Abstract

The catalytic behavior of a porous particle containing a liquid-phase catalyst in its pores is investigated by the catalytic oxidation of ethylene (the Wacker-Hochst process). The activity of the catalyst is proved to be dependent upon the properties of the carrier materials, their sizes and the operating conditions. The experimental results are analyzed on the basis of measurement of the intrinsic kinetics and the effective diffusivity in the liquid-filled pores, and from these results the effectiveness factors of the catalysts are derived. A new technique to create a highly-dispersed state of catalyst solution inside the carrier materials and to eliminate the diffusion resistances is successfully established.

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