Dynamic Behavior of Chemical Reactors

化学反应器的动态行为

• 批准号: 9015853
• 负责人: John Hudson
• 金额: $ 25.05万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-04-01 至 1996-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9015853&HistoricalAwards=false
• 关键词: Dynamic; Behavior; Chemical; Reactors

Analyzing the chemical and physical processes occurring in chemical reactor dynamics has practical uses over and above the elucidation of fundamental phenomena. An understanding of these processes and being able to determine the controlling parameters is necessary for design and scaleup of industrial reactors. This research project is a continuation of the principal investigator's work on the unsteady state behavior of electrochemical reactors. Such systems are ideal for fundamental studies of reaction dynamics because they are relatively stationary (they have less drift over the time scale of the dynamics) and they exhibit many types of interesting dynamic behavior such as complex periodic oscillations, low order chaos, quasiperiodicity, etc. The parameters are easily controlled (potential or current, for example) so that transitions among states can be investigated. In this project several dynamic phenomena will be studied using electrochemical reactions. The studies will include surface patterns and the relationship of temporal and spatial behavior, transitions from low order chaos to more complex phenomena, coupled systems, and studies of bifurcation among states. The experimental work will involve electrodissolution of metals, electrodeposition, and electrocatalytic reactions. The results will be analyzed using methods from nonlinear dynamics (including neural networks) and will compare experimental data with model predictions.

分析化学反应器动力学中发生的化学和物理过程除了阐明基本现象外还具有实际用途。 了解这些过程并能够确定控制参数对于工业反应器的设计和放大是必要的。 该研究项目是主要研究者在电化学反应器非稳态行为方面工作的延续。 此类系统非常适合反应动力学的基础研究，因为它们相对静止（它们在动力学时间尺度上的漂移较小），并且表现出多种有趣的动态行为，例如复杂的周期性振荡、低阶混沌、准周期性等。参数易于控制（例如电势或电流），因此可以研究状态之间的转变。 在该项目中，将利用电化学反应研究几种动态现象。 这些研究将包括表面模式和时空行为的关系、从低阶混沌到更复杂现象的转变、耦合系统以及状态间分叉的研究。 实验工作将涉及金属的电溶解、电沉积和电催化反应。 将使用非线性动力学（包括神经网络）的方法对结果进行分析，并将实验数据与模型预测进行比较。