Micro- and nano-patterned electrodes for the study and control of spillover processes in catalysis

用于研究和控制催化溢出过程的微米和纳米图案电极

• 批准号: EP/G025649/1
• 负责人: Ian Metcalfe
• 金额: $ 60.17万
• 依托单位: Newcastle University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FG025649%2F1
• 关键词: Micro; nano; patterned; electrodes; study

An exciting opportunity exists to exploit recent advances in techniques used in the micro- and nano- fabrication of semiconductor devices to fabricate and evaluate families of model catalysts. Such technologies can, in principle, be used to control the spatial arrangement of components on, e.g., a catalyst surface. We intend to employ such techniques for the preparation of micro- and nano-structured model supported-metal catalyst structures with metal features varying by more than three orders of magnitude (from approximately 100 nm to 1 mm in lengthscale). This proposal is motivated by the need to study the catalyst-support boundary and its role in heterogeneous catalysis if we are ever to improve our understanding of heterogeneous catalytic systems under real 'high pressure' operating conditions (crucially, although it is acknowledged that this interface can critically influence catalyst performance, there is a lack of ways to study its role). In order to be able to probe the interfacial region between support and catalyst electrochemically we will work with structured catalysts in the form of continuous electrodes deposited on an oxide solid-electrolyte support and compare the behaviour in such systems with similar model catalysts supported on more complex supports, but of greater practical interest, such as titania. We will focus on noble metals supported on oxides; such catalyst systems being widely employed industrially and there being evidence that the activity of such catalysts can be influenced by spillover processes as a result of 'electrochemical promotion'. The project brings together an outstanding team of scientists and engineers that is ideally suited to address the work which we anticipate will influence the way we view heterogeneous catalysis in the future.

一个令人兴奋的机会存在，利用在半导体器件的微米和纳米制造中使用的技术的最新进展，以制造和评估模型催化剂的家庭。原则上，这种技术可以用于控制组件的空间布置，例如，催化剂表面。我们打算采用这样的技术来制备微米和纳米结构的模型纳米金属催化剂结构，其金属特征变化超过三个数量级（长度范围从约100 nm到1 mm）。如果我们要提高对在真实的“高压”操作条件下的多相催化体系的理解，则需要研究催化剂-载体边界及其在多相催化中的作用，这一提议是出于这一需要（至关重要的是，尽管人们承认该界面可以严重影响催化剂性能，但缺乏研究其作用的方法）。为了能够探测支持和催化剂之间的界面区域电化学，我们将与结构化的催化剂的形式的连续电极沉积在氧化物固体电解质支持和比较的行为，在这样的系统与类似的模型催化剂支持在更复杂的支持，但更大的实际利益，如二氧化钛。我们将集中在贵金属的氧化物支持，这种催化剂系统被广泛采用的工业和有证据表明，这种催化剂的活性可以影响溢出过程作为一个结果的“电化学促进”。该项目汇集了一个优秀的科学家和工程师团队，非常适合解决我们预期将影响我们未来看待多相催化的方式的工作。

项目成果

Role of the Three-Phase Boundary of the Platinum-Support Interface in Catalysis: A Model Catalyst Kinetic Study.

铂 - 支持界面的三相边界在催化中的作用：模型催化剂动力学研究。

• DOI: 10.1021/acscatal.6b00829
• 发表时间: 2016-09-02
• 期刊: ACS CATALYSIS
• 影响因子: 12.9
• 作者: Papaioannou, Evangelos I.;Bachmann, Christoph;Neumeier, Jonas J.;Frankel, Daniel;Over, Herbert;Janek, Juergen;Metcalfe, Ian S.
• 通讯作者: Metcalfe, Ian S.

The role of sodium surface species on electrochemical promotion of catalysis in a Pt/YSZ system: The case of ethylene oxidation

• DOI: 10.1016/j.jcat.2013.03.015
• 发表时间: 2013-07
• 期刊: Journal of Catalysis
• 影响因子: 7.3
• 作者: N. Ibrahim;D. Poulidi;I. Metcalfe

Application of a cw quantum cascade laser CO2 analyser to catalytic oxidation reaction monitoring

连续量子级联激光CO2分析仪在催化氧化反应监测中的应用

• DOI: 10.1007/s00340-012-5154-y
• 发表时间: 2012
• 期刊: Applied Physics B
• 作者: Kasyutich V