How to test catalyst carrier and catalyst support
The composition and nature of catalyst support phases can be established by x-ray diffraction (XRD) and changes monitored. Catalyst support characteristics include composition, heterogeneity, crystal structure, crystallite size and crystallite shape. Surface area, pore volume and pore size distribution are fundamental characteristics of the catalyst architecture. They can be measured by nitrogen adsorption methods. These parameters are often particularly useful for comparison of batches and deterioration through loading of active ingredients or through blockages in use. Crystallite shape can be measured where this is likely to arise, e.g. zinc oxide or titanium oxide.