Selective methanol synthesis from CO2/H2 on new SiO2-supported PtW and PtCr bimetallic catalysts Original Research Article

New SiO2-supported PtW and PtCr bimetallic catalysts prepared by using bimetal carbonyl hydride complexes as precursors exhibited remarkably higher activity and methanol selectivity (typically above 90%) in carbon dioxide hydrogenation than conventionally prepared monometallic or bimetallic catalysts. At 473 K and 30 bar, the carbon dioxide conversion was 2.6% while methanol selectivity reached 92.2% for the complex-derived PtW/SiO2 catalyst even if the reactant gas ratio was CO2/H2=13.