Surface Spectroscopic Study of Renewable Ethylene Glycol Synthesis over Silicon Dioxide-Supported Metal Catalysts
AIChE Annual Meeting
Monday, November 14, 2016 - 10:00am to 12:30pm
This experiment tested the selectivity and stability of SiO2-supported copper during the reduction of DMO into ethylene glycol. Catalysts were prepared in 15-20 percent weight copper, using incipient wetness impregnation, as well as urea-assisted gelation. Fourier transform infrared spectroscopy was then performed as DMO dissolved in ethanol flowed over the catalyst. These spectra allowed some of the functional groups forming on the surface of the metal catalyst to be identified, based on shapes of peaks at certain wavenumbers. Determining the identities and concentrations of byproducts will give insight into the selectivity of the Cu/SiO2 catalyst. Taking many spectra over extended periods of time will show how stable the catalyst is under reductive conditions.