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.
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