Characterization of TiO_2-cordierite carrier prepared by APCVD and sol-gel method

摘要

TiO_2 has been loaded on cordierite porous ceramic to prepare the SCR catalyst carrier by using both APCVD and sol-gel method. The physical properties, SEM and SEM-EDX of the TiO_2-cordierite carrier have been analyzed. The results showed that TiO_2 loaded by APCVD method were of graininess shape and accumulated evenly. The loading rate of TiO_2 and the specific area of carrier sample were increased 114% and 21% respectively when using APCVD method. In the results of sol-gel method, the maximal difference of Ti content was 66.92%, while the result of APCVD method was 18.89%. It demonstrated that TiO_2 was uniformly attached with the cordierite ceramic by using APCVD method. That would ensure the active ingredients well loaded on the TiO_2-cordierite carrier in the next process.