| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 50579 | Catalysis Communications | 2012 | 5 Pages |
SiO2, TiO2 and SiO2–TiO2 mixed oxide were synthesized by sol–gel method and used as supports for Rh-based catalysts. The effect of support on the performance of Rh-based catalysts for C2-oxygenates synthesis from syngas was investigated by XRD, N2 adsorption-desorption, FT-IR, H2-TPD, H2-TPR and TPSR techniques. The results indicated that SiO2–TiO2 supported catalyst had higher dispersion of Rh and thus more Rh+ sites, better capability for CO adsorption and dissociation, and moderate ability for hydrogenation. As a result, SiO2–TiO2 supported Rh-based catalyst exhibited higher activity and C2 oxygenates selectivity compared with counterparts supported on TiO2 and SiO2.
Graphical abstractAmong Rh-based catalysts supported SiO2, TiO2 and SiO2–TiO2 mixed oxide, SiO2–TiO2 supported catalyst exhibits best catalytic activity toward C2 oxygenates.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► SiO2–TiO2 supported catalyst is more effective for the formation of C2 oxygenates. ► SiO2–TiO2 supported catalyst has higher dispersion of Rh which leads to more Rh+ sites. ► SiO2–TiO2 supported catalyst has excellent capability for CO dissociation. ► SiO2–TiO2 supported catalyst has moderate ability for hydrogenation.
