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| Content Provider | Springer Nature Link |
|---|---|
| Author | Kwak, Jung Hun Han, Gui Young Bae, Jong Wook Yoon, Ki June |
| Copyright Year | 2014 |
| Abstract | For cyclic production of syngas and H$_{2}$ by redox (methane reforming-water splitting) operations, samples of tungsten oxides supported on nano-size zirconia (WO$_{3}$/n-ZrO$_{2}$) were investigated at 1,223 and 1,273 K and compared with those on micron-size zirconia (WO$_{3}$/µ-ZrO$_{2}$). The reduction characteristics of WO$_{3}$/n-ZrO$_{2}$ observed in this study were consistent with those of WO$_{3}$/µ-ZrO$_{2}$ reported in the literature. Specifically, the reduction process comprised three stages, the syngas production rate decreased as WO$_{3}$ content increased, and the overall degree of reduction gradually decreased with repeated cycles. However, there were differences due to the smaller particle size, namely, WO$_{3}$/n-ZrO$_{2}$ yielded a higher syngas production rate and a lower H$_{2}$/(CO+CO$_{2}$) ratio. In addition, the hydrogen yield by water splitting was significantly lower than the amount expected based on the overall degree of WO$_{3}$ reduction. The H$_{2}$/(CO+CO$_{2}$) ratio also gradually decreased with repeated cycles. These results were mainly attributed to rapid sintering of WO$_{3}$/n-ZrO$_{2}$, which gradually began to resemble WO$_{3}$/µ-ZrO$_{2}$. |
| Starting Page | 961 |
| Ending Page | 971 |
| Page Count | 11 |
| File Format | |
| ISSN | 02561115 |
| Journal | Korean Journal of Chemical Engineering |
| Volume Number | 31 |
| Issue Number | 6 |
| e-ISSN | 19757220 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2014-03-03 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Hydrogen Nano-size Zirconia Methane Reforming Syngas Tungsten Oxide Industrial Chemistry/Chemical Engineering Catalysis Materials Science Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
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