Hydrogenation of carbon dioxide to form various hydrocarbon chains has been intensively studied. In our previous study on the formation of aromatic hydrocarbons via Fe/Fe3O4-nanoparticle-catalyzed CO2 hydrogenation, we found that the individual nanoparticles (10 nm) gradually fused to bigger (100-200 nm) particles over time. In 20 consecutive runs, we didn't observe a dramatic loss of the catalytic activity. However, this process will eventually lead to deactivation of catalyst due to loss of surface area and active site for catalysis, which is of a special importance during upscaling and, eventually, industrial production. It is well known that deposition of iron catalysts on inert solid support enhances the dispersion of the active phase, and at the same time retards the mechanical degradation of the catalyst, especially when the solid support is weakly interactive toward iron. Here we chose a-alumina (a-Al2O3) and zeolite Y as solid supports. We succeeded in synthesizing Fe/Fe3O4 nanoparticles in-situ on the solid supports. Our �one pot� approach has many advantages, compared to synthesizing the catalyst first, followed by deposition. We wish to report the detailed TEM characterization of the obtained materials and their catalytic activity toward hydrogenation of CO2.

Supported iron catalysts for CO<sub>2</sub> hydrogenation

247th National Meeting (2014)

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Supported iron catalysts for CO2 hydrogenation

Supported iron catalysts for CO₂ hydrogenation