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Catalyst/Powder/Physical Property Testing (Catalyst Assessment)

Evaluation of Surface Composition and Properties

Suface composition
  • X-ray photoelectron spectroscopy (XPS)
  • Auger electron spectroscpoy (AES)
  • electron probe microanaylzer (EPMA)
  • scanning electron microscope-energy dispersive X-ray spectroscopy
  • transmission electron microscope-energy dispersive X-ray spectroscopy
Electronic state of surface atoms
  • X-ray photoelectron spectroscopy (XPS)
  • Auger electron spectroscpoy (AES)
Metal dispersion
  • H2 pulse chemisorption
  • CO pulse chemisorption
  • X-ray photoelectron spectroscopy (XPS)
  • transmission electron microscope-energy dispersive
  • X-ray diffraction
Adsorped species
  • infrared spectroscopy
  • temperature programmed desorption/ decomposition -mass spectrometry
Temperature programmed gas reactions
  • temperature programmed oxidation
  • temperature programmed reduction
in situ Analysis
  • infrared spectroscopy
Acidity and basicity of solid catalyss
  • temperature programmed desorption of ammonia
  • temperature programmed desorption of CO2
  • pyridine adsorption method with infrared spectroscopy
Surface area
  • BET single point method (N2 adsorption)
  • BET multi point method (N2 adsorption)
  • BET multi point method (Ar adsorption)
Pore size distribution
  • mercury porosimetry
  • adsorption and desorption isotherm s(N2)
Partilcle size and shape
  • scanning electron microscopy
  • tansmission electron microscopy
  • scanning transmission electron microscopy

Evaluation of Bulk Structure and Composition

Structural analysis
  • X-ray diffraction
  • infrared spectroscopy
  • Raman spectroscopy
Pore size disribution
  • mercury porosimeter
  • adsorption/desorption isotherms (N2)
Grain boundary structures
  • high-resolution transmission electron microscope
Elemental analysis
  • atomic absorption spectrometry
  • inductively coupled plasma-atomic emission spectroscopy
  • inductively coupled plasma-mass spectrometry
  • X -ray Fluorescence Analysis(XRF)
Attenuated total reflection FT-IR Attenuated total reflection FT-IR
Nitrogen adsorption in micropores Nitrogen adsorption in micropores
Mercury porosimetry Mercury porosimetry

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