Abstract
Flame-made nano-structured and commercial micro-structured ceria powders are assessed for two-step carbon dioxide splitting (CDS) driven by a reduction step of methane partial oxidation (MPO). The MPO and CDS reaction rates are strongly dependent on the structural properties of the ceria powders. The nano-structured material shows up to 167% and 144% higher H2 and CO average production rates during MPO, respectively, and 97% higher CO average production rate during CDS than the micro-structured commercial ceria. After 10 consecutive cycles, the rates are still 57%, 54% and 15% higher, respectively. The higher reaction rates for the nano-structured ceria are attributed to the initially 10 times higher specific surface area of the flame-made nano-structured ceria (76.6 m2 g-1) than that of commercial micro-structured powders (7.3 m2g-1). These findings indicate that thermal and chemical stabilization of nano-scale structural features is the key to achieving long-term cyclability of ceria in high temperature solar thermochemical fuel production
| Original language | English |
|---|---|
| Title of host publication | 2015 Asia-Pacific Solar Research Conference |
| Editors | R. Egan, R. Passey |
| Place of Publication | Canberra |
| Publisher | Australian Photovoltaic Institute |
| Edition | peer reviewed |
| ISBN (Print) | 9780646950167 |
| Publication status | Published - 2015 |
| Event | 2015 Asia-Pacific Solar Research Conference - Bridsbane Duration: 1 Jan 2015 → … https://www.researchgate.net/publication/286780010_Prospecting_solar_energy_in_Australia_accounting_for_temperature_losses |
Conference
| Conference | 2015 Asia-Pacific Solar Research Conference |
|---|---|
| Period | 1/01/15 → … |
| Other | December 8-10 2015 |
| Internet address |