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Methanol synthesis over C u / S i O 2 catalysts
| Content Provider | Semantic Scholar |
|---|---|
| Author | Robbins, John Lawrence |
| Copyright Year | 2004 |
| Abstract | The rates of CO and CO/CO 2 hydrogenation at 4.2 MPa and 523 K are reported for a series of Cu/SiO 2 catalysts containing 2 to 88 wt.% Cu. These catalysts were prepared on a variety of silica sources using several different Cu deposition techniques. In CO/CO 2 hydrogenation, the rate of methanol formation is proportional to the exposed Cu surface area of the reduced catalyst precursor, as determined by N20 frontal chromatography. The observed rate, 4.2x 10 .3 mole CI-I3OH/Cu site-see, is within a factor of three of the rates reported by others over Cu/ZnO and Cu/ZnO/A120 3 catalysts under comparable conditions. These results suggest that the ZnO component is only a moderate promoter in methanol synthesis. Hydrogenation of CO over these catalysts also gives methanol with high selectivity, but the synthesis rate is not proportional to the Cu surface area. This implies that another type of site, either alone or in cooperation with Cu, is involved in the synthesis of methanol from CO. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://rd.springer.com/content/pdf/10.1007/BF00764730.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
