: Laboratory Experiments for a Reactor Scale-Up J. Sol. Energy Eng. 2005;128(1):8-15. doi:10.1115/1.2147585 Experimental setup in the solar furnace of PSI Figure Legend:

3. Date of download: 7/6/2016 Copyright © ASME. All rights reserved. From: Solar Carbothermic Reduction of ZnO in a Two-Cavity Reactor: Laboratory Experiments for a Reactor Scale-Up J. Sol. Energy Eng. 2005;128(1):8-15. doi:10.1115/1.2147585 Results of TG experiments for screening of carbon materials (molar ratio Cfix: ZnO=0.8:1) Figure Legend:

4. Date of download: 7/6/2016 Copyright © ASME. All rights reserved. From: Solar Carbothermic Reduction of ZnO in a Two-Cavity Reactor: Laboratory Experiments for a Reactor Scale-Up J. Sol. Energy Eng. 2005;128(1):8-15. doi:10.1115/1.2147585 Micrographs of a beech charcoal ash sample (dark) during heating. Until the softening temperature of 1210°C is reached there is no change of shape. Between 1210°C and the fusion temperature of 1415°C strong deformation of the sample takes place. At 1415°C the ash is molten completely. Figure Legend:

5. Date of download: 7/6/2016 Copyright © ASME. All rights reserved. From: Solar Carbothermic Reduction of ZnO in a Two-Cavity Reactor: Laboratory Experiments for a Reactor Scale-Up J. Sol. Energy Eng. 2005;128(1):8-15. doi:10.1115/1.2147585 Solar power input, product gas flow rates and reactor temperatures during a representative batch run of the reactor (500g mixture of beach charcoal powder and ZnO with molar ratio Cfix: ZnO=0.9:1) Figure Legend:

6. Date of download: 7/6/2016 Copyright © ASME. All rights reserved. From: Solar Carbothermic Reduction of ZnO in a Two-Cavity Reactor: Laboratory Experiments for a Reactor Scale-Up J. Sol. Energy Eng. 2005;128(1):8-15. doi:10.1115/1.2147585 Overall reaction rate as a function of temperature for different carrier gas flows (Cfix: ZnO=0.9:1) Figure Legend:

7. Date of download: 7/6/2016 Copyright © ASME. All rights reserved. From: Solar Carbothermic Reduction of ZnO in a Two-Cavity Reactor: Laboratory Experiments for a Reactor Scale-Up J. Sol. Energy Eng. 2005;128(1):8-15. doi:10.1115/1.2147585 Mass change of separation wall materials used in solar reactor tests Figure Legend: