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Kinetic Behavior of Fabricated $CuO/ZrO_{2}$ Oxygen Carriers for Chemical Looping Oxygen Uncoupling
| Content Provider | MDPI |
|---|---|
| Author | Ku, Young Chang, Chia-Wei Shiu, Shr-Han Wu, Hsuan-Chih Moed, Niels Michiel |
| Copyright Year | 2021 |
| Description | Chemical looping with oxygen uncoupling (CLOU) is an innovative alternative to conventional combustion. $CuO/ZrO_{2}$ oxygen carriers were tested in this system for their effectiveness and resilience. Cupric oxide (CuO) was demonstrated to be a reliable oxygen carrier for oxygen-uncoupling with consistent recyclability even after 50 redox cycles in a thermogravimetric analyzer (TGA). The reduction of CuO to generate $Cu_{2}$O and oxygen was observed to be improved markedly for experiments operated at higher temperatures; however, the oxidation of $Cu_{2}$O by air to generate CuO was hindered for experiments carried out at elevated temperatures. The reduction rate of fabricated $CuO/ZrO_{2}$ particles containing 40% CuO was enhanced with increasing temperature and decreased with increasing particle size for experiments operated in a fixed bed reactor. The geometrical contraction and Avrami-Erofe’ev models were demonstrated to be appropriate for describing the reduction and oxidation of $CuO/ZrO_{2}$, respectively. The activation energies for the reduction and oxidation were determined to be 250.6 kJ/mol and 57.6 kJ/mol, respectively, based on experimental results in the temperature range between 850 and 1000 °C. |
| Starting Page | 2156 |
| e-ISSN | 22279717 |
| DOI | 10.3390/pr9122156 |
| Journal | Processes |
| Issue Number | 12 |
| Volume Number | 9 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-11-29 |
| Access Restriction | Open |
| Subject Keyword | Processes Environmental Engineering Chemical Looping Oxygen Uncoupling Copper Oxide Cuo/zro2 |
| Content Type | Text |
| Resource Type | Article |
