Research Article
Characteristics of Polyaniline Cobalt Supported Catalysts for Epoxidation Reactions
Table 2
Comparing results obtained from AAS analysis and semiquantitative chemical analysis obtained from X-ray photoelectron spectroscopy.
| | Sample | XPS (surface) | AAS (bulk) Co/N | | | C | N | Co | Cl | O |
| | 154 | 8.68 | 1 | | — | 0.73 | 0.0000 | — | | 159A | 13.32 | 1 | | — | 1.51 | 0.0039 | — | | 167A | 7.01 | 1 | 0.017 | 0.24 | 0.45 | 0.0175 | 0.98 | | 167B | 8.35 | 1 | 0.031 | 0.25 | 0.86 | 0.0162 | 1.89 | | 168A | 9.93 | 1 | 0.222 | 1.02 | 1.18 | 0.0889 | 2.50 | | 168B | 9.74 | 1 | 0.269 | 1.48 | 0.92 | 0.1065 | 2.52 | | 169A | 8.54 | 1 | 0.027 | — | 0.87 | 0.0105 | 2.46 | | 169B | 9.28 | 1 | | — | 0.97 | 0.0153 | — | | 170A | 10.09 | 1 | | — | 1.03 | 0.0146 | — | | 170B | 11.13 | 1 | 0.018 | — | 1.51 | 0.0097 | — |
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The content of the individual atoms both XPS and AAS measurements were normalized to nitrogen.
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