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Title: The ReactorAFM: Non-contact atomic force microscope operating under high-pressure and high-temperature catalytic conditions

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.
Authors:
; ; ; ; ; ; ;  [1] ; ;  [2]
  1. Huygens-Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, RA Leiden 2300 (Netherlands)
  2. Leiden Probe Microscopy B.V., J.H. Oortweg 21, 2333 CH Leiden (Netherlands)
Publication Date:
OSTI Identifier:
22392415
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 3; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ATMOSPHERES; ATOMIC FORCE MICROSCOPY; CARBON MONOXIDE; CATALYSTS; IMAGES; MASS SPECTROSCOPY; NANOPARTICLES; OXIDATION; PALLADIUM; SAMPLE PREPARATION; TEMPERATURE RANGE 0400-1000 K