Research Article
A Method for Determination of Metals in Hybrid Metal Oxide/Metal-Carbon Nanotubes Catalysts
Table 4
Leaching of Ce, Zr, and Ni from hybrid Ni/CNT and CeZrO2/CNT materials (leaching medium—5% and 67% HNO3).
| | Me | 5% HNO3 | 67% HNO3 | Me in 1 g of examined material (slurry nebulization ICP-AES) [mg] | | Me leached from 1 g of examined material [mg] | Recovery [%] | Me leached from 1 g of examined material [mg] | Recovery [%] |
| | CeZrO2/CNT | | Ce | 23.88 | 12.91 | 7.91 | 4.28 | 184.92 | | Zr | 2.02 | 4.25 | 1.16 | 2.44 | 47.56 | | Ni/CNT | | Ni | 31.10 | 95.08 | 25.27 | 77.25 | 32.71 |
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