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Electroassisted Propane Dehydrogenation at Low Temperatures: Far beyond the Equilibrium Limitation

[Image: see text] Propylene production by propane dehydrogenation (PDH) generally requires high temperatures due to thermodynamic equilibrium limitations. This study developed a novel type of catalytic system for low-temperature PDH by combining a surface protonics methodology with intermetallic act...

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Detalles Bibliográficos
Autores principales: Zhang, Jianshuo, Ma, Ruoyun, Ham, Hyungwon, Shimizu, Ken-ichi, Furukawa, Shinya
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8549045/
https://www.ncbi.nlm.nih.gov/pubmed/34723271
http://dx.doi.org/10.1021/jacsau.1c00287
Descripción
Sumario:[Image: see text] Propylene production by propane dehydrogenation (PDH) generally requires high temperatures due to thermodynamic equilibrium limitations. This study developed a novel type of catalytic system for low-temperature PDH by combining a surface protonics methodology with intermetallic active sites. By application of an electric current, the intermetallic Pt–In/TiO(2) catalyst gave a propylene yield of 10.2% with high selectivity, even at 250 °C, where the thermodynamic equilibrium yield was only 0.15%. Electroassisted proton collisions with propane allowed an unusual reaction pathway for low-temperature PDH. Alloying of Pt with In drastically enhanced the activity and selectivity due to the increased electron density of Pt.