Oxidation of glyoxal to glyoxylic acid by oxygen over V_2O_5/C catalyst

作     者：Yu Lan Niu Zheng Xu Min Li Rui Feng Li 

作者机构：Key Laboratory of Coal Science and Technology MOE Institute of Special Chemicals Taiyuan University of TechnologyTaiyuan 030024 PR China Department of Chemical Engineering Taiyuan Institute of Technology Taiyuan 030008 PR China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2008年第19卷第2期

页      面：245-248页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：20051272 

主　　题：Glyoxal Glyoxylic acid Vanadium catalyst Oxidation 

摘      要：A novel vanadium oxide catalyst supported on active carbon was prepared by an incipient wetness impregnation method, and the precursor was obtained from oxalic acid aqueous solutions of NH4VO3. The catalyst was applied liquid phase oxidation of glyoxal to glyoxylic acid. It was found that V2O5/C catalyst exhibited obvious activity for glyoxal oxidation. Glyoxylic acid could be obtained without pH regulation during the reaction. By using this catalyst, the conversion of glyoxal and the yield of glyoxalic acid were 29.2% and 13.6%, respectively at 313 K and oxygen flow 0.1 L/rain after reaction for 10 h.