In-situ spectroscopic investigations of Fischer-Tropsch catalysts

费托催化剂的原位光谱研究

• 批准号: 2485151
• 金额: --
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2485151
• 关键词: situ; spectroscopic; investigations; Fischer; Tropsch

ObjectivesThis project aims to gain new insight into the mechanisms of operation of Manganese-promoted cobalt oxide catalysts for the Fischer-Tropsch (FT) reaction by using Near-Ambient Pressure X-Ray Photoelectron Spectroscopy (NAP-XPS surface sensitive spectroscopic technique) to study the surface chemistry of the catalyst in-situ. In particular, manganese doping has been shown to be benefical to the catalyst's activity and selectivity, but it is not well understood whyThe objectives are:Develop methodology to be able to study real commercial FT catalysts using Near-Ambient Pressure XPSInvestigate the effect of manganese doping on the reduction of the catalystInvestigate the evolution of the surface chemistry of the reduced catalyst in response to water exposurePerform the Fischer-Tropsch reaction in-situ in NAP-XPS to elucidate the nature of the active phaseApproachThe student will employ NAP-XPS to study catalyst samples supplied by BP. To complement our understanding of these materials, the student may also develop simpler model catalysts based on foils and/or evaporated thin films. Other complementary characterization may include but not be limited to: catalytic testing, Infrared Spectroscopy and Raman SpectroscopyNovel science contentTechnique development Mechanistic understanding of heterogeneous catalysts in general lags far behind materials discovery, meaning that most catalysts are discovered by trial-and-error. By studying the surface chemistry of catalysts in-situ, we can gain fundamental understanding of how they work which will allow the rational design of new catalysts. Developing NAP-XPS methodology to study catalysts in-situ is a vital component of this and could be broadly applicable to diverse catalytic systemsUnderstanding the Fischer-Tropsch processThe FT process converts a feedstock of carbon monoxide and hydrogen into synthetic fossil fuels (gasoline, diesel and kerosene). It is an attractive proposition in light of the need to reduce carbon emissions as the feedstock can come from renewable sources such as biomass or municipal solid waste - potentially enabling "green" fossil fuels. Improving the selectivity, stability and activity of FT catalysts via understanding in detail how they work could hold the key to the widespread adoption of FT as a technology.

Objectivesthis项目旨在通过使用近气压X射线X射线光电镜（NAP-XPS表面敏感的光谱技术）研究表面化学化学效果核能化学效果效果，旨在研究Fischer-Tropsch（FT）反应的锰促进的氧化钴催化剂（FT）反应的操作机制的新见解。特别是，锰掺杂已被证明是促进催化剂的活动和选择性的福祉，但尚不清楚目的是：开发方法，能够使用近气压xpsInvests xpsinsvests来研究真正的商业ft催化剂，从而可以利用锰掺杂量减少催化剂的效果，从而降低了对催化剂的效果的影响。 fischer-tropsch在NAP-XPS中的原位反应，以阐明活跃的phasephighthe学生将使用NAP-XPS研究BP提供的催化剂样品。为了补充我们对这些材料的理解，学生还可以根据箔和/或蒸发的薄膜开发更简单的模型催化剂。其他互补的特征可能包括但不限于：催化测试，红外光谱和拉曼光谱科学科学内容技术技术发展的发展机械理解对远远落后于材料发现的异质催化剂的机械理解，这意味着大多数催化剂都被试用和ERROR发现。通过研究原位催化剂的表面化学，我们可以对它们的工作方式获得基本的了解，从而使新催化剂的合理设计。开发NAP-XPS方法来研究催化剂原位是其中的重要组成部分，并且可以广泛地适用于多样化的催化系统无法理解Fischer-Tropsch Process The FT过程将FT过程转换为一氧化碳和氢气的原料，使其成为合成化石（汽油，Diesel，Diesel））。鉴于需要减少碳排放的需求，这是一个有吸引力的主张，因为原料可能来自可再生能源，例如生物质或市政固体废物 - 潜在地启用了“绿色”化石燃料。通过详细了解它们的工作方式，可以提高FT催化剂的选择性，稳定性和活动，这可以使FT广泛采用作为技术的关键。