Aerobic oxidation of starch catalyzed by isopolyoxovanadate Na4Co(H2O)6V10O28

被引：21
作者：
Chen, Xiaoli [1 ]
Yan, Siqi [1 ]
Wang, Hang [1 ]
Hu, Zhiyun [1 ]
Wang, Xiaohong [1 ]
Huo, Mingxin [2 ]
机构：
[1] NE Normal Univ, Key Lab Polyoxometalate Sci, Minist Educ, Fac Chem, Changchun 130024, Jilin Province, Peoples R China
[2] NE Normal Univ, Sch Urban & Environm Sci, Changchun 130024, Peoples R China
来源：
CARBOHYDRATE POLYMERS | 2015年 / 117卷
基金：
中国国家自然科学基金;
关键词：
Aerobic oxidation; Starch; Isopolyoxovanadate; Catalysis; Carboxylic acid; OXIDIZED POTATO-STARCH; CALCIUM COMPLEXATION; SELECTIVE OXIDATION; CORN STARCHES; AIR OXIDATION; POLYSACCHARIDES; VANADIUM; AMYLOSE; OXYGEN;
D O I：
10.1016/j.carbpol.2014.10.066
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The partial oxidation of starch was achieved in the presence of oxygen with Na4Co(H2O)(6)V10O28 18H(2)O (abbreviated as CoV10) as catalyst. The oxidation degree of starch was determined by FT-IR, XRD and SEM measurements, which indicated that the aerobic oxidation of starch was promoted by oxidative catalyst CoV10. The application of CoV10 could give a high oxidation degree (DO) of 1.35 COOH/100 GU and 2.07 CO/100 GU with 86 wt.% yield of solid starch under mild reaction conditions (pH = 6; reaction time, 8 h; temperature, 50 degrees C; catalyst amount, 8 mg, when 1.5 g starch was used as substrate; atmospheric pressure). Among some vanadium compounds, CoV10 exhibited 4-fold activity higher than orthovanadate due to its coordination effect of cobalt and V10O28. Meanwhile, CoV10 could be recycled for six times with only a slight decrease in activity. Thus, CoV10/O-2 is one of the most efficient systems for partial oxidation of starch reported so far. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：673 / 680
页数：8
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