ABSTRACT
Carbon monoxide (CO) hydrogenation is a commercially promising reaction for the synthesis of higher hydrocarbons and liquid fuels from coal. Due to operating constraints such as low available H2/CO ratio, it is often desirable to have the catalyst produce CO2 rather than H2O during CO hydrogenation. In practice, this can be achieved by having a catalyst that is also active for the water gas shift (WGS) reaction. Authors found that the oxide support can exert a marked influence on the relative selectivity to H2O and CO2. While Pt is considered a poor catalyst for CO hydrogenation, when supported on TiO2, authors saw a dramatic increase in activity compared to Pt/SiO2. They showed that this increase in CO hydrogenation activity is also seen when Pt is supported on CeO2. Furthermore, the CeO2 supported Pt catalyst showed a different selectivity during CO hydrogenation compared to Pt/Al203.
