Richard M-I, Fernández S, Hofmann J P, Gao L, Chahine G A, Leake S J, Djazouli H, De Bortoli Y, Petit L, Boesecke P, Labat S, Hensen E J M, Thomas O, Schülli T
ID01/ESRF, 6 rue Jules Horowitz, BP220, F-38043 Grenoble Cedex, France.
Laboratory of Inorganic Materials Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlands.
Rev Sci Instrum. 2017 Sep;88(9):093902. doi: 10.1063/1.5000015.
A reactor cell for in situ studies of individual catalyst nanoparticles or surfaces by nano-focused (coherent) x-ray diffraction has been developed. Catalytic reactions can be studied in flow mode in a pressure range of 10-10 mbar and temperatures up to 900 °C. This instrument bridges the pressure and materials gap at the same time within one experimental setup. It allows us to probe in situ the structure (e.g., shape, size, strain, faceting, composition, and defects) of individual nanoparticles using a nano-focused x-ray beam. Here, the setup was used to observe strain and facet evolution of individual model Pt catalysts during in situ experiments. It can be used for heating other (non-catalytically active) nanoparticles (e.g., nanowires) in inert or reactive gas atmospheres or vacuum as well.
一种用于通过纳米聚焦（相干）X射线衍射对单个催化剂纳米颗粒或表面进行原位研究的反应池已被开发出来。催化反应可以在流动模式下，在10-10毫巴的压力范围和高达900°C的温度下进行研究。该仪器在一个实验装置中同时弥合了压力和材料差距。它使我们能够使用纳米聚焦X射线束原位探测单个纳米颗粒的结构（例如形状、尺寸、应变、晶面、组成和缺陷）。在这里，该装置被用于在原位实验中观察单个模型铂催化剂的应变和晶面演变。它也可用于在惰性或反应性气体气氛或真空中加热其他（非催化活性）纳米颗粒（例如纳米线）。
