Promoter Effect of Transition Metal Doped Catalyst for Photocatalysis and Deep Hydrodesulfurization Reaction

• Main Authors: Chen, Ting-Mu, 陳亭穆
• Other Authors: Wang, IKai
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/86095372511730035397

博士 === 國立清華大學 === 化學工程學系 === 98 === In this research, the promoter effect of transition metal doped catalyst for photocatalysis and deep hydrodesulfurization reaction had been discussed. The titania and zirconia mixed oxides photocatalysts were prepared by the sol-gel and co-precipitation methods with different calcination temperature and added amounts of Zr, and the vanadia containing alumina (Vx-Al2O3) was prepared by the co-precipitation method and used as a catalyst support for Co and Mo oxide (Co-Mo/Vx-Al2O3) in the hydrodesulfurization (HDS) reaction. Detailed catalyst characterization and catalyst testing showed that the doped transition metal oxides could improve the catalyst activities. The thermal stability and photodegradation ability of acetaldehyde were enhanced by incorporated Zr into the TiO2 structure. The experiment results showed that the s-TiZr-10-500 catalyst presented the best photocatalytic ability. The promoter effect of vanadia is due to the synergetic effect of the formation of V-Mo sulfide. A binary powder mixture with intimate contact of Co-Mo/γ-Al2O3 and Co-Mo/Vx-Al2O3 could facilitate a concerted reaction involving both hydrogenation and direct desulfurization pathways.