Hydrolysis kinetics and mechanism of adipamide in high temperature water

Pei-Gao Duan; Shuang Li; Zhi-Zhong Wang

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Hydrolysis kinetics and mechanism of adipamide in high temperature water

机译：己二酰二胺的水解动力学和机理高温水

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Adipamide (ADAM) served as a model to investigate the hydrolysis kinetics and mechanism of diamides in high temperature water. The major reaction products resulting from the hydrolysis of ADAM, primarily including adipamic acid and adipic acid, were detected. Effects of temperature, time, pressure, and pH on ADAM hydrolysis reaction kinetics have been investigated. The hydrolysis reaction is first order in ADAM at the temperature ranges investigated. The conversion is pH dependent, and three distinct regions of pH dependence exist. At low and high pH, the conversion increased rapidly with added acid and base, respectively. At near-neutral pH, however, the rate was essentially insensitive to changes in pH. The high content of adipamic acid in the reaction products at the initial hydrolysis reaction stage suggested that only one amide group was attacked at one time and then followed by transformation to a carboxyl. The reaction rate constants, average apparent activation energy and pre-exponential factor were evaluated according to the Arrhenius equation. Based on the experimental results, hydrolysis reaction scheme and mechanism were proposed.

机译：己二酰二胺(亚当)作为模型进行调查根据具体的水解动力学和机理在高温水中。亚当的水解,产生的产品主要包括adipamic酸和己二酸,被检测到。在亚当水解时间、压力和pH值反应动力学进行了研究。水解反应是一级反应在亚当温度范围调查。pH值依赖,pH值的三个不同的地区依赖的存在。转换迅速增加与酸和补充道基地,分别。率的变化是不敏感在博士adipamic酸的含量高产品在最初的水解反应认为只有一个酰胺反应阶段组被攻击一次,然后执行通过转换到一个羧基。速率常数、平均明显激活能源和pre-exponential因素进行评估根据阿伦尼乌斯方程。实验结果,水解反应计划提出了与机制。

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《Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers》 |2010年第8期|1067-1072|共6页
作者
Pei-Gao Duan; Shuang Li; Zhi-Zhong Wang;
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作者单位

Shanghai Key Laboratory of Green Chemistry and Green Process, Department of Chemistry, East China Normal University, No. 3663 North Zhongshan Road, Shanghai 200062, PR China;

Chemical Engineering Department, University of Michigan, 3074 H.H. Dow Building, 2300 Hayward St., Ann Arbor, MI 48109-2136, USA;

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正文语种英语
中图分类国际共产主义运动;
关键词
PH; hydrolysis kinetics; Adipic AcidsTEMPERATURE RANGEPh dependencereaction rate constantsWater temperaturehydrolysisKineticsAmide groupreaction products;

机译：PH值;水解动力学;己二AcidsTEMPERATURERANGEPh dependencereaction率constantsWatertemperaturehydrolysisKineticsAmide groupreaction产品;

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Hydrolysis kinetics and mechanism of adipamide in high temperature water

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