高等学校化学学报2018，Vol.39Issue(7)：1467-1474,8.DOI:10.7503/cjcu20180194
钾促进的Pt/TiO2催化一氧化碳氧化
Enhanced CO Oxidation Performance over Potassium-promoted Pt/TiO2 Catalysts
摘要
Abstract
We prepared TiO2 support by hydrothermal method and impregnated Pt and different amounts of alkali metal promotor potassium on the support to obtain the precursors.The K-Pt/TiO2 catalysts were prepared by hydrogenating and used for catalytic oxidation of CO.The catalyst with a potassium content of 0.3%(mass fraction)exhibited the best catalytic performance among all the catalysts.The results of X-ray photoelectron spectroscopy and oxygen storage complete capacity demonstrated that the alkali metal promotor K promoted the formation of oxygen vacancies and increased the amount of active oxygen species.A proper amount of potassium can lead to the increase of dispersion of Pt,and it can enhance the performance for catalytic oxidation of CO.关键词
一氧化碳氧化/碱金属助剂钾/氧空位/Pt的分散度Key words
CO oxidation/Alkali metal promoter K/Oxygen vacancy/Dispersion of Pt分类
化学化工引用本文复制引用
刘敬华,丁彤,田野,李新刚..钾促进的Pt/TiO2催化一氧化碳氧化[J].高等学校化学学报,2018,39(7):1467-1474,8.基金项目
国家自然科学基金(批准号:U1232118,21476159)资助.Supported by the National Natural Science Foundation of China(Nos.U1232118,21476159). （批准号:U1232118,21476159）
