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| Content Provider | Springer Nature Link |
|---|---|
| Author | Gabrovska, M. Idakiev, V. Tenchev, K. Nikolova, D. Edreva Kardjieva, R. Crisan, D. |
| Copyright Year | 2013 |
| Abstract | Ni-Al layered double hydroxides with Ni$^{2+}$/Al$^{3+}$ molar ratios of 1.5 and 3.0 have been synthesized by co-precipitation and studied as catalyst precursors for purification of CO-containing gas-mixtures by means of CO oxidation to CO$_{2}$ and conversion of CO by water vapor (water-gas shift reaction). The influence of the alkali additives (K$^{+}$ ions) on the water-gas shift activity has been also examined. It was established that the catalytic activity of both reactions increases with the temperature and the nickel content. Hypothetic schemes are proposed about activation of the catalysts in the WGSR and CO oxidation including redox Ni$^{2+}$ ↔ Ni$^{3+}$ transition on the catalyst surface. The activity in WGSR is positively affected by the presence of potassium promoter, depending on its amount. The sample with higher nickel loading is the most effective catalyst as for CO oxidation as well as for WGSR at intermediate temperatures after potassium promotion. |
| Starting Page | 2152 |
| Ending Page | 2159 |
| Page Count | 8 |
| File Format | |
| ISSN | 00360244 |
| Journal | Russian Journal of Physical Chemistry |
| Volume Number | 87 |
| Issue Number | 13 |
| e-ISSN | 1531863X |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2013-11-07 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Ni-Al layered double hydroxides Ni-Al mixed metal oxides CO oxidation water-gas shift reaction potassium additive Physical Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry |
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