Complimentary Neutron & X-ray Total Scattering Study of Doped Ceria-Zirconia Nanocatalyst Material

In 2020, strict legislations will be introduced, further restricting the CO, NOx, and hydrocarbon gas emission for motorcycles (MCs). In this industrial postdoc project, Three-Way-Catalyst nanomaterials are developed and studied in close collaboration with the Danish industry for use in MC exhaust systems. The catalyst material is made up of Lanthanide (Ln3+) doped ceria-zirconia nanoparticles coated with Pd or Rh. For this beam time proposal, we are interested in knowing how the Ln dopants, which increase the material’s oxygen storage capacity as well as thermal stability, are incorporated into the structure. By utilizing the complementarity of neutron and x-ray scattering, the local geometry around the Ln dopants can be determined and related to the material properties, resulting in the development of novel nanocatalyst materials that comply with the strict 2020 legislations.2020年将出台严格法规，进一步限制摩托车（MCs）的一氧化碳（CO）、氮氧化物（NOₓ）及烃类气体排放。本工业博士后研究项目中，研究团队与丹麦工业界紧密合作，开发并研究了适用于摩托车排气系统的三元催化剂（Three-Way-Catalyst）纳米材料。该催化剂材料由负载钯（Pd）或铑（Rh）的镧系元素（Lanthanide, Ln³+）掺杂铈锆氧化物纳米颗粒构成。针对本次束流申请（beam time proposal），我们旨在探明可提升材料储氧能力（oxygen storage capacity）与热稳定性的Ln掺杂剂如何嵌入材料结构。通过利用中子与X射线散射（neutron and X-ray scattering）的互补特性，可确定Ln掺杂剂周围的局域几何结构，并将其与材料性能建立关联，最终开发出符合2020年严格排放标准的新型纳米催化剂材料。

搜集汇总

背景与挑战

背景概述

该数据集聚焦于开发用于摩托车尾气处理的三效催化剂纳米材料，以应对2020年更严格的排放法规。研究通过互补的中子与X射线总散射技术，分析镧系元素掺杂的铈锆氧化物纳米颗粒的局部结构，旨在揭示掺杂剂如何影响材料氧存储能力和热稳定性，从而优化催化剂性能。数据来自ISIS中子与μ子源的实验，包含原始散射数据，支持新型纳米催化剂材料的研发。