Degree: BS, School of Engineering and Applied Science - Engineering Management, 2005, Miami University Honors Theses
► This study investigates the feasibility of using a V2O5/TiO2 catalyst in combination…
▼ This study investigates the feasibility of using a V2O5/TiO2 catalyst in combination with ozone to oxidize methanol, a representative volatile organic compound (VOC) emission from the pulp and paper industry. The V2O5/TiO2 catalyst was prepared using a sol-gel synthesis method. Characterization through XRD, BET surface area, and SEM/EDX analysis was carried out on the catalyst. The catalyst performance was tested in a lab-scale catalytic oxidation system with and without ozone to optimize the reaction parameters of residence time, ozone / methanol ratio, and reaction temperature. The destruction of methanol and the formation of major byproduct, Methyl Formate (MF), was analyzed. In addition, six other previously characterized V2O5/TiO2 catalysts of various vanadia loadings synthesized by the wet incipient method were tested generally for comparison both in the presence of ozone and without ozone. This investigation shows that vanadia / titania catalysts used in combination with ozone are promising in the low temperature oxidation of methanol. The combination was found to successfully oxidize over 98 percent of initial methanol at a temperature of 150°C. Variation in the ozone / methanol ratio, residence time, and temperature in the preferred range of 100 to 150°C demonstrated that the selectivity to MF and CO2 can be significantly impacted by process variables. Comparison of the varied vanadia loadings in the catalysts resulted in a V/Ti ratio = 0.05 as the most active without ozone, but V/Ti = 0.01-0.05 act approximately the same in the presence of ozone.
Advisors/Committee Members: Almquist, Cathy B.