V_2O_5/C catalyst for liquid phase oxidation of glyoxal to glyoxylic acid

作     者：NIU YuLan1,2 & LI RuiFeng1 1 Key Laboratory of Coal Science and Technology, Ministry of Education, Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China 2 Department of Chemical Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China 

作者机构：Key Laboratory of Coal Science and Technology Ministry of Education Institute of Special Chemicals Taiyuan University of Technology Taiyuan China Department of Chemical Engineering Taiyuan Institute of Technology Taiyuan China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2009年第52卷第7期

页      面：1057-1062页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：Supported by the Technology Research and Development Project for University of Shanxi Province of China (Grant No. 20051272) 

主　　题：glyoxal glyoxylic acid V2O5/C catalyst 

摘      要：A study of the catalytic activity of V2O5/C catalyst for the oxygen oxidation of glyoxal has been made, showing that glyoxylic acid can be formed without control of pH value and there is little oxalic acid from the excessive oxidation of glyoxylic acid. The studies of XRD and TEM have shown that V2O5 diffraction peaks gradually strengthen with the increase of the content of V2O5. With the content of 3% V2O5 and the calcination temperature of 573 K, V2O5/C catalyst displayed the best activity and selectivity. The conversion of glyoxal and the selectivity of glyoxylic acid reached 18.76% and 77.70% after 5 h, respectively. Moreover, V2O5/C catalyst showed small deactivation after recycling three times, which indicates that V2O5/C has a higher stability than noble metal catalysts in the reaction medium.