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Citation: LIAO De-Zhong, MAO Li-Xin, HE Jie-Yu. Synthesis of Di-isoamyl Oxalate Catalyzed by Zinc Sulfate[J]. Chinese Journal of Applied Chemistry, ;2004, 21(6): 644-645. shu

Synthesis of Di-isoamyl Oxalate Catalyzed by Zinc Sulfate

1.
Department of Chemical Engineering, Hu'nan Institute of Science and Technology, Yueyang 414000

Corresponding author: LIAO De-Zhong,
Received Date: 31 October 2003
Available Online: 8 February 2004

The infrared spectrum of pyridine adsorbed on surface of ZnSO₄·7H₂O indicates it exhibits Lewis acid centers as a catalyst. Experiments showed that it had good catalytic performance in esterification of oxalic acid with iso-amyl alcohol with ester yield being 97.5% in following conditions:the molar ratio of isoamyl alcohol to oxalic acid 2.8, catalyst amount 7.4%(based on the mass of oxalic acid), reaction temperature 145℃, reaction time 1.5 h. The catalyst could be used repeatedly for six times.
- zinc sulfate,
- di-isoamyl oxalate,
- esterification,
- catalytic activity
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