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首页> 外文期刊>Macromolecular reaction engineering >The Consumption of Oxygen and p-Methoxyphenol in Acrylic Acid - Kinetics and Modeling
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The Consumption of Oxygen and p-Methoxyphenol in Acrylic Acid - Kinetics and Modeling

机译：丙烯酸中氧和对甲氧基苯酚的消耗-动力学和建模

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摘要

For a safe storage and handling of acrylic acid (AA), a lot of knowledge is necessary. In the present work, investigations were made in order to describe the stabilization processes during the inhibition period (IP) of AA more exactly. The oxygen and p-methoxyphenol consumption was determined for AA at 70 and 80 ℃ in an enhanced parameter range and simulated with a kinetic model, using the software Presto Kinetics (R). In the simulation accelerated stabilizer consumptions at 80 ℃ could be confirmed. The known stabilization mechanism must be enhanced with autocatalytic steps, which lead to an accelerated stabilizer consumption. Furthermore, the stability of AA was examined as a function of the dissolved oxygen mass fraction and the temperature in isoperibolic reactors. The IP follows an Arrhenius behavior; therefore, an extrapolation from higher reaction temperatures to storage conditions is possible. These measurements also confirm the nonlinear stabilizer consumption during the IP at temperatures over 75 ℃.
机译：为了安全地存储和处理丙烯酸（AA），需要很多知识。在目前的工作中，进行了研究以更准确地描述AA抑制期（IP）期间的稳定过程。使用Presto Kinetics（R）软件在70和80℃下在增强的参数范围内测定AA的氧和对甲氧基苯酚消耗量，并通过动力学模型进行模拟。在模拟中，可以确定80℃时稳定剂的加速消耗。必须通过自动催化步骤来增强已知的稳定机制，这会加速稳定剂的消耗。此外，检查了AA的稳定性，该溶解度是异代谢反应器中溶解氧质量分数和温度的函数。 IP遵循Arrhenius行为；因此，可以从较高的反应温度外推至储存条件。这些测量结果也证实了在IP超过75℃的温度下非线性稳定剂的消耗。

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  • 来源
    《Macromolecular reaction engineering》 |2011年第6期|p.212-222|共11页
  • 作者

    Raphael H. Brand; A. Hartwig; B. Opitz; C. Pfeifer; A. Drochner; G. Herbert Vogel;

  • 作者单位

    Ernst-Berl-lnstitut -fuer Technische und Makromolekulare Chemie,Technische Universitaet Darmstadt, Petersenstr. 20, D-64287Darmstadt, Germany;

    Ernst-Berl-lnstitut -fuer Technische und Makromolekulare Chemie,Technische Universitaet Darmstadt, Petersenstr. 20, D-64287Darmstadt, Germany;

    Ernst-Berl-lnstitut -fuer Technische und Makromolekulare Chemie,Technische Universitaet Darmstadt, Petersenstr. 20, D-64287Darmstadt, Germany;

    Ernst-Berl-lnstitut -fuer Technische und Makromolekulare Chemie,Technische Universitaet Darmstadt, Petersenstr. 20, D-64287Darmstadt, Germany;

    Ernst-Berl-lnstitut -fuer Technische und Makromolekulare Chemie,Technische Universitaet Darmstadt, Petersenstr. 20, D-64287Darmstadt, Germany;

    Ernst-Berl-lnstitut -fuer Technische und Makromolekulare Chemie,Technische Universitaet Darmstadt, Petersenstr. 20, D-64287Darmstadt, Germany;

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