Roobol S B, Cañas-Ventura M E, Bergman M, van Spronsen M A, Onderwaater W G, van der Tuijn P C, Koehler R, Ofitserov A, van Baarle G J C, Frenken J W M
Huygens-Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, RA Leiden 2300, The Netherlands.
Leiden Probe Microscopy B.V., J.H. Oortweg 21, 2333 CH Leiden, The Netherlands.
Rev Sci Instrum. 2015 Mar;86(3):033706. doi: 10.1063/1.4916194.
An Atomic Force Microscope (AFM) has been integrated in a miniature high-pressure flow reactor for in-situ observations of heterogeneous catalytic reactions under conditions similar to those of industrial processes. The AFM can image model catalysts such as those consisting of metal nanoparticles on flat oxide supports in a gas atmosphere up to 6 bar and at a temperature up to 600 K, while the catalytic activity can be measured using mass spectrometry. The high-pressure reactor is placed inside an Ultrahigh Vacuum (UHV) system to supplement it with standard UHV sample preparation and characterization techniques. To demonstrate that this instrument successfully bridges both the pressure gap and the materials gap, images have been recorded of supported palladium nanoparticles catalyzing the oxidation of carbon monoxide under high-pressure, high-temperature conditions.
原子力显微镜（AFM）已被集成到一个微型高压流动反应器中，用于在类似于工业过程的条件下对多相催化反应进行原位观察。AFM可以对模型催化剂成像，例如在高达6巴的气体气氛和高达600 K的温度下，由扁平氧化物载体上的金属纳米颗粒组成的催化剂，同时可以使用质谱法测量催化活性。高压反应器放置在超高真空（UHV）系统内，以补充标准的UHV样品制备和表征技术。为了证明该仪器成功地弥合了压力差距和材料差距，已记录了在高压、高温条件下负载钯纳米颗粒催化一氧化碳氧化的图像。
