Particle-size Distribution Functions of Supported Catalysts

3 Characterization of the Bulk Properties of Catalysts Measurements of Particle-size Distribution Functions of Supported Catalysts - 

Pore masking is not always easy in an X-ray s.a.s. experiment because certain supports have such high electron densities that it is impossible to find a fluid which can match them.47 It is here that neutron s.a.s. can be particularly useful since it is relatively easy to find a suitable fluid with the same neutron scattering length density as a chosen catalyst support. 

A small-angle scattering curve from a system of particles can in general be described by the following equation 

One example of where neutron s.a.s. has been put to good use, is in the evaluation of the particle size distribution of dispersed NiO in a-Al203.48 

Somorjai, R. E. Powell, P. W. Montgomery, and G. Jura, in Small-angle X-ray Scattering , ed. H. Brumberger, Gordon Breach, New York, 1967, p. 449. 

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