Highly Selective CO2 Hydrogenation to Methanol over Complex In/Co Catalysts: Effect of Polymer Frame
Svetlana A Sorokina1, Nina V Kuchkina1, Stepan P Mikhailov2
1A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., 119991 Moscow, Russia.
Nanomaterials (Basel, Switzerland)
|December 8, 2023
Summary
Researchers developed a novel indium-based catalyst for carbon dioxide (CO2) hydrogenation to methanol. Adding a branched pyridylphenylene polymer (PPP) promoter significantly improved methanol selectivity to 98.5% and catalyst stability.
Area of Science:
- Catalysis
- Materials Science
- Renewable Energy
Background:
- Intensive research into carbon dioxide (CO2) hydrogenation to methanol is driven by the demand for sustainable liquid fuels.
- Indium-based catalysts show potential for CO2 hydrogenation but suffer from poor stability and selectivity.
- Existing commercial copper-based catalysts have limitations in methanol production rates.
Purpose of the Study:
- To enhance the selectivity and stability of indium-based catalysts for CO2 hydrogenation.
- To investigate the role of a branched pyridylphenylene polymer (PPP) as a structural promoter.
- To develop magnetically recoverable bimetallic catalysts for efficient methanol synthesis.
Main Methods:
- Synthesis of bimetallic indium-based catalysts supported on a solid material.
- Incorporation of a branched pyridylphenylene polymer (PPP) as a structural promoter.
- Evaluation of catalyst performance in CO2 hydrogenation, including selectivity, activity, and stability.
- Characterization of catalyst structure-activity relationships.
Main Results:
- Methanol selectivity reached 98.5% with the addition of PPP, a significant improvement over catalysts without PPP (70.2% selectivity).
- The methanol production rate was twelve times higher compared to a commercial copper-based catalyst.
- The PPP promoter enhanced catalyst stability by improving CO2 sorption and protecting indium from sintering and over-reduction.
Conclusions:
- Branched pyridylphenylene polymer (PPP) effectively promotes selectivity and stability in indium-based CO2 hydrogenation catalysts.
- The developed catalyst offers a promising alternative for efficient and selective methanol production.
- Synergistic interactions between catalyst components (support, magnetic material, indium, and PPP) are crucial for optimal performance.
Keywords:
CO2 hydrogenationbasic sitescobaltindium oxidemethanoloxygen vacanciespolymersupported catalystsMore Related Videos
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