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《Fine Chemicals》 2012-05
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Preparation of Diglycolic Acid via Oxidation of Diethylene Glycol with Molecular Oxygen

ZHANG Yan-yan,LIANG Zheng-yong,ZHANG Ya-dong (School of Chemical Engineering and Energy,Zhengzhou University,Zhengzhou 450001,Henan,China)  
Diglycolic acid was synthesized by the reaction of diethylene glycol and oxygen under heterogeneous conditions using water as solvent and Bi-Pt/C as catalyst.The structure of the product was confirmed by IR,1HNMR spectra,etc.The effects of temperature,volumes of solvents,amount of catalysts,amount of oxygen and reaction time on the reaction were studied.The optimum conditions were found as follows:reaction temperature 80 ℃,reaction time 8 h,mass ratio of substrate to catalyst 30,volume ratio of water to substrate 30,oxygen flow 40 mL/min.Under these conditions,the average yield of diglycolic acid was 95.0%.The catalyst activity did not show any significant decrease after six recycles.
【CateGory Index】: TQ225
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 LI Jun,WU Mei-ling(The Research Institute of SINOPEC CO.,LTD.Tianjin Branch,Tianjin 300271,China);Advances in the Comprehensive Utilization of Diethylene Glycol[J];Guangzhou Chemical Industry;2009-05
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【Co-citations】
Chinese Journal Full-text Database 2 Hits
1 LIANG Dan1, CUI Shiyu2, GAO Jing1, WANG Junhua1, CHEN Ping1, HOU Zhaoyin1, 1Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, Zhejiang, China 2Department of Chemical Engineering, Shandong College of Chemical Technicians, Tengzhou 277500, Shandong, China;Glycerol Oxidation with Oxygen over Bimetallic Pt-Bi Catalysts under Atmospheric Pressure[J];Chinese Journal of Catalysis;2011-12
2 ZHANG Mengyuan1,LIANG Dan1,NIE Renfeng1,LU Xiuyang2,CHEN Ping1,HOU Zhaoyin1,* 1Institute of Catalysis,Department of Chemistry,Zhejiang University,Hangzhou 310028,Zhejiang,China 2Department of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China;Oxidation of Biodiesel Glycerol over Pt Supported on Different Sized Carbon Supports in Base-Free Solution[J];Chinese Journal of Catalysis;2012-08
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Chinese Journal Full-text Database 10 Hits
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