Understanding the Mechanochemical Synthesis of Mixed Oxi j1es using Synchrotron and Neutron Techniques

了解使用同步加速器和中子技术的混合氧化物的机械化学合成

• 批准号: 1795413
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1795413
• 关键词: Understanding; Mechanochemical; Synthesis; Mixed; Oxi

The mechanochemical synthesis of mixed oxides is of interest within JM as a potential new route to the manufacture of catalysts and absorbents. There are advantages from using this route such as reduced energy and simplified process flow sheets. However, the mechanism of the transformation of reagents to active phases under mechanical action is not well understood and knowledge of how key parameters such as milling technique, time, initial reagent ratios and the presence of additives is needed. Knowledge is required of which phases (amorphous and crystalline) form during milling time and how the process can be optimised. The project will use tomography, PDF, XAS, XRD, Raman neutron techniques to understand the mechanism of mechanochemical transformation with milling time and key parameters for oxides such as perovskites or molybdates. In situ techniques will also be developed.

混合氧化物的机械化学合成是JM的兴趣，作为一种潜在的新路线，以制造催化剂和吸收剂。使用该路线有许多优点，例如降低了能耗和简化了工艺流程。然而，在机械作用下试剂转化为活性相的机制还没有很好地理解，并且需要了解关键参数如研磨技术、时间、初始试剂比率和添加剂的存在。需要了解研磨过程中形成的相（非晶相和结晶相）以及如何优化工艺。该项目将使用层析成像，PDF，XAS，XRD，拉曼中子技术来了解机械化学转化机制与研磨时间和氧化物（如钙钛矿或钙钛矿）的关键参数。还将开发现场技术。