Understanding catalyst preparation via electron microscopy for carbon dioxide conversion

通过电子显微镜了解二氧化碳转化催化剂的制备

• 批准号: 2878549
• 金额: --
• 依托单位: CARDIFF UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2878549
• 关键词: Understanding; catalyst; preparation; via; electron

Heterogeneous catalysis plays a hugely important role in the production of the world's chemical building blocks and is becoming increasingly important in the conversion of pollutants and greenhouse gases. The aim of this studentship is to better understand the processes used to prepare highly important heterogeneous catalysts for reactions such as the conversion of carbon dioxide to methanol. The student will use atomic-resolution electron microscopy to observe the formation of nanoparticle catalysts in-situ during calcination and reduction processes (i.e. while heating under gaseous conditions). The project will provide important insight into how catalytic nanoparticles form and enable the design of improved catalysts for a wide range of chemical reactions.The student will work within the internationally leading Cardiff Catalysis Institute, which has recently moved into a multimillion pound new building, the Translational Research Hub. The project will primarily use a new aberration-corrected Scanning Transmission Electron Microscope to image the structure of catalytic materials at atomic resolution (i.e. observing individual atoms). As part of the new microscope, we have holders that enable gaseous and liquid conditions within the microscope, enabling us to watch the formation of metal nanoparticles and how they change under reaction conditions.In this project, in-situ microscopy will be used to specifically monitor the alloying of metals and the formation of catalysts with excellent activity for the hydrogenation of carbon dioxide."

多相催化在世界化学原料的生产中发挥着极其重要的作用，并且在污染物和温室气体的转化中变得越来越重要。该学生奖学金的目的是更好地了解用于制备非常重要的多相催化剂的过程，这些催化剂用于二氧化碳转化为甲醇等反应。学生将使用原子分辨率电子显微镜观察煅烧和还原过程（即在气态条件下加热时）原位纳米颗粒催化剂的形成。该项目将提供关于催化纳米粒子如何形成的重要见解，并能够设计出适用于各种化学反应的改进催化剂。该学生将在国际领先的卡迪夫催化研究所工作，该研究所最近搬进了耗资数百万英镑的新大楼，转化研究中心。该项目将主要使用新型像差校正扫描透射电子显微镜以原子分辨率对催化材料的结构进行成像（即观察单个原子）。作为新型显微镜的一部分，我们的支架可以在显微镜内实现气体和液体条件，使我们能够观察金属纳米粒子的形成以及它们在反应条件下如何变化。在这个项目中，原位显微镜将用于专门监测金属的合金化以及具有优异的二氧化碳加氢活性的催化剂的形成。”