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Pattern formation during catalytic surface reactions at increased reaction pressures and imaging and prevention of meta-stable pitting corrosion of stainless steels in salt water.

在增加的反应压力下催化表面反应过程中的图案形成以及不锈钢在盐水中的亚稳态点蚀的成像和预防。

基本信息

批准号：
342186-2012
负责人：
Rotermund, Harm
金额：
$ 3.57万
依托单位：
Dalhousie University
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2014
资助国家：
加拿大
起止时间：
2014-01-01 至 2015-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=549608
关键词：
Pattern formation during catalytic surface

项目摘要

The Dalhousie Surface Reaction Imaging Group is providing innovative techniques to explore the complex nature of physical and chemical interactions on surfaces. We concentrate on understanding fundamental issues of catalytic and other surface reactions manifesting as self-organizing pattern forming phenomena. Insight into the chemical processes on solid surfaces will have great importance in developing better materials and exploiting their dynamic properties will foster our understanding for quite different systems like the stock market or biological rhythms and clocks. We focus attention on the carbon monoxide oxidation of Platinum to illuminate non-linear pattern formation dynamics, the study of deterministic yet unpredictable reactions. The beauty of this simple chemical system is it exemplifies the diverse phenomena of far more complex systems. A new avenue of research is to find what happens at higher pressures when the heat of the reaction begins to influence pattern evolution. Until now these reactions have only been investigated under constant temperature conditions. As the temperature becomes locally different, more complex behaviors will evolve. We are developing world unique imaging tools to observe surface reactions at higher pressure and temperature conditions than have previously been investigated.

达尔豪西表面反应成像组提供创新技术，以探索表面上物理和化学相互作用的复杂性质。我们专注于理解催化和其他表面反应表现为自组织模式形成现象的基本问题。深入了解固体表面上的化学过程对于开发更好的材料具有重要意义，利用它们的动态特性将促进我们对股票市场或生物节律和时钟等完全不同的系统的理解。我们把注意力集中在一氧化碳氧化铂照亮非线性图案形成动力学，研究确定性但不可预测的反应。这个简单的化学系统的美妙之处在于它简化了更复杂系统的各种现象。一个新的研究途径是发现在更高的压力下，当反应热开始影响图案演变时会发生什么。到目前为止，这些反应只在恒温条件下进行过研究。随着温度变得局部不同，将演变出更复杂的行为。我们正在开发世界上独特的成像工具，以观察在比以前研究的更高的压力和温度条件下的表面反应。