应用化学2016，Vol.33Issue(11)：1295-1302,8.DOI:10.11944/j.issn.1000-0518.2016.11.160022
五氧化二钒／铈改性二氧化钛催化甲醇高选择性氧化制备二甲氧基甲烷
Oxidation of Methanol to Dimethoxymethane over Vanadium Pentoxide/Cerium-Titanium Dioxide with High Selectivity
摘要
Abstract
The composite Ce-TiO2 support was prepared through solvothermal treament of Ce( NO3 ) 3 and butyl titanate .A series of V2 O5/Ce-TiO2 catalysts with different vanadium loadings were obtained by incipient impregnation with ammonium metavanadate solution .The catalytic properties of V2 O5/Ce-TiO2 for selective oxidation of methanol to dimethoxymethane ( DMM ) were investigated .The V2 O5/Ce-TiO2 catalysts were characterized by XRD, UV-Vis, H2-TPR, and NH3-TPD.The results show that the dispersion of vanadium species is improved on the surface of Ce modified TiO 2 .The interaction between vanadium species and supports is changed .The reduction temperature increases with the increasing Ce content .The Ce content in modified TiO2 does not affect the acidity of the V2 O5 supported catalysts , but the acidity of the catalysts decreases with the increasing of V2 O5 content.For the catalyst of 10V/1Ce-TiO2 ( The numbers 10 and 1 represent the mass percentage of V2 O5 in the catalyst and molar ratio of Ce and TiO 2 , respectively ) , the methanol conversion and DMM selectivity reach 39.6% and 99.9%, respectively , at 160 ℃.关键词
铈改性二氧化钛/五氧化二钒/甲醇氧化/二甲氧基甲烷Key words
cerium modified titanium dioxide/vanadium pentoxide/methanol oxidation/dimethoxymethane分类
化学化工引用本文复制引用
钱建华,董清华,李君华,刘琳,邢锦娟..五氧化二钒／铈改性二氧化钛催化甲醇高选择性氧化制备二甲氧基甲烷[J].应用化学,2016,33(11):1295-1302,8.基金项目
辽宁省教育厅第三批特聘教授支持计划（2014-323）；辽宁省教育厅创新团队项目（LT2015T001）Supported by the Third Distinguished Professor of the Education Department of Liaoning Province （ No．2014-323）， Innovation Team Project in Liaoning Province Department of Education （）
