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GaPt Supported Catalytically Active Liquid Metal Solution Catalysis for Propane Dehydrogenation-Support Influence and
Narayanan Raman1, Moritz Wolf1,2, Martina Heller3
1Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik (CRT), Egerlandstr. 3, 91058 Erlangen, Germany.
Supported catalytically active liquid metal solutions (SCALMS) of platinum in gallium showed high activity and stability for propane dehydrogenation. Silica-supported catalysts demonstrated excellent selectivity and low coking, outperforming other supports.
Area of Science:
- Catalysis
- Materials Science
- Chemical Engineering
Background:
- Supported catalytically active liquid metal solutions (SCALMS) offer unique catalytic properties.
- Platinum-gallium (Pt-Ga) liquid metal solutions are promising for dehydrogenation reactions.
Purpose of the Study:
- To synthesize and evaluate Pt-Ga SCALMS catalysts on various supports for propane dehydrogenation.
- To investigate the influence of support materials (SiO2, Al2O3, SiC) on catalyst performance and stability.
Main Methods:
- Facile synthesis of GaPt-SCALMS using ultrasonication.
- Propane dehydrogenation reaction studies at 500-600 °C.
- Catalyst characterization using SEM-EDX, TPO, and Raman spectroscopy.
Main Results:
- SiC-based SCALMS exhibited the highest activity.
- SiO2-based SCALMS demonstrated superior stability and low cracking at high temperatures (93% propene selectivity at 600 °C).
- Al2O3-supported catalysts suffered from significant coking, unlike SiC and SiO2 supports.
Conclusions:
- Support material significantly impacts the performance and deactivation of Pt-Ga SCALMS catalysts.
- SiO2 is a highly stable support for Pt-Ga SCALMS in propane dehydrogenation, minimizing coking and cracking.
- SCALMS catalysts show potential for efficient and selective propane dehydrogenation.
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