Influence of calcination temperature on cordierite as catalyst support for V_2O_5/SiO_2 system

V2O5-WO3/SiO2 system supported on modified carrier with silica sol and microwave heating method was prepared,and the influence of calcination temperature on the specific surface area,structure of modified cordierite and the catalytic performance of catalyst were studied with BET,TG-DTA and XRD analysis.The results showed that the surface structure of modified cordierite was unchanged with the increased calcination temperature,and the specific surface area of modified cordierite reached 72.74 m2/g when calcinated at 400 ℃.The highest reduction ratio of NO was obtained when V2O5-WO3/SiO2 system supported on the modified cordierite calcinated at 400 ℃ was used at the optimal reaction temperature of 350 ℃.