石油化工Issue(10)：1199-1204,6.
硫酸改性V2O5/TiO2催化剂上甲醇选择性氧化制二甲氧基甲烷
One-Step Oxidation of Methanol to Dimethoxymethane over H2SO4 Modified V2O5/TiO2 Catalysts
摘要
Abstract
V2O5/TiO2 catalysts were prepared through impregnation and then were modified by treating with H2SO4 to prepare HS-V2O5/TiO2(HS:H2SO4) catalysts. The two kinds of catalysts were characterized by means of H2-TPR,NH3-TPD, XRD and UV-Vis DRS. Their catalytic activities for the selective oxidation of methanol to dimethoxymethane(DMM) were investigated. The influences of the H2SO4 modification on the redox and acidic properties,and catalytic performance of the catalysts were studied. The results showed that,after the H2SO4 modification,the dispersity and redox property of the vanadium species not changed but the acidity was greatly improved. For HS-V2O5/TiO2 modified with appropriate amount of H2SO4,the methanol conversion and DMM selectivity were significantly promoted. Under the conditions of molar ratio of methanol to oxygen in feed 2,LHSV 1 200 h-1, normal pressure,150℃,HS-V2O5/TiO2 with SO42-loading 10%(w) and V2O5 loading 10%(w) as the catalyst,the methanol conversion and DMM selectivity reached 70.52% and 91.92%,respectively.关键词
钒钛催化剂/硫酸改性/甲醇选择性氧化/二甲氧基甲烷Key words
vanadium-titanium catalyst/sulfuric acid modification/selective oxidation of methanol/dimethoxymethane分类
化学化工引用本文复制引用
钱建华,董清华,李君华..硫酸改性V2O5/TiO2催化剂上甲醇选择性氧化制二甲氧基甲烷[J].石油化工,2015,(10):1199-1204,6.基金项目
辽宁省教育厅第三批特聘教授支持计划项目（2014-323）；辽宁省教育厅创新团队项目（LT2015001）。 （）
