Kinetics Study for Ion-Exchange-Resin Catalyzed Hydrolysis of Diethyl Oxalate

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Abstract

The kinetics of diethyl oxalate hydrolysis in presence of ion-exchange resin was studied. The effects of the reaction conditions, such as catalyst loading, initial mole ratio of water to ester and the temperature on the hydrolysis reaction were investigated. It was found that Amberlyst-15 was an effective catalyst for the hydrolysis of diethyl oxalate. Moreover, diethyl oxalate hydrolysis involved two reactions in series, with monoethyl oxalate as an intermediate product. In the present work, a concentration-based kinetic model was proposed by considering the catalysis of both oxalic acid and ion-exchange resin based on the characteristics of the resin catalyzed reaction. The kinetic parameters were estimated from experimental data with regression analysis. The mean relative deviation value no more than 6% indicated that the model proposed was able to predict the hydrolysis reaction rates catalyzed by ion-exchange resin.

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	Articles by authors
	Xu Yan
	Yang Guangcun
	Li Zhenhua
	ZhaoYujun
	Ma Xinbin

Keywords： hydrolysis kinetics； diethyl oxalate； oxalic acid； monoethyl oxalate； ion-exchange resin

Received 2015-04-12;

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Xu Yan, Yang Guangcun, Li Zhenhua, ZhaoYujun, Ma Xinbin.Kinetics Study for Ion-Exchange-Resin Catalyzed Hydrolysis of Diethyl Oxalate[J] Chemcial Industry and Engineering, 2017,V34(1): 19-24

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