ProductUpdated on 17 March 2025
Methanol Production from Carbon Dioxide (CO2)
AVP - Innovation, Knowledge Mobilization & Partnerships at University of Alberta
Edmonton, Canada
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Technology Overview
The conventional industrial process for the production of methanol employs syngas (CO + H2) hydrogenation catalyzed by Cu/ZnO/Al2O3. However, when the same catalytic system is employed with CO2, water forms as a byproduct reduces the activity, stability, and selectivity of the process.
University of Alberta researchers developed a polyhedral oligomeric silsesquioxane (POSS) based catalysis for direct CO2 hydrogenation to methanol. Mild calcination of copper−zinc-impregnated POSS material affords the formation of catalyst-POSS nanoparticles able to reach a 3.8% yield of methanol with selectivity as high as 87.5% in a batch reactor. The catalytic system metal-POSS is stable and recyclable under H2 reduction and CO2/H2 conditions. The increased number of aromatics in the structure of POSS results in an increased hydrophobic character that plays a decisive role in the methanol formation. For comparison, catalysts supported on reduced graphene oxide (RGO) showed 0% selectivity to methanol under the study conditions. Anticipated further advancements include a substantial increase in methanol yield when transitioning to a continuous flow reactor setup.
The developed composite materials have high thermal stability in both inert and oxidative atmospheres. The supports show promise for applications in catalytic systems that require hydrophobic and thermally stable supports.
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