CATALYST DEVELOPMENT AND CHARACTERIZATION


Catalyst development Johnson Matthey

 

Catalyst preparation

Johnson Matthey uses a wide range of preparation methods (precipitation, adsorption, impregnation, coprecipitation) to produce catalysts tailored for specific processes. New catalysts are scaled-up on dedicated equipment, from gram to kilo and kilo to tonne quantities of catalyst.

A wide range of state-of-the-art development equipment is used to transform catalyst formulations into final products, including tableting presses, extruders, granulaters and spray dryers.

For catalyst finishing we have a comprehensive range of drying, calcination, reduction and passivation equipment (static, rotating, moving, fluidised bed) operated under a range of conditions.

 

Catalyst characterization

Johnson Matthey’s material characterization capabilities include:

  • N2 and Hg porosimetry providing pore volume, pore size distribution, average pore diameter, BET surface area
     
  • Full range of chemisorption techniques for measuring active metal surface areas (e.g. Ni, Co, Cu, Pd, Pt, Ru)
     
  • X-ray diffraction for measuring crystallite sizes and identification of the crystallite phases present
     
  • Scanning Electron Microscopy, Transmission Electron Microscopy
     
  • EPMA: Electron Probe Micro-Analysis
     
  • X-ray fluorescence, ICP, AAS and classical methods for catalyst composition
     
  • Infra Red and Raman spectroscopy, vibrational spectroscopic techniques for measurement of adsorbates on catalytic surfaces
     
  • X-ray Photoelectron Spectroscopy for measuring surface composition of catalysts
     
  • Ammonia and pyridine adsorption and desorption to determine Lewis and Bronsted acid sites
     
  • TGA, DSC, DTA, TPR analysis
     
  • Particle size analysis and sedimentation techniques
     
  • Full range of equipment for measuring strength and attrition of formed catalysts and powders