Photochemical Formic Acid Dehydrogenation by Tethered and Untethered Iridium Complexes
Presentation Type
Poster
Presentation Type
Submission
Keywords
Chemistry, inorganic chemistry, catalysis
Department
Chemistry
Major
Chemistry
Abstract
Pentamethylcyclopentadienyl iridium bipyridine complexes have been demonstrated to act as efficient photocatalysts in the dehydrogenation of formic acid for the production of H2 and CO2 . We have explored the influence of halide ligand on the homogenous photochemical formic acid dehydrogenation catalyzed by expanding the catalyst scope to include [Cp*Ir(bpy)Br][Br], [Cp*Ir(bpy)I][I], and [Cp*Ir(bpy-CO2H)Cl][Cl] as well as the original catalyst, [Cp*Ir(bpy)Cl][Cl]. A heterogenous catalysis system was also explored by tethering [Cp*Ir(bpy-CO2H)Cl][Cl] to a silica-based support resin. The tethered system was characterized using attenuated total reflectance (ATR) IR and UV-Vis spectroscopy. This system has advantages over homogenous catalysis in the ease of separation from the reaction mixture and potential for catalyst recyclability.
Faculty Mentor
David Green and Kelsey Brereton
Funding Source or Research Program
Summer Undergraduate Research Program, Undergraduate Research Fellowship
Location
Waves Cafeteria
Start Date
24-3-2023 2:00 PM
End Date
24-2-2023 4:00 PM
Photochemical Formic Acid Dehydrogenation by Tethered and Untethered Iridium Complexes
Waves Cafeteria
Pentamethylcyclopentadienyl iridium bipyridine complexes have been demonstrated to act as efficient photocatalysts in the dehydrogenation of formic acid for the production of H2 and CO2 . We have explored the influence of halide ligand on the homogenous photochemical formic acid dehydrogenation catalyzed by expanding the catalyst scope to include [Cp*Ir(bpy)Br][Br], [Cp*Ir(bpy)I][I], and [Cp*Ir(bpy-CO2H)Cl][Cl] as well as the original catalyst, [Cp*Ir(bpy)Cl][Cl]. A heterogenous catalysis system was also explored by tethering [Cp*Ir(bpy-CO2H)Cl][Cl] to a silica-based support resin. The tethered system was characterized using attenuated total reflectance (ATR) IR and UV-Vis spectroscopy. This system has advantages over homogenous catalysis in the ease of separation from the reaction mixture and potential for catalyst recyclability.