摘要
Supported loaded semiconductors （MoO3,ZnO）-TiO2/SiO2 were pre pared by an isovolumetric impregnation method from TiO2/SiO2 pre pared by chemical modification reaction. The chemisorption property and photon a bsorption ability of MoO3-TiO2/SiO2 and ZnO-TiO2/SiO 2 were investigated by BET, UV-Vis DRS, IR and TPD-MS techniques. The gas -phase photocatalytic reaction of CH4 with H2O was performed at 150 ℃ in a fixed-bed annular reactor. The results show that the conversion of met hane and the selectivity of methanol reach to 5.1% and 87.3% respectively over MoO3-TiO2/SiO2, and MoO3-TiO2/SiO2 ex hibits higher photocatalytic acivity than ZnO-TiO2/SiO2.
Supported loaded semiconductors (MoO_3,ZnO)-TiO_2/SiO_2 were pre pared by an isovolumetric impregnation method from TiO_2/SiO_2 pre pared by chemical modification reaction. The chemisorption property and photon a bsorption ability of MoO_3-TiO_2/SiO_2 and ZnO-TiO_2/SiO_ 2 were investigated by BET, UV-Vis DRS, IR and TPD-MS techniques. The gas -phase photocatalytic reaction of CH_4 with H_2O was performed at 150 ℃ in a fixed-bed annular reactor. The results show that the conversion of met hane and the selectivity of methanol reach to 5.1% and 87.3% respectively over MoO_3-TiO_2/SiO_2, and MoO_3-TiO_2/SiO_2 ex hibits higher photocatalytic acivity than ZnO-TiO_2/SiO_2.
出处
《应用化学》
CAS
CSCD
北大核心
2005年第3期331-333,共3页
Chinese Journal of Applied Chemistry
基金
国家重大基础研究前期研究专项资助项目(2001CCAO3600).
